CN217786897U - Methane telemeter - Google Patents

Abstract

The utility model provides a methane telemeter, which comprises a shell, an end cover, a light-passing plate, a pressure ring, a first sealing ring and a second sealing ring, wherein the shell is used for accommodating a detector and is provided with a mounting port and a detection port; the end cover is used for sealing the mounting opening; the first sealing ring is sleeved outside the insert ring and used for sealing the joint of the cover plate and the mounting opening; the light-transmitting plate is arranged in the shell and used for sealing the detection port; the second sealing ring is arranged between the light-transmitting plate and the shell and used for sealing the joint of the light-transmitting plate and the shell; the clamping ring is arranged in the shell and is abutted against the light-transmitting plate, and the clamping ring is used for fixing the light-transmitting plate in the shell. The utility model discloses a second sealing washer seals the faying face of light-passing board and casing, seals the faying face of apron and casing through first sealing washer. So set up for the inside confined explosion-proof chamber that forms of casing can completely cut off the contact path of detector and outside air, even if near take place methane and reveal also can not contact with the detector, guarantee product safe in utilization.

Description

Methane telemeter

Technical Field

The utility model belongs to the technical field of the methane detects, concretely relates to methane telemeter.

Background

Methane is also called as gas and is the main component of natural gas, methane, oil field and coal mine pit gas, etc., and is a colorless and tasteless gas which is easily exploded after being mixed with air according to a proper proportion. While methane or one of the greenhouse gases, both from a safety and from an environmental point of view, real-time monitoring of locations where methane may be present is of vital importance.

The methane telemetering is based on a spectrum absorption principle, a telemeter emits laser beams with specific wavelengths to a detection area, if methane gas exists in the area, the laser beams can be absorbed after passing through the area, the higher the gas concentration is, the larger the absorption amount is, the telemeter detects the change of the laser intensity and feeds the change back to a single chip microcomputer control circuit for processing, and the detection result can be displayed through a display screen or an alarm device subsequently.

The inside detector of methane telemeter and methane direct contact explode easily, consequently need ensure when detecting that the detector does not contact with methane direct contact, but to special places such as pipeline transport, natural gas station, methane concentration is higher, very easily leaks moreover, if the sealing performance of methane telemeter is not up to standard, very easily makes the methane of leaking get into inside the methane telemeter, exists the explosion risk.

SUMMERY OF THE UTILITY MODEL

The utility model provides a methane telemeter aims at solving current methane telemeter sealing performance poor, the problem of the accident that explodes easily when methane leaks.

In order to achieve the above object, the utility model adopts the following technical scheme: the methane telemeter comprises a shell, an end cover, a light-transmitting plate, a pressure ring, a first sealing ring and a second sealing ring, wherein the shell is used for accommodating a detector, and two opposite ends of the shell are respectively provided with a mounting port and a detection port; the end cover is arranged at the mounting opening and comprises a cover plate and an insert ring arranged on the cover plate, the insert ring is in inserted fit with the shell, and the cover plate is used for sealing the mounting opening; the first sealing ring is sleeved outside the insert ring and used for sealing the joint of the cover plate and the mounting opening; the light-transmitting plate is arranged in the shell and used for sealing the detection port; the second sealing ring is arranged between the light-transmitting plate and the shell and used for sealing the joint of the light-transmitting plate and the shell; and the press ring is arranged in the shell, is abutted against the light-transmitting plate and is used for fixing the light-transmitting plate in the shell.

In a possible implementation manner, a first mounting hole is formed in the shell, a second mounting hole corresponding to the first mounting hole is formed in the pressure ring, and the methane telemeter further comprises a first fastener in threaded connection with the first mounting hole and the second mounting hole respectively.

In a possible implementation manner, a threaded hole is formed in the shell, and the pressure ring is in threaded connection with the threaded hole.

In a possible implementation manner, a second limiting groove used for containing the second sealing ring and the light-transmitting plate is formed in the shell, and the second sealing ring and the light-transmitting plate are embedded in the second limiting groove.

In a possible implementation, the methane telemeter further comprises a first support arranged in the casing, the first support comprises a fixing plate and a mounting plate, the fixing plate and the mounting plate are arranged at included angles, the fixing plate is connected with the end cover, the mounting plate is arranged along the axial direction of the casing, and the detector is arranged on the mounting plate.

In a possible implementation manner, the cover plate is further provided with a fixing column, the fixing plate is provided with a first fixing hole, the fixing column penetrates through the first fixing hole, and a penetrating end of the fixing column is in threaded connection with a locking nut.

In one possible implementation, the detector includes an electrical component and an optical component disposed axially along the housing, and an emission end of the optical component faces the detection port.

In one possible implementation, the methane telemeter further includes a second bracket for fixing the electrical component, the second bracket being connected to the first bracket, and the electrical component includes: the circuit boards are sequentially arranged along a first direction, and the first direction is perpendicular to the axis of the shell; and the support columns are used for connecting two adjacent circuit boards, so that a heat dissipation space is formed between the two adjacent circuit boards.

In a possible implementation manner, the circuit board is provided with a jack, the pillar comprises a supporting portion and a connecting portion in plug-in fit with the jack, a connecting hole for accommodating the connecting portion is formed in the end face of the supporting portion, and the supporting portion is abutted to the adjacent circuit board to form the heat dissipation space.

In a possible implementation manner, a first limiting groove is formed in the housing, and the first sealing ring is accommodated in the first limiting groove.

Compared with the prior art, the utility model discloses the both ends of well casing form respectively and detect mouth and installing port, and when assembling, parts such as second sealing washer, light-passing board and detector pack into the casing through the installing port in, and end cover and first sealing washer are used for sealing the installing port. The light-transmitting plate cover is arranged at the detection port, the joint surface of the light-transmitting plate and the shell is sealed through the second sealing ring, and the light-transmitting plate is fixed through the pressing ring. The end cover is arranged at the mounting opening, is in inserting fit with the shell through the inserting ring, and seals the joint surface of the cover plate and the shell through the first sealing ring. So set up for the inside confined explosion-proof chamber that forms of casing can completely cut off the contact of detector and outside air, even if near take place methane and reveal also can not contact with the detector, can guarantee the security of product use, has stopped the emergence of explosion accident.

Drawings

FIG. 1 is a schematic view of a three-dimensional structure of a methane telemeter according to an embodiment of the present invention;

FIG. 2 is an exploded view of an end cap of a methane telemeter according to an embodiment of the present invention;

FIG. 3 is a cross-sectional view of an exploded view of a methane telemeter according to an embodiment of the present invention;

FIG. 4 is an enlarged view of a portion A of FIG. 3;

FIG. 5 is an internal cross-sectional view of a methane telemeter according to an embodiment of the present invention;

FIG. 6 is a schematic view of an end cap, a first bracket and a detector of a methane telemeter according to an embodiment of the present invention;

fig. 7 is the utility model discloses an installation schematic diagram of first support of methane telemeter and detector.

Description of reference numerals:

1. a methane telemeter;

10. a housing; 11. an installation port; 12. a detection port; 13. a second limit groove; 14. a first limit groove; 15. a first connecting plate;

20. a light-transmitting plate;

30. pressing a ring; 31. a first fastener;

40. a first bracket; 41. a fixing plate; 42. mounting a plate; 421. turning the folded plate;

50. an electrical component; 51. a second bracket; 52. a pillar; 53. a circuit board; 54. a second fastener;

60. an optical component; 61. laser emitting terminal

70. An end cap; 71. fixing a column; 72. locking the nut; 73. a third fastener; 74. a second connecting plate; 75. inserting a ring;

80. a second seal ring;

90. a first seal ring.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to," "secured to," or "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When an element is referred to as being "disposed on," "disposed on" another element, it can be directly on the other element or intervening elements may also be present. "plurality" means two or more. "at least one" refers to one or more quantities. "a number" means one or more than one.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

Referring to fig. 1 to 7, a methane telemeter 1 according to an embodiment of the present invention will be described.

Referring to fig. 1 to 5, an embodiment of the present invention provides a methane telemeter 1, which includes a housing 10, an end cover 70, a first sealing ring 90, a second sealing ring 80, a light-transmitting plate 20, and a pressure ring 20. The shell 10 is used for accommodating the detector, and the two opposite ends of the shell 10 are respectively provided with a mounting port 11 and a detection port 12; the end cover 70 is arranged at the mounting opening 11 and comprises a cover plate and an insert ring 75 arranged on the cover plate, the insert ring 75 is in inserted fit with the shell 10, and the cover plate is used for sealing the mounting opening 11; the first sealing ring 90 is sleeved outside the insert ring and used for sealing the joint of the cover plate and the mounting opening 11; the light-transmitting plate 20 is arranged in the shell 10 and used for sealing the detection port 12; and a second seal ring 80 provided between the light-transmitting plate 20 and the housing 10 for sealing a joint between the light-transmitting plate 20 and the housing 10; the press ring 30 is provided in the casing 10, abuts against the translucent plate 20, and fixes the translucent plate 20 to the casing 10.

The embodiment of the utility model provides an in both ends of casing 10 form respectively and detect mouthful 12 and installing port 11, when assembling, parts such as second sealing washer 80, light-passing board 20 and detector pack into casing 10 through installing port 11 in, end cover 70 and first sealing washer 90 are used for sealing installing port 11. The light-transmitting plate 20 is covered on the detection port 12, fixed by the press ring 30, and sealed by the second seal ring 80 on the joint surface of the light-transmitting plate 20 and the casing 10, and the end cover 70 is arranged on the installation port 11, is in plug fit with the casing 10 by the plug ring 75, and is sealed by the first seal ring 90 on the joint surface of the cover plate and the casing 10. So set up for casing 10 is inside to form confined explosion-proof chamber, can completely cut off the contact of detector and outside air, even if near take place methane and reveal also can not contact with the detector, can guarantee the security of product use, has stopped the emergence of explosion accident.

The embodiment of the utility model provides a methane telemeter 1 has handheld and fixed two kinds of using-way. Can carry by operating personnel and carry out interim measuring in the region, also can fix near gas pipeline, gas station, ore deposit way through mounting structure such as mount, carry out the monitoring of normality to specific position to can learn very first time after the methane leakage takes place.

The embodiment of the present invention provides a housing 10 and an end cover 70 which can be made of insulating materials such as plastics, and when a metal material is used for processing, insulating paint can be sprayed on the surface. The housing 10 and the end cap 70 may be connected by screws, rivets, snaps, etc., the insert ring 75 is used for guiding when the end cap 70 is installed, and the cover plate can apply a pressing force to the first sealing ring 90 to ensure that the mating surfaces of the two are sealed.

The transparent plate 20 covers the detection port 12, and the transparent plate 20 may be made of high-transmittance glass and has high laser transmittance. The second seal ring 80 and the first seal ring 90 may be nitrile rubber seal rings, silica gel seal rings, or the like.

It should be noted that the detector emits laser light with a specific wavelength through the laser emitting end 61, and determines whether methane leakage occurs according to the intensity of the received reflected light. The detector is positioned in the accommodating cavity and can be powered by a built-in battery or an external power line. When detecting that methane reveals, can remind personnel to pay attention to through modes such as sound, light. The detector can be integrated with an acousto-optic alarm module, and can also be connected to an external display screen through a signal wire, and the detection result is displayed through the display screen. Or, the detector can also be provided with a wireless transmitting component which can wirelessly transmit the detection result to receiving equipment such as a display screen.

When the power line or the signal line is externally connected, the position where the power line or the signal line passes through the housing 10 or the end cap 70 should be sealed by glue or the like.

Referring to fig. 3 to 5, in some possible embodiments, a first mounting hole is formed in the casing 10, a second mounting hole corresponding to the first mounting hole is formed in the pressing ring 30, and the methane telemeter 1 further includes a first fastening member 31 that is screwed to the first mounting hole and the second mounting hole, respectively.

In this embodiment, the pressing ring 30 is used for compressing and fixing the light-transmitting plate 20, and the light-transmitting plate 20 compresses the second sealing ring 80 to seal the detection port 12. The press ring 30 is detachably connected with the shell 10 through the first fastener 31, and when the light transmission plate 20 is worn and broken, the press ring 30 can be taken out to replace the light transmission plate 20. The first fastening member 31 may be a screw, a jaw, a snap, a limit pin, or the like.

In another embodiment of the pressing ring 30, a screw hole is opened in the housing 10, and the pressing ring 30 is screwed into the screw hole.

The outer wall of clamping ring 30 is equipped with the external screw thread in this embodiment, and casing 10 holds intracavity wall and is equipped with the internal thread that cooperates with it, and clamping ring 30 can butt and compress tightly light-passing board 20 at the in-process of screw in casing 10. When the light-transmitting plate 20 needs to be replaced, the press ring 30 is screwed out in the opposite direction. The center hole of the pressing ring 30 can be a hexagonal hole, so that the pressing ring can conveniently extend into the shell 10 through a wrench and other tools to rotate and screw.

Referring to fig. 3 and 4, in some possible embodiments, the housing 10 is provided with a second limiting groove 13 for accommodating the second sealing ring 80 and the transparent plate 20, and the second sealing ring 80 and the transparent plate 20 are embedded in the second limiting groove 13. During the equipment, second spacing groove 13 can make second sealing washer 80 and light-transmitting plate 20 fix a position central point fast and put to it is spacing to second sealing washer 80 and light-transmitting plate 20, prevents that it from taking place the skew, and second sealing washer 80 and light-transmitting plate 20 installation are more convenient.

Since the accommodating cavity of the housing 10 has a large depth and a narrow inner space, it is inconvenient for components such as the detector to be installed and fixed in the housing. To solve this problem, referring to fig. 5 to 7, in some possible embodiments, the methane telemeter 1 further includes a first bracket 40 disposed in the housing 10, the first bracket 40 includes a fixed plate 41 and a mounting plate 42 disposed at an angle, the fixed plate 41 is connected to the end cap 70, the mounting plate 42 extends along the axial direction of the housing 10, and the mounting plate 42 is provided with a detector.

In this embodiment, the transparent plate 20 and the pressing ring 30 are mounted on the casing 10, the detector and the first bracket 40 are mounted on the end cover 70, and finally the end cover 70 and the casing 10 are aligned together, and the first bracket 40 and the detector are accommodated in the casing 10 to complete the assembly. So set up, simple and convenient during the equipment can guarantee simultaneously that the detector has sufficient space to install fixedly, helps improving the packaging efficiency.

Specifically, the fixed plate 41 and the mounting plate 42 may be angled at 90 ° or other angles to each other.

As shown in fig. 6, since the mounting plate 42 is suspended in the housing 10, in order to prevent the normal operation of the detector from being affected by the too large vibration amplitude of the mounting plate 42 when the detector shakes or vibrates, the two sides of the mounting plate 42 are folded upwards and/or downwards to form the folding plates 421, so that the rigidity of the mounting plate 42 can be improved, the stability of the detector after being mounted on the first bracket 40 is improved, and the advantages of compact structure and stable structure are considered.

Referring to fig. 6 and 7, in some possible embodiments, a fixing post 71 is disposed on the cover plate, a first fixing hole is disposed on the fixing plate 41, the fixing post 71 is disposed through the first fixing hole, and a penetrating end of the fixing post 71 is connected to a locking nut 72.

In this embodiment, the fixing posts 71 can guide the first bracket 40 when the first bracket 40 is installed, so that the first bracket 40 can be quickly aligned. The lock nut 72 is screwed to a portion of the fixing post 71 that passes through the first fixing hole, and abuts against the fixing plate 41, thereby pressing and fixing the fixing plate 41. And the threaded connection mode is adopted, so that the installation and the disassembly are both convenient.

Referring to fig. 5 to 7, in some possible embodiments, the detector includes an electrical component 50 and an optical component 60 disposed along the axial direction of the housing 10, and an emitting end 61 of the optical component 60 faces the detection port 12.

In the embodiment, the electrical component 50 and the optical component 60 are arranged along the axial direction of the housing 10, and the emitting end 61 and the detecting end face the detecting port 12 without being blocked. Overall structure is compact, and space utilization is high, can reduce the volume of equipment, conveniently carries or the installation is fixed.

Referring to fig. 5 to 7, in some possible embodiments, the methane telemeter 1 further includes a second bracket 51 for fixing the electrical component 50, the second bracket 51 is connected to the first bracket 41, and the electrical component 60 includes a plurality of circuit boards 53 sequentially arranged along a first direction, the first direction is perpendicular to the axis of the housing 10; and a plurality of pillars 52, the pillars 52 are used for connecting two adjacent circuit boards 53, so that a heat dissipation space is formed between the two adjacent circuit boards 53.

The second bracket 51 in this embodiment may be fixed to the first bracket 40 by welding, gluing, screwing, or the like. Adjacent circuit boards 53 are separated by a support 52 to facilitate heat dissipation. The support 52 may be fixed by gluing or the like. The plurality of circuit boards 53 are arranged in the first direction, so that the space utilization rate can be improved, and the size of the device can be reduced.

Referring to fig. 5 to 7, in some possible embodiments, the circuit board 53 is provided with a jack, the pillar 52 includes a supporting portion and a connecting portion inserted into the jack, a connecting hole for accommodating the connecting portion is formed on an end surface of the supporting portion, and the supporting portion is respectively abutted against the adjacent circuit board 53 to form a heat dissipation space.

In this embodiment, the connection hole of the previous pillar 52 is matched with the connection part of the next pillar 52, which may be specifically plug-in, snap-in, threaded, bonded, etc., and can clamp and fix the circuit board 53. The coupling portion of the lowermost strut 52 is coupled to the second bracket 51, and the coupling hole of the uppermost strut 52 is coupled to the second fastening member 54. The circuit board 53 can be clamped and fixed between the pillar 52 and the second bracket 51, and between the pillar 52 and the second fastener 54.

Referring to fig. 1 and 2, in some possible embodiments, a first connecting plate 15 is circumferentially disposed at one end of the housing 10 adjacent to the cover plate, a second connecting plate 74 is formed at the periphery of the cover plate, and the second connecting plate 74 is connected to the first connecting plate 15 by a third fastener 73.

As shown in fig. 1, in the present embodiment, a flange joint surface is formed between the first connecting plate 15 and the second connecting plate 74, and the plurality of third fastening members 73 are arranged uniformly along the circumferential direction, so as to provide uniform pressing force. In order to further improve the sealing effect, a sealant can be coated between the joint surfaces of the two.

Referring to fig. 5 to 7, in some possible embodiments, the housing 10 is provided with a first limiting groove 14, and the first sealing ring 90 is accommodated in the first limiting groove 14, so as to limit the first sealing ring 90 and prevent the first sealing ring from deviating.

It is to be understood that, the above-mentioned embodiments may be freely combined or deleted to form different combination embodiments, and details of each combination embodiment are not repeated herein, and after this description, it can be considered that the present invention has described each combination embodiment and can support different combination embodiments.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. Methane telemeter, its characterized in that includes:

the detector comprises a shell, a detector and a detector, wherein the shell is used for accommodating the detector, and the two opposite ends of the shell are respectively provided with an installation port and a detection port;

the end cover is arranged at the mounting opening and comprises a cover plate and an insert ring arranged on the cover plate, the insert ring is in inserted fit with the shell, and the cover plate is used for sealing the mounting opening;

the first sealing ring is sleeved outside the insert ring and used for sealing the joint of the cover plate and the mounting opening;

the light-transmitting plate is arranged in the shell and used for sealing the detection port;

the second sealing ring is arranged between the light-transmitting plate and the shell and used for sealing the joint of the light-transmitting plate and the shell; and

and the compression ring is arranged in the shell and is abutted against the light-transmitting plate to fix the light-transmitting plate in the shell.

2. The methane telemeter according to claim 1, wherein a first mounting hole is provided in the housing, a second mounting hole corresponding to the first mounting hole is provided in the pressure ring, and the methane telemeter further comprises a first fastener in threaded connection with the first mounting hole and the second mounting hole, respectively.

3. The methane telemeter of claim 1, wherein the housing has a threaded hole, and the pressure ring is in threaded connection with the threaded hole.

4. A methane telemeter according to claim 1, wherein the housing is provided with a second limiting groove for accommodating the second seal ring and the light transmitting plate, and the second seal ring and the light transmitting plate are embedded in the second limiting groove.

5. A methane telemeter according to claim 1, further comprising a first support provided in the housing, the first support comprising a fixed plate and a mounting plate arranged at an included angle, the fixed plate being connected to the end cap, the mounting plate extending axially of the housing, the mounting plate having the detector mounted thereon.

6. The methane telemeter according to claim 5, wherein the cover plate is further provided with a fixing column, the fixing plate is provided with a first fixing hole, the fixing column penetrates through the first fixing hole, and a through end of the fixing column is in threaded connection with a locking nut.

7. The methane telemeter of claim 5, wherein the detector comprises an electrical component and an optical component disposed axially along the housing, the optical component having an emission end facing the detection port.

8. The methane telemeter of claim 7, further comprising a second bracket for securing the electrical component, the second bracket being connected to the first bracket, the electrical component comprising:

the circuit boards are sequentially arranged along a first direction, and the first direction is perpendicular to the axis of the shell; and

the support columns are used for connecting two adjacent circuit boards, so that a heat dissipation space is formed between the two adjacent circuit boards.

9. A methane telemeter according to claim 8, wherein the circuit board has a jack, the pillar includes a support portion and a connecting portion that is engaged with the jack, a connecting hole for receiving the connecting portion is formed in an end surface of the support portion, and the support portions are respectively abutted against the adjacent circuit boards to form the heat dissipation space.

10. The methane telemeter according to claim 1, wherein the housing has a first limiting groove formed therein, and the first seal ring is received in the first limiting groove.

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