CN219740859U - Waterproof structure of laser methane sensor - Google Patents

Abstract

The utility model relates to a waterproof structure of a laser methane sensor, which comprises a sensor shell, wherein the sensor shell comprises an upper shell and a lower shell which are vertically adjacent, a connecting ring is fixedly arranged at the lower end part of the upper shell, an annular groove matched with the connecting ring is formed in the lower shell, the connecting ring is clamped in the annular groove and is attached to the inner wall of the annular groove, a plurality of positioning bolts are circumferentially arranged on the connecting ring, the positioning bolts penetrate through the connecting ring and are in threaded connection with the lower shell, a connector is fixedly arranged at one end of the upper shell, which is far away from the lower shell, a through hole matched with a connecting wire is formed in the connector, a threaded end is fixedly connected at one end of the lower shell, which is far away from the upper shell, a waterproof cylinder is in threaded connection with the threaded end, and a cavity is formed in the waterproof cylinder. The utility model has the effect of reducing the damage probability of the laser methane sensor caused by rain water soaking.

Description

Waterproof structure of laser methane sensor

Technical Field

The utility model relates to the technical field of methane detection, in particular to a waterproof structure of a laser methane sensor.

Background

The laser methane sensor is a device for detecting the methane content in gas, and the principle is that the concentration of methane gas is detected through the interaction between laser beam detection and methane molecules, and the laser methane sensor is usually arranged in environments such as mines, gas wells, underground wells and the like which are easy to generate methane gas.

The laser methane sensor comprises a connecting wire, a sensor shell and a laser probe arranged in the sensor shell, wherein the connecting wire penetrates through the shell and is connected with the laser probe, and the connecting wire is used for supplying power to the laser probe and transmitting detection signals. When the laser methane sensor is installed in a gas well, rainwater can be poured into the gas well in rainy days, and when the laser methane sensor is submerged by the rainwater, the laser probe is soaked by the rainwater, so that damage and failure are easily caused, and potential safety hazards exist.

Disclosure of Invention

The utility model provides a waterproof structure of a laser methane sensor, which aims to reduce the probability of damage caused by rain soaking of the laser methane sensor.

The utility model provides a waterproof structure of a laser methane sensor, which adopts the following technical scheme:

the utility model provides a laser methane sensor waterproof construction, includes the sensor shell, the sensor shell includes along vertical adjacent last casing and lower casing, go up the casing lower extreme and set firmly the go-between, the ring channel with the go-between adaptation is seted up to the lower casing, the go-between joint is in the ring channel and with the laminating of ring channel inner wall, the go-between is equipped with a plurality of positioning bolt along circumference, positioning bolt wears to establish go-between and lower casing threaded connection, the one end that the lower casing was kept away from to the last casing has set firmly the connector, the through-hole with the connecting wire adaptation has been seted up to the connector, the one end fixedly connected with screw thread end of going up the casing is kept away from to the lower casing, screw thread end threaded connection has waterproof section of thick bamboo, the cavity has been seted up to waterproof section of thick bamboo.

Through adopting above-mentioned technical scheme, laser probe installs in the sensor shell, goes up casing and lower casing butt joint, and ring channel inner wall and go up the laminating of go up the spacing with the go-between, and then to go up the go-between, positioning bolt and lower casing cooperation are fixed a position the go-between for go up casing and lower casing mutual location. The connecting wire wears to establish the through-hole, and the connector is spacing to the connecting wire, and through-hole inner wall and connecting wire laminating reduce the probability that the rainwater got into in the sensor shell by the through-hole. The screw thread end is spacing to waterproof section of thick bamboo, and the vertical setting of sensor housing is located the lower extreme during installation, and rainwater climbs the time delay from bottom to top, forms the air column in the waterproof section of thick bamboo cavity, and then blocks in the rainwater gets into sensor housing, is favorable to reducing the probability that laser methane sensor received the rainwater to soak and leads to damaging.

Optionally, the one end that the screw thread end is close to the upper casing has offered the draw-in groove along circumference, and the draw-in groove is embedded to be equipped with the rubber ring, and waterproof section of thick bamboo cover is established with the rubber ring outside and rather than the butt.

Through adopting above-mentioned technical scheme, the draw-in groove inner wall carries out spacingly to the rubber ring, and waterproof section of thick bamboo extrusion rubber ring for rubber ring all laminates with screw thread end and waterproof section of thick bamboo inner wall, is favorable to improving the leakproofness between waterproof section of thick bamboo and the screw thread end.

Optionally, the lower end of the waterproof cylinder is connected with an end cover in a threaded manner, and the end cover is fixedly provided with a mud blocking net.

Through adopting above-mentioned technical scheme, keep off the mud net and be favorable to reducing the probability that mud got into inside the sensor shell along the cavity, end cover and waterproof section of thick bamboo separable, and then it is comparatively convenient when making the clearance or changing fender mud net.

Optionally, the fender mud net lower tip is equipped with the fin with the end cover adaptation, and the fin is close to the fixed slide bar that is equipped with in one side of end cover, and the slide bar wears to establish fender mud net and sliding connection with it, and the one end joint that the fin was kept away from to the slide bar has the limiting plate.

Through adopting above-mentioned technical scheme, keep off the mud net and carry out spacingly to the fin through the slide bar, and then make the fin along vertical to keeping off the mud net and be close to or keep away from, spacing dish is spacing to the slide bar, and then spacing fin's travel distance. Under the initial condition, the float is influenced by gravity and is far away from the mud-guard net, rainwater accumulates, and when the horizontal plane rises, the float is lifted by the buoyancy of rainwater and is attached to the end cover, and the end cover is sealed, so that the probability that the rainwater enters the cavity is further reduced.

Optionally, the connecting groove has been seted up to the one end that the connector kept away from the upper casing, and the joint has the sealing washer in the connecting groove, and the sealing washer comprises elastic material, and the one end that the sealing washer kept away from the upper casing is located the connecting groove outside, and the connector external screw thread is connected with the butt ring, and the butt ring has set firmly the clamp ring, clamp ring and sealing washer butt.

Through adopting above-mentioned technical scheme, the spread groove inner wall is spacing to the sealing washer, rotates the butt ring for the clamping ring is close to the connector, and clamping ring and connector cooperation extrusion sealing washer, and then makes the sealing washer warp and laminate with the connecting wire, is favorable to further reducing the rainwater and gets into the inside probability of sensor shell by the through-hole.

Optionally, the inside inner ring groove of having seted up of lower casing, inner ring inslot sliding connection has the dust screen, and the dust screen is laminated with lower casing, and the joint groove with inner ring inslot intercommunication has been seted up to lower casing, joint inslot joint has the elastic ring, elastic ring and dust screen butt.

Through adopting above-mentioned technical scheme, the inner ring groove inner wall is spacing to the dust screen, and the joint groove is spacing to the elastic ring, and then makes elastic ring and lower casing cooperation fix a position the dust screen, and the dust screen is favorable to reducing the probability that the dust got into in the sensor shell.

Optionally, a plurality of fixed rings are fixedly arranged in the waterproof cylinder along the circumferential direction, and reinforcing ribs are fixedly connected between the adjacent fixed rings.

Through adopting above-mentioned technical scheme, solid fixed ring and strengthening rib are favorable to improving waterproof section of thick bamboo's structural strength.

Optionally, a plurality of anti-skidding lines are offered along circumference in waterproof section of thick bamboo outside, and anti-skidding lines evenly set up along waterproof section of thick bamboo circumference.

Through adopting above-mentioned technical scheme, the antiskid line makes the user more convenient when holding waterproof section of thick bamboo, is favorable to improving the convenience when installing and dismantling waterproof section of thick bamboo simultaneously.

In summary, the present utility model includes at least one of the following beneficial technical effects:

1. the laser probe is installed in the sensor shell, and upper casing and lower casing butt joint, ring channel inner wall and go up the laminating of go-between, and then spacing to the go-between, and positioning bolt and lower casing cooperation are fixed a position the go-between for upper casing and lower casing are mutual location. The connecting wire wears to establish the through-hole, and the connector is spacing to the connecting wire, and through-hole inner wall and connecting wire laminating reduce the probability that the rainwater got into in the sensor shell by the through-hole. The thread end limits the waterproof cylinder, the sensor housing is vertically arranged during installation, the waterproof cylinder is positioned at the lowest end, rainwater is delayed from bottom to top, an air column is formed in the cavity of the waterproof cylinder, and then rainwater is prevented from entering the sensor housing, so that the probability of damage caused by rainwater soaking of the laser methane sensor is reduced;

2. the fender mud net is spacing to the fin through the slide bar, and then makes the fin be close to or keep away from to fender mud net along vertical, and spacing dish is spacing to the slide bar, and then spacing fin's travel distance. In the initial state, the floating sheets are far away from the mud-guard net under the influence of gravity, rainwater is accumulated, and when the horizontal plane rises, the floating sheets are lifted by the buoyancy of rainwater and are attached to the end cover, and the end cover is sealed, so that the probability of rainwater entering the cavity is further reduced;

3. the inner ring groove inner wall is spacing to the dust screen, and the joint groove is spacing to the elastic ring, and then makes elastic ring and inferior valve body cooperation fix a position the dust screen, and the dust screen is favorable to reducing the probability that the dust got into in the sensor shell.

Drawings

Fig. 1 is a schematic diagram of the overall structure of a waterproof structure of a laser methane sensor.

Fig. 2 is a schematic view for highlighting the internal structures of the upper and lower cases.

Fig. 3 is an enlarged schematic view of the portion a in fig. 2.

Fig. 4 is an enlarged schematic view of a portion B in fig. 2.

Fig. 5 is an enlarged schematic view of a portion C in fig. 2.

Reference numerals illustrate: 1. an upper housing; 11. a connecting ring; 111. positioning bolts; 12. a connector; 121. a through hole; 122. a connecting groove; 123. a seal ring; 124. an abutment ring; 125. a clamping ring; 2. a lower housing; 21. an annular groove; 22. a threaded end; 221. a clamping groove; 222. a rubber ring; 23. an inner ring groove; 231. a dust screen; 232. a clamping groove; 233. an elastic ring; 3. a waterproof cylinder; 31. an end cap; 311. a mud blocking net; 32. a floating piece; 321. a slide bar; 322. a limiting disc; 33. a fixing ring; 34. reinforcing ribs; 35. anti-skid lines; 10. a laser probe; 100. and (5) connecting wires.

Detailed Description

The present utility model will be described in further detail below with reference to the accompanying drawings.

The embodiment of the utility model discloses a waterproof structure of a laser methane sensor.

Referring to fig. 1 and 2, a waterproof structure of a laser methane sensor includes a sensor housing including an upper case 1 and a lower case 2. The laser probe 10 is installed in the lower shell 2, the lower shell 2 provides protection for the laser probe 10, and the transverse frame surfaces of the upper shell 1 and the lower shell 2 are circular and have the same diameter. The upper case 1 is located at the upper end of the lower case 2 and abuts against the lower case 2, and the upper case 1 and the lower case 2 cooperate to protect the laser probe 10.

Referring to fig. 2 and 3, a connecting ring 11 is fixed on one side of the upper housing 1, which is close to the lower housing 2, an annular groove 21 adapted to the connecting ring 11 is formed in the lower housing 2, an operator inserts the connecting ring 11 into the annular groove 21, the connecting ring 11 is attached to the inner wall of the annular groove 21, and then the inner wall of the annular groove 21 limits the upper housing 1 through the connecting ring 11. The connecting ring 11 is provided with a plurality of uniformly distributed positioning bolts 111 along the circumferential direction, and an operator sequentially wears the positioning bolts 111 through the connecting ring 11 and makes the positioning bolts 111 in threaded connection with the lower housing 2. The positioning bolts 111 cooperate with the lower housing 2 to thereby position the upper housing 1 and the lower housing 2 with respect to each other.

Referring to fig. 2 and 4, a joint is fixed to one end of the upper case 1, which is remote from the lower case 2, and the joint is provided with a through hole 121 communicating with the inside of the sensor housing. The connecting wire 100 of the laser probe 10 is penetrated out of the through hole 121, and the connecting wire 100 is attached to the inner wall of the through hole 121, so that the probability that rainwater enters the sensor housing from the through hole 121 is reduced. The upper end of the connector 12 is provided with a connecting groove 122, the connecting groove 122 is clamped with a sealing ring 123, and the sealing ring 123 is attached to the inner wall of the connecting groove 122, so that the connecting groove 122 limits the sealing ring 123.

Referring to fig. 2 and 4, the sealing ring 123 is made of an elastic material and has a certain deformability, the upper end portion of the coupling head 12 is screw-coupled with the abutment ring 124, and an operator rotates the abutment ring 124 so that the abutment ring 124 moves along the length direction of the coupling head 12. The abutting ring 124 is fixed with the clamp ring 125 deviating from the one end of last casing 1, and the part that upper casing 1 was kept away from to the sealing washer 123 extends outside the spread groove 122, and operating personnel rotates the abutting ring 124 and makes clamp ring 125 and sealing washer 123 butt, and then drives clamp ring 125 and connector 12 cooperation extrusion sealing washer 123 for sealing washer 123 is close to and laminates with connecting wire 100 to connecting wire 100. And further, the gap between the connecting wire 100 and the inner wall of the through hole 121 is reduced, which is beneficial to reducing the probability that rainwater enters the sensor housing along the connecting position of the connecting wire 100 and the inner wall of the through hole 121.

Referring to fig. 2, a screw end 22 is fixed to the lower end of the lower case 2, the screw end 22 is screw-coupled with a waterproof cylinder 3, and the upper case 1, the lower case 2, and the waterproof cylinder 3 are vertically aligned in order from top to bottom when an operator installs the sensor. The waterproof cylinder 3 is provided with a cavity, and gas enters the sensor shell from the cavity under normal conditions to be detected. When rainwater gathers the lower tip of waterproof section of thick bamboo 3 when spreading, the gas in the waterproof section of thick bamboo 3 is difficult for upwards discharging, and then gathers and form the air column in waterproof section of thick bamboo 3, and the air column stops the rainwater to get into the cavity from waterproof section of thick bamboo 3 lower tip, and then is favorable to reducing laser methane sensor and receives the rainwater to soak the probability that leads to damaging.

Referring to fig. 2, the screw end 22 is provided with a catching groove 221, and the catching groove 221 is located near one end of the lower case 2 and is disposed along the circumference of the screw end 22. The clamping groove 221 is internally embedded with a rubber ring 222, the rubber ring 222 is attached to the inner wall of the clamping groove 221, and the inner wall of the clamping groove 221 limits the rubber ring. The waterproof cylinder 3 is sleeved outside the rubber ring 222 and is abutted against the rubber ring 222, the rubber ring 222 has certain elasticity, and the waterproof cylinder 3 extrudes the rubber ring 222, so that the rubber ring 222 is attached to the waterproof cylinder 3 and the threaded end 22, and the air tightness between the waterproof cylinder 3 and the threaded end 22 is improved.

Referring to fig. 2, an inner ring groove 23 is formed in the inner wall of the lower housing 2, and a dust screen 231 is slidably connected in the inner ring groove 23, so that the dust screen 231 is beneficial to reducing the probability that dust in air enters the lower housing 2 along the cavity to affect the operation of the laser probe 10. The clamping groove 232 is formed in the inner annular grass wall, the elastic ring 233 is arranged in the clamping groove 232, the elastic ring 233 is made of rubber materials and has certain elasticity, an operator places the elastic ring 233 into the clamping groove 232, the elastic ring 233 is attached to the inner wall of the clamping groove 232, at the moment, the elastic ring 233 is abutted to the dust screen 231, and the dust screen 231 is limited.

Referring to fig. 2 and 5, one end of the waterproof cylinder 3 far away from the lower shell 2 is in threaded connection with an end cover 31, an air hole matched with the cavity is formed in the end cover 31, a mud blocking net 311 is fixed on the end cover 31, and the mud blocking net 311 is beneficial to reducing the probability of mud entering the cavity of the waterproof cylinder 3. The operator dismantles end cover 31 when rotating end cover 31, and then makes the clearance keep off mud net 311 time comparatively convenient.

Referring to fig. 2 and 5, the fender is provided at one end thereof remote from the lower case 2 with a float 32, and the float 32 is made of plastic material and has a floating ability in water. The upper end of the floating piece 32 is fixedly provided with an integrally formed slide bar 321, and the slide bar 321 is penetrated by a mud guard and is in sliding connection with the mud guard, and the mud guard limits the slide bar 321, so that the floating piece 32 approaches or departs from the mud guard along the length direction of the slide bar 321.

Referring to fig. 2 and 5, in a normal state, the float 32 is moved away from the fender due to the influence of gravity, a limiting plate 322 is clamped at one end of the slide bar 321 away from the float 32, the slide bar 321 drives the limiting plate 322 to be attached to the fender, and then the displacement distance of the float 32 relative to the fender is limited. The rainwater gathers and climbs upwards and delays, and the floating piece 32 receives the buoyancy of rainwater, and then upwards moves and finally laminate with end cover 31 under the spacing effect of slide bar 321, and then is favorable to reducing the probability that the rainwater gets into waterproof section of thick bamboo 3 cavity once.

Referring to fig. 1 and 2, a plurality of fixing rings 33 are fixed to the inner wall of the waterproof cylinder 3, and the fixing pipes are uniformly arranged along the length direction of the waterproof cylinder 3, and the fixing rings 33 are beneficial to improving the anti-extrusion capacity of the waterproof cylinder 3. And the reinforcing ribs 34 are arranged between the adjacent fixing rings 33, and the reinforcing ribs 34 are beneficial to improving the sample bending capacity of the waterproof cylinder 3, so that the overall structural strength of the waterproof cylinder 3 is improved. Anti-skid patterns 35 are formed in the outer side of the waterproof cylinder 3, the anti-skid patterns 35 are arranged along the circumferential direction, and the anti-skid patterns 35 are beneficial to improving friction between the waterproof cylinder 3 and hands of an operator when the operator holds the waterproof cylinder 3, so that the operator is convenient to detach and install the waterproof cylinder 3.

The implementation principle of the waterproof structure of the laser methane sensor provided by the embodiment of the utility model is as follows: the sensor is mounted vertically in the environment to be tested such that the waterproof cartridge 3 is at the lowermost end. The laser probe 10 is located in the upper shell 1 and the lower shell 2, and the upper combined body is matched with the lower shell 2 to protect the laser probe 10. The inner wall of the annular groove 21 is attached to the connecting ring 11, so that the upper housing 1 and the lower housing 2 are positioned with each other, and the upper housing 1 and the lower housing 2 are connected with each other by the positioning bolts 111. The connecting wire 100 penetrates through the hole 121, so that the connecting head 12 limits the connecting wire 100, and the clamping ring 125 presses the sealing ring 123 by rotating the abutting ring 124, so that a gap between the connecting wire 100 and the inner wall of the hole 121 is reduced. When rainwater is accumulated, an air column is formed in the waterproof cylinder 3, and then rainwater is blocked from entering the lower shell 2 along the cavity, meanwhile, the floating piece 32 receives buoyancy to float upwards, and then the end cover 31 is sealed, so that the probability that the rainwater enters the cavity from the lower end part of the waterproof cylinder 3 is further reduced, and the probability that the laser methane sensor is damaged due to rainwater soaking is reduced.

The above embodiments are not intended to limit the scope of the present utility model, so: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims (8)

1. The utility model provides a laser methane sensor waterproof construction, includes sensor housing, its characterized in that: the sensor shell comprises an upper shell body (1) and a lower shell body (2) which are vertically adjacent, a connecting ring (11) is fixedly arranged at the lower end part of the upper shell body (1), an annular groove (21) which is matched with the connecting ring (11) is formed in the lower shell body (2), the connecting ring (11) is clamped in the annular groove (21) and is attached to the inner wall of the annular groove (21), a plurality of positioning bolts (111) are circumferentially arranged on the connecting ring (11), the positioning bolts (111) penetrate through the connecting ring (11) and are in threaded connection with the lower shell body (2), a connector (12) is fixedly arranged at one end, far away from the lower shell body (2), of the upper shell body (2), a through hole (121) which is matched with the connecting wire (100) is formed in the lower shell body (12), a threaded end (22) is fixedly connected with a threaded end (22), a waterproof cylinder (3) is arranged in the threaded connection with the threaded end, and a cavity is formed in the waterproof cylinder (3).

2. The laser methane sensor waterproof structure according to claim 1, wherein: the screw thread end (22) is close to one end of the upper shell (1) and is provided with a clamping groove (221) along the circumferential direction, a rubber ring (222) is embedded in the clamping groove (221), and the waterproof cylinder (3) is sleeved outside the rubber ring (222) and is abutted to the rubber ring.

3. The laser methane sensor waterproof structure according to claim 1, wherein: the lower end part of the waterproof cylinder (3) is connected with an end cover (31) in a threaded manner, and the end cover (31) is fixedly provided with a mud blocking net (311).

4. A laser methane sensor waterproofing structure according to claim 3, characterized in that: the lower end of the mud blocking net (311) is provided with a floating sheet (32) which is matched with the end cover (31), one side of the floating sheet (32) close to the end cover (31) is fixedly provided with a sliding rod (321), the sliding rod (321) penetrates through the mud blocking net (311) and is in sliding connection with the mud blocking net, and one end, far away from the floating sheet (32), of the sliding rod (321) is clamped with a limiting disc (322).

5. The laser methane sensor waterproof structure according to claim 1, wherein: the one end that upper casing (1) was kept away from to connector (12) has been seted up spread groove (122), and joint has sealing washer (123) in spread groove (122), and sealing washer (123) are by elastic material constitution, and the one end that upper casing (1) was kept away from to sealing washer (123) is located spread groove (122) outside, and connector (12) external screw thread connection has butt ring (124), and butt ring (124) has set firmly clamp ring (125), clamp ring (125) and sealing washer (123) butt.

6. The laser methane sensor waterproof structure according to claim 1, wherein: the inner ring groove (23) is formed in the lower shell (2), the dustproof net (231) is connected in the inner ring groove (23) in a sliding mode, the dustproof net (231) is attached to the lower shell (2), the clamping groove (232) communicated with the inner ring groove (23) is formed in the lower shell (2), the elastic ring (233) is clamped in the clamping groove (232), and the elastic ring (233) is abutted to the dustproof net (231).

7. The laser methane sensor waterproof structure according to claim 1, wherein: a plurality of fixing rings (33) are fixedly arranged in the waterproof cylinder (3) along the circumferential direction, and reinforcing ribs (34) are fixedly connected between every two adjacent fixing rings (33).

8. The laser methane sensor waterproof structure according to claim 1, wherein: a plurality of anti-skidding lines (35) are formed in the outer side of the waterproof cylinder (3) along the circumferential direction, and the anti-skidding lines (35) are uniformly formed in the waterproof cylinder (3) along the circumferential direction.