High-precision chilled mirror dew-point instrument

Abstract

The invention provides a high-precision chilled mirror dew-point instrument, and relates to the technical field of chilled mirror dew-point instruments, the high-precision chilled mirror dew-point instrument comprises an instrument body, a connecting pipe and a display screen are arranged on one side of the instrument body, a plurality of control buttons are arranged on one side, close to the display screen, of the outer surface of the instrument body, and a fastening device is arranged on one side, close to the connecting pipe, of the outer surface of the instrument body. The fastening device comprises a rectangular block and a positioning block, and the inner wall of the groove ring is fixedly connected with a rubber sheet. Through the arrangement of the fastening device, when the gas conveying pipe is inserted into the connecting pipe, the connection between the gas conveying pipe and the connecting pipe is reinforced by pressing the pressing block at the bottom end of the round rod on the outer side of the gas conveying pipe; the gas conveying pipe and the connecting pipe are prevented from loosening and falling off as much as possible, the rubber sheet in the groove ring expands outwards to further seal the outer side of the connecting position between the gas conveying pipe and the connecting pipe, and the stability and the sealing performance are improved when the gas conveying pipe and the connecting pipe are used after being connected.

Description

Technical Field

[0001] The present invention relates to the technical field of cold mirror dew point meters, and particularly to a high-precision cold mirror dew point meter. Background Technique

[0002] The cold mirror dew point meter mainly utilizes the principle that gases with different moisture contents will condense dew on the mirror surface at different temperatures. When the gas is under a certain pressure and the temperature is slightly lower than the dew point, the water vapor in the gas will condense into dew, causing the light irradiated on the mirror surface to undergo diffuse reflection, and the photosensitive device generates a change in the electrical signal. The detection circuit sends the change in the electrical signal and temperature data to the control system for analysis, and calculates the dew point temperature value of the measured gas through an intelligent algorithm and displays it.

[0003] When using the cold mirror dew point meter, connect the inlet pipeline to the connecting pipe on one side of the instrument to allow the gas to enter the instrument for detection. During long-term use, the connection between the connecting pipe and the inlet pipeline may be worn on the surface due to excessive plugging and unplugging, resulting in leakage at the connection between the inlet pipe and the connecting pipe, affecting the normal use of the cold mirror dew point meter. Summary of the Invention

[0004] The object of the present invention is to solve the problem that when using the cold mirror dew point meter, the inlet pipeline is connected to the connecting pipe on one side of the instrument to allow the gas to enter the instrument for detection. During long-term use, the connection between the connecting pipe and the inlet pipeline may be worn on the surface due to excessive plugging and unplugging, resulting in leakage at the connection between the inlet pipe and the connecting pipe, affecting the normal use of the cold mirror dew point meter, and a high-precision cold mirror dew point meter is proposed.

[0005] To achieve the above object, the present invention adopts the following technical solution: A high-precision cold mirror dew point meter, including an instrument body, a connecting pipe and a display screen are arranged on one side of the instrument body, several control buttons are arranged on the outer surface of the instrument body close to the display screen, the connecting pipe is composed of an outer sleeve and an inner inlet pipe, the connecting pipe is used to connect with the gas delivery pipe, the display screen is used to display detection data, and a fastening device is arranged on the outer surface of the instrument body close to the connecting pipe to reinforce the connection between the gas delivery pipe and the connecting pipe.

[0006] Preferably, the fastening device includes:

[0007] A rectangular block and a positioning block, the rectangular block and the positioning block are fixed on the outer surface of the instrument body above the connecting pipe, a round rod is slidably connected to the inner wall of the rectangular block, the bottom end of the round rod is fixedly connected to a pressing block, the pressing block is located inside the sleeve of the connecting pipe, a first spring is arranged on the outer surface of the round rod, and the first spring is located between the rectangular block and the connecting pipe to limit the position of the round rod, and a threaded ring is threadedly connected to the outer surface of the round rod, and the threaded ring is located between the positioning block and the rectangular block;

[0008] A groove ring and a conical block. The groove ring is fixed at one end of the connecting pipe away from the instrument body. A rubber sheet is fixedly connected to the inner wall of the groove ring. One side of the instrument body close to the round rod is fixedly connected with a cylinder. One side of the cylinder is connected to the groove ring through a pipeline. A piston rod is slidably connected to the inner wall of the cylinder. A second spring is arranged on the outer surface of the piston rod. The second spring is located between the piston rod and the cylinder to limit the position of the piston rod on one side of the cylinder. One end of the piston rod away from the cylinder is fixedly connected with a spherical block. The conical block is fixed at the top of the round rod. The spherical block is located on the inclined surface side of the conical block.

[0009] The effects achieved by the above components are as follows: By setting the pressing block, when using the cold mirror dew point instrument, insert the gas delivery pipe into the sleeve inside the connecting pipe. When one end of the gas delivery pipe enters the inside of the connecting pipe, it will push the pressing block to make the round rod slide upward on the inner wall of the rectangular block and compress the first spring. Through the thrust of the first spring, the bottom end of the pressing block presses on the outer surface of the gas delivery pipe. When the round rod moves upward, the inclined surface side of the conical block will move on one side of the spherical block, causing the spherical block to move away from the conical block on the surface of the conical block, pushing the piston rod to slide on the inner wall of the cylinder and compress the second spring. The piston rod pushes the air inside the cylinder into the groove ring through the pipeline, increasing the air pressure inside the groove ring to make the rubber sheet expand outward, so that the expanded rubber sheet fits on the outside of the gas delivery pipe, further sealing the outside of the connection between the gas delivery pipe and the connecting pipe. Finally, rotate the threaded ring on the outer surface of the round rod to make the threaded ring move upward on the outer surface of the round rod, so that the top end of the threaded ring abuts against the bottom surface of the positioning block, fixing the positions of the round rod and the pressing block, so that the round rod will not move upward. Adjust the detection parameters inside the instrument body through the touch button on one side of the instrument body, so that the gas enters the instrument body through the delivery pipeline, and operate the micro cooler inside the instrument body to lower the gas temperature. When the temperature is slightly lower than the dew point, the water vapor in the gas will condense into dew, causing the light irradiated on the mirror surface to produce diffuse reflection, and the photosensitive device will generate an electrical signal change. The detection circuit sends the electrical signal change and temperature data to the control system for analysis, calculates the dew point temperature value of the measured gas through an intelligent algorithm and displays it on the display screen. After use, rotate the threaded ring away from the bottom end of the positioning block and pull out the gas delivery pipe outward. The first spring will return to its original state and push the round rod and the pressing block to move downward to return to their original positions. The second spring on the outside of the piston rod will return to its original state and push the piston rod and the spherical block back to their original positions and make the excess air inside the groove ring return to the cylinder.

[0010] Preferably, the outer edge of the bottom end of the pressing block is arc-shaped.

[0011] The effects achieved by the above components are as follows: By setting the outer edge of the bottom end of the pressing block to be arc-shaped, it is easier to push the pressing block upward when the gas delivery pipe is inserted into the connecting pipe.

[0012] Preferably, a positioning groove is formed at the top end of the conical block, and the spherical block moves inside the positioning groove.

[0013] The effect achieved by the above components is that when the round rod pushes the conical block upward, the spherical block will move inside the positioning groove. The position of the spherical block on one side of the conical block can be restricted through the positioning groove, and it is possible to avoid the spherical block from tilting left and right when moving on one side of the conical block as much as possible.

[0014] Preferably, there are several convex blocks on the outer surface of the threaded ring, and the convex blocks are circumferentially distributed on the outer surface of the threaded ring.

[0015] The effect achieved by the above components is that it is more convenient to push the threaded ring to rotate by pressing against the convex blocks on the outer surface of the threaded ring with the hand and it is not easy to slip.

[0016] Preferably, reinforcing strips are fixedly connected to both sides of the inner wall of the groove ring, and the reinforcing strips are located outside the connection between the rubber sheet and the inner wall of the groove ring.

[0017] The effect achieved by the above components is that by setting the reinforcing strips, the connection between the rubber sheet and the groove ring can be strengthened, and it is possible to avoid the connection between the rubber sheet and the groove ring from breaking as much as possible.

[0018] Preferably, a convenient device is provided at the top end of the instrument body. The convenient device includes two sliding rods and a grip rod. A T-shaped groove is formed at the top end of the instrument body. Both ends of the sliding rod slide on both sides of the bottom end of the inner wall of the T-shaped groove. The grip rod is located between the two sliding rods. The sliding rod and the grip rod are connected by a rotating rod. Both ends of the rotating rod are rotatably connected to the outer surfaces of the grip rod and the sliding rod respectively.

[0019] The effect achieved by the above components is that when carrying the instrument body to move, the grip rod can be held on the outer surface and pulled upward, so that the two sliding rods on both sides of the grip rod slide in the same direction on the inner wall of the T-shaped groove, and the rotating rod rotates on the outer surfaces of the grip rod and the sliding rod respectively, making the rotating rod approach perpendicular to the instrument body. Holding the outer surface of the grip rod can facilitate carrying the instrument body. When using or storing the instrument body, push the grip rod downward to make the sliding rods on both sides slide in the direction away from each other on the inner wall of the T-shaped groove, so that the outer surface of the grip rod fits as closely as possible to the T-shaped groove, and the grip rod is received in the T-shaped groove for easy storage.

[0020] Preferably, several convex strips are provided on the outer surface of the grip rod, and the convex strips are made of rubber and are circumferentially distributed on the outer surface of the grip rod.

[0021] The effect achieved by the above components is that it is more convenient to hold the grip rod by holding the rubber convex strips on the outer surface of the grip rod and it is not easy to slip.

[0022] Compared with the prior art, the advantages and positive effects of the present invention are as follows:

[0023] 1. In the present invention, by providing a fastening device, when the gas delivery pipe is inserted into the inside of the connecting pipe, the connection between the gas delivery pipe and the connecting pipe is strengthened by pressing the pressing block at the bottom end of the round rod against the outside of the gas delivery pipe, as much as possible to avoid the loosening and falling off of the connection between the gas delivery pipe and the connecting pipe, and the rubber sheet inside the groove ring expands outwards to further seal the outside of the connection between the gas delivery pipe and the connecting pipe, improving the stability and tightness during the use after connecting the gas delivery pipe and the connecting pipe.

[0024] 2. In the present invention, when moving the instrument body, one can hold the outer surface of the grip rod and pull it upwards, so that the two sliding rods on both sides of the grip rod slide in the same direction along the inner wall of the T-shaped groove, and the rotating rods rotate on the outer surfaces of the grip rod and the sliding rods respectively, making the rotating rods approach perpendicular to the instrument body. Holding the outer surface of the grip rod can facilitate the carrying of the instrument body. When storing the instrument body, push the grip rod downwards so that the sliding rods on both sides slide in the direction away from each other along the inner wall of the T-shaped groove, making the outer surface of the grip rod fit as closely as possible to the T-shaped groove and retracting the grip rod into the T-shaped groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a three-dimensional structural schematic diagram of a high-precision cold mirror dew point meter proposed by the present invention;

[0026] Figure 2 is a three-dimensional structural schematic diagram of the instrument body in a high-precision cold mirror dew point meter proposed by the present invention;

[0027] Figure 3 is a partial enlarged three-dimensional structural schematic diagram of A in a high-precision cold mirror dew point meter proposed by the present invention Figure 2 ;

[0028] Figure 4 is a partial sectional three-dimensional structural schematic diagram of the groove ring in a high-precision cold mirror dew point meter proposed by the present invention;

[0029] Figure 5 is a partial sectional three-dimensional structural schematic diagram of the groove ring in a high-precision cold mirror dew point meter proposed by the present invention;

[0030] Figure 6 is a three-dimensional structural schematic diagram of the round rod in a high-precision cold mirror dew point meter proposed by the present invention;

[0031] Figure 7 is a three-dimensional structural schematic diagram of the cylinder in a high-precision cold mirror dew point meter proposed by the present invention.

[0032] Legend: 1. Instrument body; 2. Fastening device; 3. Convenience device; 4. Connecting pipe; 5. Display screen; 21. Rectangular block; 22. Round rod; 23. Pressing block; 24. First spring; 25. Positioning block; 26. Threaded ring; 27. Tapered block; 28. Grooved ring; 29. Rubber sheet; 210. Cylinder; 211. Piston rod; 212. Second spring; 213. Ball block; 214. Protrusion; 215. Positioning groove; 216. Reinforcing strip; 31. T-shaped groove; 32. Slide bar; 33. Rotating rod; 34. Holding rod; 35. Rib. Detailed implementation mode

[0033] Example 1, as Figure 1-2 shown, a high-precision cold mirror dew point meter includes an instrument body 1. A connecting pipe 4 and a display screen 5 are arranged on one side of the instrument body 1. A number of control buttons are arranged on the outer surface of the instrument body 1 near the display screen 5. The connecting pipe 4 is composed of an outer sleeve and an inner intake pipe. The connecting pipe 4 is used to connect with a gas delivery pipe. The display screen 5 is used to display detection data. A fastening device 2 that can reinforce the connection between the gas delivery pipe and the connecting pipe 4 is arranged on the outer surface of the instrument body 1 near the connecting pipe 4.

[0034] Refer to Figure 1-6As shown in the figure, in this embodiment: The fastening device 2 includes a rectangular block 21 and a positioning block 25. The rectangular block 21 and the positioning block 25 are fixed on the outer surface of the instrument body 1 above the connecting pipe 4. A round rod 22 is slidably connected to the inner wall of the rectangular block 21. The bottom end of the round rod 22 is fixedly connected to a pressing block 23. The pressing block 23 is located inside the sleeve of the connecting pipe 4. A first spring 24 is arranged on the outer surface of the round rod 22. The first spring 24 is located between the rectangular block 21 and the connecting pipe 4 and is used to limit the position of the round rod 22. A threaded ring 26 is threadedly connected to the outer surface of the round rod 22. The threaded ring 26 is located between the positioning block 25 and the rectangular block 21. A groove ring 28 is fixed to the end of the connecting pipe 4 away from the instrument body 1. A rubber sheet 29 is fixedly connected to the inner wall of the groove ring 28. A cylinder 210 is fixedly connected to the side of the instrument body 1 close to the round rod 22. One side of the cylinder 210 is connected to the groove ring 28 through a pipeline. A piston rod 211 is slidably connected to the inner wall of the cylinder 210. A second spring 212 is arranged on the outer surface of the piston rod 211. The second spring 212 is located between the piston rod 211 and the cylinder 210 to limit the position of the piston rod 211 on one side of the cylinder 210. The end of the piston rod 211 away from the cylinder 210 is fixedly connected to a spherical block 213. A conical block 27 is fixed to the top end of the round rod 22. The spherical block 213 is located on the inclined surface side of the conical block 27. By setting the pressing block 23, when using the cold mirror dew point instrument, insert the gas delivery pipe into the sleeve of the connecting pipe 4. When one end of the gas delivery pipe enters the inside of the connecting pipe 4, it will push the pressing block 23 to make the round rod 22 slide upward on the inner wall of the rectangular block 21 and compress the first spring 24. Through the thrust of the first spring 24, the bottom end of the pressing block 23 presses on the outer surface of the gas delivery pipe. When the round rod 22 moves upward, the inclined surface side of the conical block 27 will move on one side of the spherical block 213, causing the spherical block 213 to move away from the conical block 27 on the surface of the conical block 27, pushing the piston rod 211 to slide on the inner wall of the cylinder 210 and compress the second spring 212. Through the piston rod 211, the air inside the cylinder 210 is pushed into the groove ring 28 through the pipeline, increasing the air pressure inside the groove ring 28 to make the rubber sheet 29 expand outward, so that the expanded rubber sheet 29 fits on the outside of the gas delivery pipe, further sealing the outside of the connection between the gas delivery pipe and the connecting pipe 4. Finally, rotate the threaded ring 26 on the outer surface of the round rod 22 to make the threaded ring 26 move upward on the outer surface of the round rod 22, so that the top end of the threaded ring 26 abuts against the bottom surface of the positioning block 25 to fix the positions of the round rod 22 and the pressing block 23, so that the round rod 22 will not move upward. Adjust the detection parameters inside the instrument body 1 through the touch button on one side of the instrument body 1, so that the gas enters the inside of the instrument body 1 through the delivery pipeline, and operate the micro-refrigerator inside the instrument body 1 to reduce the gas temperature. When the temperature is slightly lower than the dew point, the water vapor in the gas will condense into dew, causing the light irradiated on the mirror surface to produce diffuse reflection, and the photosensitive device will generate a change in the electrical signal. The detection circuit sends the change in the electrical signal and the temperature data to the control system for analysis, calculates the dew point temperature value of the measured gas through the intelligent algorithm and displays it on the display screen 5.After use, rotate the threaded ring 26 away from the bottom end of the positioning block 25, and pull out the gas delivery pipe outward. When the first spring 24 returns to its original state, it will push the round rod 22 and the pressing block 23 downward to return to their original positions. When the second spring 212 on the outer side of the piston rod 211 returns to its original state, it will push the piston rod 211 and the ball block 213 back to their original positions and make the excess air inside the groove ring 28 return to the inside of the cylinder 210. By setting the fastening device 2, when the gas delivery pipe is inserted into the connecting pipe 4, by pressing the pressing block 23 at the bottom end of the round rod 22 against the outer side of the gas delivery pipe, the connection between the gas delivery pipe and the connecting pipe 4 is strengthened, as much as possible to avoid the loosening and falling off of the connection between the gas delivery pipe and the connecting pipe 4, and make the rubber sheet 29 inside the groove ring 28 expand outward to further seal the outside of the connection between the gas delivery pipe and the connecting pipe 4, improving the stability and sealing performance when using after connecting the gas delivery pipe and the connecting pipe 4.

[0035] Referring to Figure 2-7 As shown, in this embodiment: the outer edge of the bottom end of the pressing block 23 facing outward is arc-shaped. By setting the outer edge of the bottom end of the pressing block 23 facing outward to be arc-shaped, it is easier to push the pressing block 23 upward when the gas delivery pipe is inserted into the connecting pipe 4. A positioning groove 215 is opened at the top end of the conical block 27, and the ball block 213 moves inside the positioning groove 215. When the round rod 22 pushes the conical block 27 upward, the ball block 213 will move inside the positioning groove 215. The position of the ball block 213 on one side of the conical block 27 can be restricted through the positioning groove 215, as much as possible to avoid the left and right shaking and angular deviation when the ball block 213 moves on one side of the conical block 27.

[0036] Referring to Figure 2-7 As shown, in this embodiment: there are several convex blocks 214 on the outer surface of the threaded ring 26, and the convex blocks 214 are circumferentially distributed on the outer surface of the threaded ring 26. Pressing against the convex blocks 214 on the outer surface of the threaded ring 26 by hand can more conveniently push the threaded ring 26 to rotate and is not easy to slip. Reinforcing strips 216 are fixedly connected to both sides of the inner wall of the groove ring 28, and the reinforcing strips 216 are located outside the connection between the rubber sheet 29 and the inner wall of the groove ring 28. By setting the reinforcing strips 216, the connection between the rubber sheet 29 and the groove ring 28 can be strengthened, as much as possible to avoid the breakage of the connection between the rubber sheet 29 and the groove ring 28.

[0037] Referring to Figure 1 、 Figure 2 、 Figure 4 and Figure 5As shown in the figure, in this embodiment: A convenient device 3 is provided at the top of the instrument body 1. The convenient device 3 includes two sliding rods 32 and a grip rod 34. A T-shaped groove 31 is formed at the top of the instrument body 1. Both ends of the sliding rod 32 slide on both sides of the bottom end of the inner wall of the T-shaped groove 31. The grip rod 34 is located between the two sliding rods 32. The sliding rod 32 and the grip rod 34 are connected by a rotating rod 33. Both ends of the rotating rod 33 are rotatably connected to the outer surfaces of the grip rod 34 and the sliding rod 32 respectively. When carrying the instrument body 1, one can hold the outer surface of the grip rod 34 and pull the grip rod 34 upward, so that the two sliding rods 32 on both sides of the grip rod 34 slide in the same direction on the inner wall of the T-shaped groove 31, and the rotating rod 33 rotates on the outer surfaces of the grip rod 34 and the sliding rod 32 respectively, making the rotating rod 33 approach perpendicular to the instrument body 1. Holding the outer surface of the grip rod 34 can facilitate the carrying of the instrument body 1. When using or storing the instrument body 1, push the grip rod 34 downward to make the sliding rods 32 on both sides slide in the direction away from each other on the inner wall of the T-shaped groove 31, so that the outer surface of the grip rod 34 fits as closely as possible to the T-shaped groove 31, and the grip rod 34 is received at the T-shaped groove 31 for convenient storage. A number of convex strips 35 are provided on the outer surface of the grip rod 34. The convex strips 35 are made of rubber and are circumferentially distributed on the outer surface of the grip rod 34. Holding the rubber convex strips 35 on the outer surface of the grip rod 34 can more conveniently hold the grip rod 34 and is not easy to slip.

[0038] Working principle: When using a cold mirror dew point meter, insert the gas delivery pipe into the sleeve inside the connecting pipe 4. When one end of the gas delivery pipe enters the inside of the connecting pipe 4, it will push the pressing block 23, causing the round rod 22 to slide upward along the inner wall of the rectangular block 21 and compress the first spring 24. Through the thrust of the first spring 24, the bottom end of the pressing block 23 presses against the outer surface of the gas delivery pipe. When the round rod 22 moves upward, the inclined side of the conical block 27 will move on one side of the spherical block 213, causing the spherical block 213 to move away from the conical block 27 on the surface of the conical block 27, pushing the piston rod 211 to slide along the inner wall of the cylinder 210 and compress the second spring 212. Through the piston rod 211, the air inside the cylinder 210 is pushed through the pipeline into the groove ring 28, increasing the air pressure inside the groove ring 28 and causing the rubber sheet 29 to expand outward, making the expanded rubber sheet 29 fit against the outside of the gas delivery pipe, further sealing the outside of the connection between the gas delivery pipe and the connecting pipe 4. Finally, rotate the threaded ring 26 on the outer surface of the round rod 22 to make the threaded ring 26 move upward on the outer surface of the round rod 22, so that the top end of the threaded ring 26 abuts against the bottom surface of the positioning block 25, fixing the positions of the round rod 22 and the pressing block 23 and preventing the round rod 22 from moving upward. Adjust the detection parameters inside the instrument body 1 through the touch button on one side of the instrument body 1, so that the gas enters the instrument body 1 through the delivery pipeline. Operate the micro-refrigerator inside the instrument body 1 to lower the gas temperature. When the temperature is slightly lower than the dew point, the water vapor in the gas will condense into dew, causing the light irradiated on the mirror surface to undergo diffuse reflection, and the photosensitive device generates a change in the electrical signal. The detection circuit sends the change in the electrical signal and the temperature data to the control system for analysis. Through the intelligent algorithm, the dew point temperature value of the measured gas is calculated and displayed on the display screen 5. After use, rotate the threaded ring 26 away from the bottom end of the positioning block 25 and pull out the gas delivery pipe outward. The first spring 24 returns to its original state and will push the round rod 22 and the pressing block 23 downward to return to their original positions. The second spring 212 outside the piston rod 211 returns to its original state and will push the piston rod 211 and the spherical block 213 back to their original positions and make the excess air inside the groove ring 28 return to the inside of the cylinder 210. When carrying the instrument body 1, you can hold the outer surface of the grip rod 34 and pull the grip rod 34 upward, causing the two sliding rods 32 on both sides of the grip rod 34 to slide in the same direction along the inner wall of the T-shaped groove 31, and causing the rotating rods 33 to rotate on the outer surfaces of the grip rod 34 and the sliding rods 32 respectively, making the rotating rods 33 approach perpendicular to the instrument body 1. Holding the outer surface of the grip rod 34 can facilitate the carrying of the instrument body 1. When storing the instrument body 1, push the grip rod 34 downward to make the sliding rods 32 on both sides slide in the direction away from each other along the inner wall of the T-shaped groove 31, making the outer surface of the grip rod 34 fit as closely as possible to the T-shaped groove 31, and retract the grip rod 34 into the T-shaped groove 31.

[0039] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention in other forms. Any person skilled in the relevant art may use the technical content disclosed above to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical solution content of the present invention, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention still fall within the protection scope of the technical solution of the present invention. In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood through specific situations.

Claims

1. A high-precision cold mirror dew point meter, comprising an instrument body (1), characterized in that: On one side of the instrument body (1), a connecting pipe (4) and a display screen (5) are provided. On the outer surface of the instrument body (1) near the display screen (5), several control buttons are provided. The connecting pipe (4) consists of an outer sleeve and an inner air inlet pipe. The connecting pipe (4) is used to connect with a gas delivery pipe, and the display screen (5) is used to display detection data. On the outer surface of the instrument body (1) near the connecting pipe (4), a fastening device (2) is provided which can reinforce the connection between the gas delivery pipe and the connecting pipe (4).

2. The high-precision cold mirror dew point meter according to claim 1, wherein: The fastening device (2) includes: A rectangular block (21) and a positioning block (25). The rectangular block (21) and the positioning block (25) are fixed on the outer surface of the instrument body (1) above the connecting pipe (4). A round rod (22) is slidably connected to the inner wall of the rectangular block (21). The bottom end of the round rod (22) is fixedly connected to a pressing block (23). The pressing block (23) is located inside the sleeve of the connecting pipe (4). A first spring (24) is arranged on the outer surface of the round rod (22). The first spring (24) is located between the rectangular block (21) and the connecting pipe (4) to limit the position of the round rod (22). A threaded ring (26) is threadedly connected to the outer surface of the round rod (22). The threaded ring (26) is located between the positioning block (25) and the rectangular block (21); A groove ring (28) and a conical block (27). The groove ring (28) is fixed at the end of the connecting pipe (4) away from the instrument body (1). A rubber sheet (29) is fixedly connected to the inner wall of the groove ring (28). A cylinder (210) is fixedly connected to the side of the instrument body (1) near the round rod (22). One side of the cylinder (210) is connected to the groove ring (28) through a pipeline. A piston rod (211) is slidably connected to the inner wall of the cylinder (210). A second spring (212) is arranged on the outer surface of the piston rod (211). The second spring (212) is located between the piston rod (211) and the cylinder (210) to limit the position of the piston rod (211) on one side of the cylinder (210). The end of the piston rod (211) away from the cylinder (210) is fixedly connected to a spherical block (213). The conical block (27) is fixed at the top end of the round rod (22). The spherical block (213) is located on the inclined side of the conical block (27).

3. The high-precision cold mirror dew point meter according to claim 2, characterized in that: The outer edge of the bottom end of the pressing block (23) facing outward is arc-shaped.

4. The high-precision cold mirror dew point meter according to claim 3, characterized in that: A positioning groove (215) is opened at the top end of the conical block (27). The spherical block (213) moves inside the positioning groove (215).

5. The high-precision cold mirror dew point meter according to claim 4, characterized in that: Several convex blocks (214) are arranged on the outer surface of the threaded ring (26). The convex blocks (214) are circumferentially distributed on the outer surface of the threaded ring (26).

6. The high-precision cold mirror dew point meter according to claim 5, wherein: Reinforcing strips (216) are fixedly connected to both sides of the inner wall of the groove ring (28). The reinforcing strips (216) are located outside the connection between the rubber sheet (29) and the inner wall of the groove ring (28).

7. The high-precision cold mirror dew point meter according to claim 6, wherein: A convenient device (3) is provided at the top end of the instrument body (1). The convenient device (3) includes two sliding rods (32) and a grip rod (34). A T-shaped groove (31) is opened at the top end of the instrument body (1). Both ends of the sliding rod (32) slide on both sides of the bottom end of the inner wall of the T-shaped groove (31).

8. The high-precision cold mirror dew point meter according to claim 7, characterized in that: The grip rod (34) is located between two sliding rods (32). The sliding rod (32) and the grip rod (34) are connected by a rotating rod (33). The two ends of the rotating rod (33) are respectively rotatably connected to the outer surfaces of the grip rod (34) and the sliding rod (32).

9. The high-precision cold mirror dew point meter according to claim 8, characterized in that: A plurality of convex strips (35) are arranged on the outer surface of the grip rod (34). The convex strips (35) are made of rubber and are circumferentially distributed on the outer surface of the grip rod (34).

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