Device and method for measuring nitrous oxide in gas phase

Abstract

The invention belongs to the field of nitrous oxide testing, and particularly relates to a device and method for measuring nitrous oxide in a gas phase. The first treatment box and the second treatment box are fixedly mounted at the top of the mounting seat; the condensing coil is arranged in the first treatment box and is used for allowing the cooling liquid to pass through; the gas inlet is formed in one side of the first treatment box and is used for gas to enter; the heating coil is arranged in the second treatment box and used for allowing condensed gas to pass through, and one end of the heating coil is fixedly communicated with one side of the first treatment box; the gas chromatograph is fixedly mounted at the top of the mounting seat, and the other end of the heating coil is connected with the gas chromatograph; the cooling liquid conveying mechanism is arranged at the top of the first treatment box; water vapor in gas can be treated, the temperature of the gas can be maintained at 48-50 DEG C, the test accuracy is improved, water drops attached to the surface of the condensing coil can be scraped off, and the situation that the subsequent condensing effect is affected by the water drops is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of nitrous oxide testing, and in particular to a device and a method for measuring nitrous oxide in a gas phase. Background Art

[0002] Nitrous oxide is highly stable and can remain in the atmosphere for a very long time. It can be transported to the stratosphere, causing ozone layer destruction and ozone hole formation, exposing humans and other organisms to the radiation of solar ultraviolet rays, causing damage to human skin, eyes, and immune system. Therefore, the test of nitrous oxide in the gas phase is particularly important.

[0003] In the prior art, the test of nitrous oxide in the gas phase is mostly completed by gas chromatograph, but the water vapor in the gas phase is not easy to remove, which affects the accuracy of the test. Therefore, we propose a device and method for measuring nitrous oxide in the gas phase to solve the above problem. Summary of the invention

[0004] The purpose of the present invention is to solve the disadvantage in the prior art that water vapor in the gas phase is difficult to remove, which affects the accuracy of the test, and to propose a device and method for measuring nitrous oxide in the gas phase.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A device for determining nitrous oxide in a gas phase, comprising:

[0007] Mounting seat;

[0008] The first processing box and the second processing box are both fixedly mounted on the top of the mounting seat;

[0009] A condensing coil, disposed in the first processing box, for the cooling liquid to pass through;

[0010] An air inlet, provided at one side of the first processing box, for gas to enter;

[0011] A heating coil is arranged in the second processing box and is used for the condensed gas to pass through, and one end of the heating coil is fixedly connected to one side of the first processing box;

[0012] The gas chromatograph is fixedly mounted on the top of the mounting base, and the other end of the heating coil is connected to the gas chromatograph;

[0013] A coolant delivery mechanism, disposed on the top of the first processing box, for delivering coolant to the condensing coil;

[0014] The scraping mechanism is arranged on the outside of the condensing coil and is used to scrape off the water droplets attached to the outside of the condensing coil;

[0015] A drain pipe, provided at the bottom of the first processing box, for draining condensed water;

[0016] A first valve is provided on the drain pipe and is used to control the opening and closing of the drain pipe;

[0017] A plurality of electric heating tubes are arranged on the top inner wall and the bottom inner wall of the second processing box and are used to heat the water in the second processing box. A water inlet is arranged on the top of the second processing box.

[0018] Preferably, the coolant delivery mechanism includes a mounting plate fixedly mounted on the top of the first processing box, a coolant tank is fixedly mounted on one side of the mounting plate, a liquid replenishing port is provided on the top of the coolant tank, a water pump is fixedly mounted on the bottom of the coolant tank, a water outlet of the water pump is fixedly connected to one end of the condensing coil, and the other end of the condensing coil is fixedly connected to the coolant tank.

[0019] Preferably, a mounting hole is provided at the bottom of the coolant tank, a refrigeration fin is fixedly installed in the mounting hole, a bearing plate is fixedly installed at one side of the coolant tank, and a fan is fixedly installed at the bottom of the bearing plate.

[0020] Preferably, a first motor is fixedly mounted on one side of the coolant tank, an output shaft of the first motor extends into the coolant tank and is fixedly mounted with a rotating rod, and a stirring blade is fixedly mounted on the outer side of the rotating rod.

[0021] Preferably, the scraping mechanism comprises a plurality of annular blocks slidably sleeved on the outside of the condensing coil, and a same connecting block is connected between two adjacent annular blocks.

[0022] Preferably, two connection blocks among the plurality of connection blocks are provided with rotation holes at the top, mounting shafts are rotatably mounted in the two rotation holes, and a plurality of blades are fixedly mounted on the outer sides of the mounting shafts.

[0023] Preferably, both connecting blocks are provided with mounting cavities, and the bottom ends of the two mounting shafts extend into the two mounting cavities and are fixedly mounted with the second bevel gears.

[0024] Preferably, a transverse hole is opened on one side of the two connecting blocks, and a transverse rod is rotatably installed in the two transverse holes. A first bevel gear is fixedly installed at one end of the two transverse rods, and the first bevel gear is meshed with the second bevel gear. Two racks are fixedly installed in the processing box, and a gear is fixedly installed at the other end of the two transverse rods, and the gear is meshed with the rack.

[0025] Preferably, a second motor is fixedly mounted on the bottom of the first processing box, a screw is fixedly mounted on the output shaft of the second motor, the screw is threadedly connected to a connecting block, and a support plate is fixedly mounted on one side of the first processing box.

[0026] The present invention also proposes a method for using a device for determining nitrous oxide in a gas phase, comprising the following steps:

[0027] S1. When in use, the gas to be tested enters the first processing box from the air inlet, and the gas contacts the condensing coil to condense the gas, so that the water vapor in the gas condenses into water droplets, and the gas enters the heating coil;

[0028] S2, heating the water in the second treatment box by an electric heating tube, so that the heating coil heats the passing gas, so that the gas is maintained at 48-50° C., and then the gas enters the gas chromatograph, and the nitrous oxide content in the gas is measured by the gas chromatograph;

[0029] S3, driving the screw to rotate by the second motor, so that the connecting block connected to the screw thread moves downward, so that the multiple ring blocks move downward to scrape off the water droplets attached to the surface of the condensing coil;

[0030] S4. The movement of the connecting block will cause the gear to roll on the rack, thereby driving the cross bar to rotate, the cross bar drives the first bevel gear to rotate, the first bevel gear drives the second bevel gear to rotate, the second bevel gear drives the installation shaft to rotate, the installation shaft drives the blades to rotate, stirring the gas so that the gas can fully contact the condensing coil.

[0031] In the present invention, the beneficial effects of the device and method for determining nitrous oxide in the gas phase are:

[0032] The gas to be tested enters the first processing box from the air inlet, and the gas contacts the condensing coil to condense the gas, so that the water vapor in the gas condenses into water droplets, and the gas enters the heating coil;

[0033] The water in the second treatment box is heated by an electric heating tube, and then the heating coil heats the passing gas, so that the gas is maintained at 48-50°C, and then the gas enters the gas chromatograph, and the nitrous oxide content in the gas is measured by the gas chromatograph;

[0034] The second motor drives the screw to rotate, so that the connection block connected with the screw thread moves downward, so that the multiple ring blocks move downward to scrape off the water droplets attached to the surface of the condensing coil;

[0035] The movement of the connecting block causes the gear to roll on the rack, which in turn drives the crossbar to rotate, the crossbar drives the first bevel gear to rotate, the first bevel gear drives the second bevel gear to rotate, the second bevel gear drives the mounting shaft to rotate, the mounting shaft drives the blades to rotate, stirring the gas so that the gas can fully contact the condensing coil;

[0036] The present invention can process water vapor in the gas, so that the gas can be maintained at 48-50° C., thereby improving the accuracy of the test. At the same time, water droplets attached to the surface of the condensation coil can be scraped off to prevent the water droplets from affecting the subsequent condensation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 A schematic diagram of the structure of a device for measuring nitrous oxide in the gas phase proposed by the present invention;

[0038] Figure 2 A partial side structural schematic diagram of a device for measuring nitrous oxide in a gas phase proposed by the present invention;

[0039] Figure 3 A device for measuring nitrous oxide in gas phase proposed by the present invention Figure 1 A schematic diagram of the enlarged structure of part A;

[0040] Figure 4 A device for measuring nitrous oxide in gas phase proposed by the present invention Figure 2 A schematic diagram of the enlarged structure of part B;

[0041] Figure 5 A device for measuring nitrous oxide in gas phase proposed by the present invention Figure 1 Schematic diagram of the enlarged structure of part C.

[0042] In the figure: 1, the first treatment box; 2, the second treatment box; 3, the mounting seat; 4, the air inlet; 5, the condensing coil; 6, the heating coil; 7, the electric heating tube; 8, the gas chromatograph; 9, the mounting plate; 10, the coolant tank; 11, the water pump; 12, the refrigeration plate; 13, the ring block; 14, the connecting block; 15, the screw; 16, the second motor; 17, the mounting shaft; 18, the blade; 19, the mounting cavity; 20, the second bevel gear; 21, the cross bar; 22, the first bevel gear; 23, the gear; 24, the rack; 25, the first motor; 26, the rotating rod; 27, the stirring blade; 28, the bearing plate; 29, the fan; 30, the temperature sensor; 31, the shunt pipe; 32, the second valve; 33, the third valve; 34, the drain pipe; 35, the first valve; 36, the support plate; 37, the cross hole; 38, the rotating hole; 39, the fixing hole; 40, the mounting hole. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0044] Embodiment 1

[0045] Reference Figure 1-Figure 5 , a device for determining nitrous oxide in the gas phase, comprising:

[0046] Mounting seat 3;

[0047] The first processing box 1 and the second processing box 2 are both fixedly mounted on the top of the mounting base 3;

[0048] Condensing coil 5, arranged in the first processing box 1, for cooling liquid to pass through;

[0049] An air inlet 4 is provided at one side of the first processing box 1 for gas to enter;

[0050] The heating coil 6 is arranged in the second processing box 2 and is used for the condensed gas to pass through. One end of the heating coil 6 is fixedly connected to one side of the first processing box 1.

[0051] A gas chromatograph 8 is fixedly mounted on the top of the mounting base 3, and the other end of the heating coil 6 is connected to the gas chromatograph 8;

[0052] A coolant delivery mechanism is provided at the top of the first processing box 1 and is used to deliver coolant to the condensing coil 5;

[0053] The scraping mechanism is arranged on the outside of the condensing coil 5 and is used to scrape off the water droplets attached to the outside of the condensing coil 5;

[0054] A drain pipe 34 is provided at the bottom of the first processing box 1 and is used to discharge condensed water;

[0055] A first valve 35 is provided on the drain pipe 34 and is used to control the opening and closing of the drain pipe 34;

[0056] A plurality of electric heating tubes 7 are arranged on the top inner wall and the bottom inner wall of the second treatment box 2 for heating the water in the second treatment box 2 . A water inlet is arranged on the top of the second treatment box 2 .

[0057] In this embodiment, the coolant delivery mechanism includes a mounting plate 9 fixedly mounted on the top of the first processing box 1, a coolant tank 10 is fixedly mounted on one side of the mounting plate 9, a liquid replenishing port is provided on the top of the coolant tank 10, a water pump 11 is fixedly mounted on the bottom of the coolant tank 10, a water outlet of the water pump 11 is fixedly connected to one end of the condensing coil 5, and the other end of the condensing coil 5 is fixedly connected to the coolant tank 10.

[0058] In this embodiment, a mounting hole 40 is formed at the bottom of the coolant tank 10 , a cooling fin 12 is fixedly mounted in the mounting hole 40 , a supporting plate 28 is fixedly mounted on one side of the coolant tank 10 , and a fan 29 is fixedly mounted at the bottom of the supporting plate 28 .

[0059] In this embodiment, a first motor 25 is fixedly mounted on one side of the coolant tank 10 , the output shaft of the first motor 25 extends into the coolant tank 10 and is fixedly mounted with a rotating rod 26 , and a stirring blade 27 is fixedly mounted on the outer side of the rotating rod 26 .

[0060] In this embodiment, the liquid scraping mechanism includes a plurality of annular blocks 13 slidably sleeved on the outside of the condensing coil 5 , and a common connecting block 14 is connected between two adjacent annular blocks 13 .

[0061] In this embodiment, two of the plurality of connection blocks 14 have rotation holes 38 at their tops, mounting shafts 17 are rotatably mounted in the two rotation holes 38 , and a plurality of blades 18 are fixedly mounted on the outer sides of the mounting shafts 17 .

[0062] In this embodiment, the two connection blocks 14 are each provided with a mounting cavity 19 , and the bottom ends of the two mounting shafts 17 extend into the two mounting cavities 19 and are fixedly mounted with a second bevel gear 20 .

[0063] In this embodiment, a transverse hole 37 is provided on one side of the two connecting blocks 14, and a cross bar 21 is rotatably installed in the two transverse holes 37. A first bevel gear 22 is fixedly installed at one end of the two cross bars 21, and the first bevel gear 22 is meshed with the second bevel gear 20. Two racks 24 are fixedly installed in the processing box 1, and a gear 23 is fixedly installed at the other end of the two cross bars 21, and the gear 23 is meshed with the rack 24.

[0064] In this embodiment, a second motor 16 is fixedly installed at the bottom of the first processing box 1, a screw 15 is fixedly installed on the output shaft of the second motor 16, and the screw 15 is threadedly connected to a connecting block 14. A support plate 36 is fixedly installed on one side of the first processing box 1.

[0065] This embodiment also proposes a method for using the device for measuring nitrous oxide in the gas phase, comprising the following steps:

[0066] S1. When in use, the gas to be tested enters the first processing box 1 from the air inlet 4, and the gas contacts the condensing coil 5 to condense the gas so that the water vapor in the gas condenses into water droplets, and the gas enters the heating coil 6;

[0067] S2, heating the water in the second treatment box 2 by the electric heating tube 7, so that the heating coil 6 heats the passing gas, so that the gas is maintained at 48° C., and then the gas enters the gas chromatograph 8, and the nitrous oxide content in the gas is measured by the gas chromatograph 8;

[0068] S3, the second motor 16 drives the screw 15 to rotate, so that the connecting block 14 threadedly connected to the screw 15 moves downward, so that the multiple annular blocks 13 move downward to scrape off the water droplets attached to the surface of the condensing coil 5;

[0069] S4. The movement of the connecting block 14 causes the gear 23 to roll on the rack 24, thereby driving the cross bar 21 to rotate, the cross bar 21 drives the first bevel gear 22 to rotate, the first bevel gear 22 drives the second bevel gear 20 to rotate, the second bevel gear 20 drives the installation shaft 17 to rotate, and the installation shaft 17 drives the blades 18 to rotate, stirring the gas so that the gas can fully contact the condensing coil 5.

[0070] Embodiment 2

[0071] This embodiment also proposes a method for using the device for measuring nitrous oxide in the gas phase, comprising the following steps:

[0072] S1. When in use, the gas to be tested enters the first processing box 1 from the air inlet 4, and the gas contacts the condensing coil 5 to condense the gas so that the water vapor in the gas condenses into water droplets, and the gas enters the heating coil 6;

[0073] S2, heating the water in the second treatment box 2 by the electric heating tube 7, so that the heating coil 6 heats the passing gas, so that the gas is maintained at 50°C (in the process of testing nitrous oxide, temperature control is very important for the accuracy and safety of the experimental results), and then the gas enters the gas chromatograph 8, and the nitrous oxide content in the gas is measured by the gas chromatograph 8;

[0074] S3, the second motor 16 drives the screw 15 to rotate, so that the connecting block 14 threadedly connected to the screw 15 moves downward, so that the multiple annular blocks 13 move downward to scrape off the water droplets attached to the surface of the condensing coil 5;

[0075] S4. The movement of the connecting block 14 causes the gear 23 to roll on the rack 24, thereby driving the cross bar 21 to rotate, the cross bar 21 drives the first bevel gear 22 to rotate, the first bevel gear 22 drives the second bevel gear 20 to rotate, the second bevel gear 20 drives the installation shaft 17 to rotate, and the installation shaft 17 drives the blades 18 to rotate, stirring the gas so that the gas can fully contact the condensing coil 5.

[0076] Embodiment 3

[0077] The difference between this embodiment and the first embodiment is that a fixing hole 39 is opened on one side of the second processing box 2, and a temperature sensor 30 is fixedly installed in the fixing hole 39 for monitoring the water temperature. A shunt pipe 31 is fixedly connected to the heating coil 6, and a second valve 32 is provided on the shunt pipe 31. A third valve 33 is provided on the heating coil 6. When there is no need to transport gas to the gas chromatograph 8, the second valve 32 is opened, the third valve 33 is closed, and the gas is discharged from the shunt pipe 31.

[0078] The rest is the same as that of the first embodiment.

[0079] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A device for determining nitrous oxide in the gas phase, characterized in that: include: Mounting seat (3); The first processing box (1) and the second processing box (2) are both fixedly mounted on the top of the mounting base (3); A condensing coil (5) is disposed in the first processing box (1) and is used for cooling liquid to pass through; An air inlet (4) is provided on one side of the first processing box (1) and is used for gas to enter; A heating coil (6) is arranged in the second processing box (2) and is used for the condensed gas to pass through, and one end of the heating coil (6) is fixedly connected to one side of the first processing box (1); A gas chromatograph (8) is fixedly mounted on the top of the mounting base (3), and the other end of the heating coil (6) is connected to the gas chromatograph (8); A cooling liquid conveying mechanism is arranged on the top of the first processing box (1) and is used to convey cooling liquid into the condensing coil (5); A liquid scraping mechanism is arranged on the outside of the condensing coil (5) and is used to scrape off water droplets attached to the outside of the condensing coil (5); A drain pipe (34) is provided at the bottom of the first processing box (1) and is used to drain condensed water; A first valve (35) is provided on the drain pipe (34) and is used to control the opening and closing of the drain pipe (34); A plurality of electric heating pipes (7) are arranged on the top inner wall and the bottom inner wall of the second processing box (2) and are used to heat the water in the second processing box (2). A water inlet is arranged on the top of the second processing box (2).

2. A device for determining nitrous oxide in the gas phase according to claim 1, characterized in that: The coolant delivery mechanism comprises a mounting plate (9) fixedly mounted on the top of the first processing box (1), a coolant tank (10) fixedly mounted on one side of the mounting plate (9), a liquid replenishing port being provided on the top of the coolant tank (10), a water pump (11) fixedly mounted on the bottom of the coolant tank (10), a water outlet of the water pump (11) being fixedly connected to one end of the condensing coil (5), and the other end of the condensing coil (5) being fixedly connected to the coolant tank (10).

3. A device for determining nitrous oxide in the gas phase according to claim 2, characterized in that: The bottom of the coolant tank (10) is provided with a mounting hole (40), a refrigeration plate (12) is fixedly mounted in the mounting hole (40), a supporting plate (28) is fixedly mounted on one side of the coolant tank (10), and a fan (29) is fixedly mounted on the bottom of the supporting plate (28).

4. A device for determining nitrous oxide in the gas phase according to claim 3, characterized in that: A first motor (25) is fixedly mounted on one side of the coolant tank (10); an output shaft of the first motor (25) extends into the coolant tank (10) and is fixedly mounted with a rotating rod (26); and a stirring blade (27) is fixedly mounted on the outer side of the rotating rod (26).

5. A device for determining nitrous oxide in the gas phase according to claim 4, characterized in that: The liquid scraping mechanism comprises a plurality of annular blocks (13) slidably sleeved on the outside of the condensing coil (5), and a same connecting block (14) is connected between two adjacent annular blocks (13).

6. A device for determining nitrous oxide in the gas phase according to claim 5, characterized in that: Two of the plurality of connection blocks (14) are provided with a rotation hole (38) at the top, a mounting shaft (17) is rotatably mounted in the two rotation holes (38), and a plurality of blades (18) are fixedly mounted on the outer side of the mounting shaft (17).

7. A device for determining nitrous oxide in the gas phase according to claim 6, characterized in that: The two connection blocks (14) are each provided with an installation cavity (19), and the bottom ends of the two installation shafts (17) extend into the two installation cavities (19) and are fixedly mounted with a second bevel gear (20).

8. A device for determining nitrous oxide in gas phase according to claim 7, characterized in that: One side of the two connecting blocks (14) is provided with a transverse hole (37), and a transverse rod (21) is rotatably mounted in the two transverse holes (37). One end of the two transverse rods (21) is fixedly mounted with a first bevel gear (22), and the first bevel gear (22) is meshed with the second bevel gear (20). Two racks (24) are fixedly mounted in the processing box (1), and the other ends of the two transverse rods (21) are fixedly mounted with a gear (23), and the gear (23) is meshed with the rack (24).

9. A device for determining nitrous oxide in the gas phase according to claim 8, characterized in that: A second motor (16) is fixedly mounted on the bottom of the first processing box (1), a screw rod (15) is fixedly mounted on the output shaft of the second motor (16), the screw rod (15) is threadedly connected to a connecting block (14), and a support plate (36) is fixedly mounted on one side of the first processing box (1).

10. A method for using a device for measuring nitrous oxide in a gas phase, wherein the device for measuring nitrous oxide in a gas phase is the device for measuring nitrous oxide in a gas phase according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. When in use, the gas to be tested enters the first processing box (1) from the air inlet (4), the gas contacts the condensing coil (5), condenses the gas, and makes the water vapor in the gas condense into water droplets, and the gas enters the heating coil (6); S2, heating the water in the second treatment box (2) by means of the electric heating tube (7), thereby causing the heating coil (6) to heat the passing gas, so that the gas is maintained at 48-50° C., and then the gas enters the gas chromatograph (8), and the nitrous oxide content in the gas is measured by the gas chromatograph (8); S3, driving the screw (15) to rotate by means of the second motor (16), so that the connection block (14) threadedly connected to the screw (15) moves downward, so that the plurality of annular blocks (13) move downward, and scrape off water droplets attached to the surface of the condensing coil (5); S4. The movement of the connecting block (14) causes the gear (23) to roll on the rack (24), thereby driving the cross bar (21) to rotate, the cross bar (21) drives the first bevel gear (22) to rotate, the first bevel gear (22) drives the second bevel gear (20) to rotate, the second bevel gear (20) drives the installation shaft (17) to rotate, the installation shaft (17) drives the blade (18) to rotate, and the gas is stirred so that the gas can fully contact the condensing coil (5).

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