A dew point meter calibration device

Abstract

The embodiment of the application discloses a dew point meter calibration device, which comprises a humidity generator, a calibration tube and a detection tube. The dew point meter calibration device disclosed by the application can adjust the humidity of the humidity by the humidity generator, adjust the humidity temperature and humidity pressure of the calibration tube by the first temperature regulator and the first pressure adjusting element respectively, adjust the humidity temperature and humidity pressure of the detection tube by the second temperature regulator and the second pressure adjusting element respectively, and realize that the humidity temperature and humidity pressure of the dew point meter calibration device can be adjusted, the humidity temperature and humidity pressure of the calibration tube can be adjusted separately, and the humidity temperature and humidity pressure of the detection tube can be adjusted separately, so that the adjustment range of the humidity temperature and humidity pressure can cover the requirements of the humidity humidity, humidity temperature and humidity pressure of the dew point meter calibration of the high-temperature gas cooled reactor.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of dew point meter, in particular to a dew point meter calibration device. BACKGROUND

[0002] The dew point meter for monitoring the humidity of the primary loop medium of a high temperature gas cooled reactor needs to be calibrated under certain conditions.

[0003] In the prior art, the humidity temperature and humidity pressure range of the dew point meter calibration cannot completely cover the calibration requirements of the dew point meter for the high temperature gas cooled reactor, which affects the calibration results of the dew point meter. SUMMARY

[0004] The present application provides a dew point meter calibration device to make the humidity temperature and humidity pressure of the dew point meter calibration device cover the calibration requirements of the dew point meter.

[0005] In order to achieve the above-mentioned purpose, the present application provides a dew point meter calibration device, comprising:

[0006] A humidity generator for preparing humidity of different humidity;

[0007] A calibration pipe in communication with the humidity generator, wherein a standard dew point meter, a first temperature regulator, a first pressure gauge and a first pressure regulating member are arranged on the calibration pipe, the first pressure regulating member is used to adjust the humidity pressure of the calibration pipe, the first pressure gauge is used to measure the humidity pressure of the calibration pipe, and the first temperature regulator is used to adjust the humidity temperature of the calibration pipe;

[0008] A detection pipe in communication with the humidity generator and in parallel with the calibration pipe, wherein a dew point meter to be calibrated, a second temperature regulator, a second pressure gauge and a second pressure regulating member are arranged on the detection pipe, the second pressure regulating member is used to adjust the humidity pressure of the detection pipe, the second pressure gauge is used to measure the humidity pressure of the detection pipe, and the second temperature regulator is used to adjust the humidity temperature of the detection pipe.

[0009] Preferably, in the above-mentioned dew point meter calibration device, a third pressure gauge is arranged upstream of the communication position of the detection pipe and the calibration pipe, and the third pressure gauge is used to measure the humidity pressure of the humidity discharged by the humidity generator.

[0010] Preferably, in the above-mentioned dew point meter calibration device, the first pressure regulating member is a first back pressure valve.

[0011] Preferably, in the above-mentioned dew point meter calibration device, the first temperature regulator is a first heater.

[0012] Preferably, in the above-mentioned dew point meter calibration device, the second pressure regulating member comprises a first pressure reducing valve and a second back pressure valve.

[0013] Preferably, in the dew point meter calibration device, the first pressure reducing valve is located near the communication position of the detection tube and the calibration tube, the first back pressure valve is located downstream of the second pressure gauge, the second temperature regulator is located between the first pressure reducing valve and the dew point meter to be calibrated, and the second pressure gauge is located between the dew point meter to be calibrated and the first back pressure valve.

[0014] Preferably, in the dew point meter calibration device, the second temperature regulator is a second heater.

[0015] Preferably, in the dew point meter calibration device, the humidity generator comprises:

[0016] a gas supply pipe for providing dry gas;

[0017] a saturated humidity pipe in communication with the gas supply pipe, wherein a dry gas source flow controller and a saturator are arranged on the saturated humidity pipe;

[0018] a first-stage dilution pipe in communication with the gas supply pipe and in parallel with the saturated humidity pipe, wherein a first-stage air inlet flow controller and an air outlet flow controller are arranged on the first-stage dilution pipe, and the communication position of the saturated humidity pipe and the first-stage dilution pipe is located between the first-stage air inlet flow controller and the air outlet flow controller;

[0019] a second-stage dilution pipe in communication with the gas supply pipe and in parallel with the saturated humidity pipe, wherein a second-stage air inlet flow controller is arranged on the second-stage dilution pipe, the communication position of the second-stage dilution pipe and the first-stage dilution pipe is located downstream of the second-stage air inlet flow controller, and the air outlet end of the second-stage dilution pipe is in communication with the calibration tube and the detection tube.

[0020] Preferably, in the dew point meter calibration device, a pressure regulating valve is arranged on the gas supply pipe.

[0021] The dew point meter calibration device disclosed in the present application comprises a humidity generator, a calibration tube and a detection tube. The dew point meter calibration device disclosed in the present application can adjust the humidity temperature and the humidity pressure of the dew point meter calibration device, and can separately adjust the humidity temperature and the humidity pressure of the calibration tube and the detection tube, so that the adjustment range of the humidity temperature and the humidity pressure can cover the requirements of the humidity humidity, the humidity temperature and the humidity pressure of the dew point meter calibration of the high temperature gas cooled reactor. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the accompanying drawings in the following description only represent some examples or embodiments of the present application, and for those skilled in the art, other drawings can be obtained from the provided drawings without any creative effort, and the present application can also be applied to other similar scenarios according to the provided drawings. Unless it is obvious from the language environment or otherwise stated, the same reference numbers in the drawings represent the same structures or operations.

[0023] Figure 1 Figure 1 is a structural schematic diagram of a dew point meter calibration device of the present application.

[0024] Wherein:

[0025] 1, gas supply pipe, 2, pressure regulating valve, 3, saturated wet gas pipe, 4, dry gas source flow controller, 5, saturator, 6, first stage dilution pipe, 7, first stage inlet flow controller, 8, outlet flow controller, 9, second stage dilution pipe, 10, second stage inlet flow controller, 11, detection pipe, 12, calibration pipe, 13, standard dew point meter, 14, dew point meter to be calibrated, 15, first pressure reducing valve, 16, second pressure gauge, 17, second back pressure valve, 18, third pressure gauge, 19, first pressure regulating member. DETAILED DESCRIPTION

[0026] The present application will be further described below in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the related application, and not to limit the application. The described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without any creative effort are within the scope of protection of the present application.

[0027] It should be noted that, for the convenience of description, only the parts related to the application are shown in the drawings. The embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0028] It should be understood that the "system", "device", "unit" and / or "module" used in the present application is a method for distinguishing different components, elements, parts, portions or assemblies at different levels. However, if other words can achieve the same purpose, the word can be replaced by other expressions.

[0029] As shown in the present application and claims, unless otherwise clearly indicated by context, "one," "an," "a" and / or "the" are not to be construed as specific reference unless two or more are clearly indicated by context. Generally, the term "comprises" and "comprising" are used in the sense of "including" and "including at least" and are not used in the sense of "consisting of" or "consisting essentially of." The term "consisting essentially of" is used in the sense of "including at least" and excludes only that which is not named in the specification.

[0030] In the description of the embodiments of the present application, " / " means or, for example, A / B can mean A or B, "and / or" in the present application is only a description of the relationship between the associated objects, which means that there can be three relationships, for example, A and / or B, which means that there are three cases of A alone, A and B together, and B alone. In addition, in the description of the embodiments of the present application, "multiple" means two or more than two.

[0031] Hereinafter, the terms "first" and "second" are used only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more of the features.

[0032] Flowcharts are used in the present application to illustrate the operations performed by the system according to the embodiments of the present application. It should be understood that the preceding or subsequent operations are not necessarily performed in sequence. On the contrary, each step can be processed in reverse order or simultaneously. Meanwhile, other operations can be added to these processes, or one or more steps of operation can be removed from these processes.

[0033] Please refer to Figure 1 .

[0034] Some embodiments of the present application disclose a dew point meter calibration device, comprising a humidity generator, a calibration tube 12 and a detection tube 11.

[0035] The humidity generator is used to prepare humidity of different humidity, the calibration tube 12 and the detection tube 11 are communicated with the humidity generator, and the calibration tube 12 and the detection tube 11 are connected in parallel. A standard dew point meter 13 is arranged on the calibration tube 12, and a dew point meter to be calibrated 14 is arranged on the detection tube 11.

[0036] As shown in Figure 1 , the calibration tube 12 is further provided with a first temperature regulator, a first pressure gauge and a first pressure adjusting member 19, the first temperature regulator is used to adjust the humidity temperature of the calibration tube 12, the first pressure adjusting member 19 is used to adjust the humidity pressure of the calibration tube 12, and the first pressure gauge is used to measure the humidity pressure of the calibration tube 12;

[0037] The detection tube 11 is also equipped with a second temperature regulator, a second pressure gauge 16, and a second pressure regulator. The second temperature regulator is used to regulate the moisture temperature of the detection tube 11, the second pressure regulator is used to regulate the moisture pressure of the detection tube 11, and the second pressure gauge 16 is used to measure the moisture pressure of the calibration tube 12.

[0038] The dew point meter calibration device disclosed in this application adjusts the humidity of the air through a humidity generator, adjusts the humidity temperature and pressure of the calibration tube 12 through a first temperature regulator and a first pressure regulator 19, and adjusts the humidity temperature and pressure of the detection tube 11 through a second temperature regulator and a second pressure regulator, respectively. This allows the humidity temperature and pressure of the calibration tube 12 and the detection tube 11 of the dew point meter calibration device to be adjustable, and the humidity temperature and pressure of the calibration tube and the detection tube can be adjusted separately. This ensures that the adjustment range of the humidity temperature and pressure can cover the humidity, humidity temperature, and humidity pressure requirements for dew point meter calibration of high-temperature gas-cooled reactors.

[0039] The dew point meter calibration device disclosed in this embodiment can calibrate the dew point meter under normal temperature and pressure conditions, or it can calibrate the dew point meter under set temperature and set pressure conditions.

[0040] The calibration tube 12 and the detection tube 11 are connected to the same humidity generator, and the humidity of the air in the calibration tube 12 and the detection tube 11 is the same. During calibration, the first pressure regulator 19 adjusts the humidity pressure of the calibration tube 12, and the second pressure regulator adjusts the humidity pressure of the detection tube 11, until the humidity pressures measured by the first pressure gauge and the second pressure gauge 16 are equal. At the same time, the humidity temperatures of the calibration tube 12 and the detection tube 11 are adjusted by the first temperature regulator and the second temperature regulator, respectively, until the humidity temperatures of the calibration tube 12 and the detection tube 11 are equal. At this time, the dew point meter 14 to be calibrated can be calibrated.

[0041] This application provides temperature regulators and pressure regulators on both the calibration tube 12 and the detection tube 11. The moisture temperature and pressure of the calibration tube 12 and the detection tube 11 can be adjusted separately, improving the flexibility of variable control and thus further expanding the calibration range of the dew point meter. At the same time, it reduces the influence of external environment on the moisture temperature and pressure of the calibration tube 12 and the detection tube 11, improving the reliability of the calibration results.

[0042] The dew point meter calibration device disclosed in this application can calibrate the dew point meter 14 to be calibrated under different pressure, temperature and humidity conditions, making up for the shortcomings of metrology departments and existing standard humidity generating devices in that they cannot test, calibrate and calibrate humidity sensing elements such as dew point meters under actual engineering operation conditions.

[0043] The pressure of the high-temperature gas cooled reactor changes in the range of 0-7 MPa during the debugging and operation period, and needs to be tested under low pressure of 1-8 bar and high pressure of 0.8-7 MPa respectively, and two humidity generators need to be built for low pressure and high pressure respectively. Under low pressure, the humidity generator uses compressed air, high-purity nitrogen or helium as dry gas source, and under high pressure, the humidity generator uses high-purity nitrogen or helium as dry gas source.

[0044] Preferably, the first pressure gauge is arranged on the calibration tube 12 and located downstream of the communication position of the calibration tube 12 and the detection tube 11, for directly detecting the humidity pressure of the calibration tube 12.

[0045] As shown in Figure 1 , a third pressure gauge 18 is arranged upstream of the communication position of the detection tube 11 and the calibration tube 12, and the third pressure gauge 18 measures the pressure of the humidity gas discharged by the humidity generator.

[0046] The third pressure gauge 18 can detect the dew point meter calibration device, and judge whether the dew point meter calibration device leaks. If the difference between the humidity pressure measured by the third pressure gauge 18 and the sum of the pressures of the first pressure gauge and the second pressure gauge 16 exceeds the error range, it is determined that the dew point meter calibration device leaks.

[0047] The installation sequence of the first temperature regulator, the first pressure regulating member 19 and the first pressure gauge on the calibration tube 12 is selected by a person skilled in the art according to actual needs, and preferably, the first pressure gauge is arranged near the standard dew point meter 13, and the first temperature regulator and the first pressure regulating member 19 are located upstream of the first pressure gauge and the positions can be interchanged.

[0048] In some embodiments of the present application, the first pressure regulating member 19 is a first back pressure valve, and the first temperature regulator is a first heater, and preferably, the first heater is a heating tape.

[0049] The second pressure regulating member includes a first pressure reducing valve 15 and a second back pressure valve 17, which regulate the humidity pressure of the detection tube 11.

[0050] As shown in Figure 1 , the first pressure reducing valve 15 is arranged near the communication position of the detection tube 11 and the calibration tube 12, to reduce the humidity pressure entering the detection tube 11 to the required pressure; and the second back pressure valve 17 is arranged at the end of the detection tube 11.

[0051] As shown in Figure 1 , the dew point meter to be calibrated 14 is located upstream of the second pressure gauge 16, and the dew point meter to be calibrated 14 is located between the first pressure reducing valve 15 and the second back pressure valve 17.

[0052] Preferably, the second temperature regulator is located between the first pressure reducing valve 15 and the dew point meter 14 to be calibrated.

[0053] In some embodiments of the present application, the second temperature regulator is a second heater, preferably, the second heater is a heating tape.

[0054] As shown in the figure, the humidity generator comprises a gas supply pipe 1, a saturated humidity pipe 3, a first-stage dilution pipe 6 and a second-stage dilution pipe 9. Figure 1 The gas supply pipe 1 is used to supply dry gas, specifically, the gas inlet end of the gas supply pipe can be in communication with a dry gas source;

[0055] The gas inlet end of the saturated humidity pipe 3 is in communication with the gas outlet end of the gas supply pipe 1, and the saturated humidity pipe 3 is provided with a dry gas source flow controller 4 and a saturator 5, the dry gas source flow controller is used to control the flow of dry gas supplied to the saturator 5, and the saturator 5 is used to form saturated humidity from the supplied dry gas;

[0056] The gas inlet end of the first-stage dilution pipe 6 is in communication with the gas outlet end of the gas supply pipe 1, and the first-stage dilution pipe 6 is in parallel with the saturated humidity pipe 3, the first-stage dilution pipe 6 is used to perform first-stage dilution on the saturated humidity output by the saturator 5, the first-stage dilution pipe 6 is provided with a first-stage gas inlet flow controller 7 and an outlet flow controller 8, the first-stage dilution pipe 6 is in communication with the gas outlet end of the saturated humidity pipe 3, and the communication position of the first-stage dilution pipe 6 and the saturated humidity pipe 3 is between the first-stage gas inlet flow controller 7 and the outlet flow controller 8, at this position, the first-stage gas inlet flow controller 7 controls the flow of dry gas supplied to the first-stage dilution pipe 6 through the gas supply pipe, and the outlet flow controller 8 controls the flow of first-stage dilution humidity after the dry gas is first-stage diluted with the saturated humidity;

[0057] The gas inlet end of the second-stage dilution pipe 9 is in communication with the gas outlet end of the gas supply pipe 1 and in parallel with the saturated humidity pipe 3, the second-stage dilution pipe 9 is provided with a second-stage gas inlet flow controller 10, the second-stage gas inlet flow controller 10 is used to control the flow of dry gas supplied to the second-stage dilution pipe 9 through the gas supply pipe, the pipe segment of the second-stage dilution pipe 9 downstream of the second-stage gas inlet flow controller 10 is in communication with the gas outlet end of the first-stage dilution pipe 6, that is, the communication position of the second-stage dilution pipe 9 and the first-stage dilution pipe 6 is downstream of the second-stage gas inlet flow controller 10, the second-stage dilution pipe 9 is used to perform second-stage dilution on the first-stage dilution humidity, and the gas outlet end of the second-stage dilution pipe 9 is in communication with the calibration pipe 12 and the detection pipe 11.

[0058] The humidity generator disclosed in the present application can perform two-stage dilution on the saturated humidity, so that the humidity of the humidity is flexible and can cover the requirements of the high-temperature gas cooled reactor on the humidity of the humidity.

[0059] The humidity generator disclosed in the present application can perform two-stage dilution on the saturated humidity, so that the humidity of the humidity is flexible and can cover the requirements of the high-temperature gas cooled reactor on the humidity of the humidity.

[0060] In the embodiment, the humidity generator can adjust the humidity range of moisture to -70~60℃dp, and the stability is not less than ±2℃dp.

[0061] The dry gas is generally high-purity nitrogen, high-purity ammonia or compressed air.

[0062] Specifically, under the low pressure condition, the humidity generator uses compressed air, high-purity nitrogen or helium as the dry gas source, and under the high pressure condition, the humidity generator uses high-purity nitrogen or helium as the dry gas source.

[0063] Since the gas from the dry gas source has a high pressure, the pressure of the gas from the dry gas source needs to be reduced to a constant pressure by the pressure regulating valve 2.

[0064] Preferably, the pressure regulating valve 2 is a second pressure reducing valve.

[0065] The above description is merely preferred embodiments of the present application and the technical principles used, and is not intended to limit the present application. The present application can have various changes and modifications for those skilled in the art. The scope of the application involved in the present application is not limited to the technical solutions formed by the specific combination of the above technical features, and should also cover other technical solutions formed by any combination of the above technical features or equivalent features without departing from the above application concept. For example, the above features are replaced with the technical features disclosed in the present application (but not limited to) having similar functions to form technical solutions.

Claims

1. A dew point meter calibration device, characterized by, include: Humidity generator, used to produce moisture with different humidity levels; A calibration tube (12) is connected to the humidity generator. A standard dew point meter (13), a first temperature regulator, a first pressure gauge, and a first pressure regulator (19) are provided on the calibration tube (12). The first pressure regulator (19) is used to adjust the moisture pressure of the calibration tube (12). The first pressure gauge is used to measure the moisture pressure of the calibration tube (12). The first temperature regulator is used to adjust the moisture temperature of the calibration tube (12). The detection tube (11) is connected to the humidity generator and in parallel with the calibration tube (12). The detection tube (11) is equipped with a dew point meter (14) to be calibrated, a second temperature regulator, a second pressure gauge (16) and a second pressure regulator. The second pressure regulator is used to adjust the moisture pressure of the detection tube (11). The second pressure gauge (16) is used to measure the moisture pressure of the detection tube (11). The second temperature regulator is used to adjust the moisture temperature of the detection tube (11). The humidity generator includes: Gas supply pipe (1) is used to supply dry gas; A saturated humid air pipe (3) is connected to the air supply pipe (1), and a dry air source flow controller (4) and a saturator (5) are provided on the saturated humid air pipe (3). The first-stage dilution pipe (6) is connected to the air supply pipe (1) and in parallel with the saturated humid air pipe (3). The first-stage dilution pipe (6) is equipped with a first-stage inlet flow controller (7) and an outlet flow controller (8). The connection position between the saturated humid air pipe (3) and the first-stage dilution pipe (6) is located between the first-stage inlet flow controller (7) and the outlet flow controller (8). The second-stage dilution tube (9) is connected to the air supply tube (1) and in parallel with the saturated humid air tube (3). A second-stage air intake flow controller (10) is provided on the second-stage dilution tube (9). The connection position between the second-stage dilution tube (9) and the first-stage dilution tube (6) is located downstream of the second-stage air intake flow controller (10). The outlet end of the second-stage dilution tube (9) is connected to the calibration tube (12) and the detection tube (11).

2. The dew point meter calibration device of claim 1, wherein, A third pressure gauge (18) is provided upstream of the connection point between the detection tube (11) and the calibration tube (12). The third pressure gauge (18) is used to measure the moisture pressure of the moisture discharged from the humidity generator.

3. The dew point meter calibration device of claim 1, wherein, The first pressure regulating element (19) is the first back pressure valve.

4. The dew point meter calibration device of claim 1, wherein, The first temperature regulator is the first heater.

5. The dew point meter calibration device of claim 1, wherein, The second pressure regulating component includes a first pressure reducing valve (15) and a second back pressure valve (17).

6. The dew point meter calibration device of claim 5, wherein, The first pressure reducing valve (15) is located near the connection between the detection tube (11) and the calibration tube (12), the second back pressure valve (17) is located downstream of the second pressure gauge (16), the second temperature regulator is located between the first pressure reducing valve (15) and the dew point meter (14) to be calibrated, and the second pressure gauge (16) is located between the dew point meter (14) to be calibrated and the second back pressure valve (17).

7. The dew point meter calibration device of claim 1, wherein, The second temperature regulator is a second heater.

8. The dew point meter calibration device of claim 1, wherein, The air supply pipe (1) is provided with a pressure regulating valve (2).

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