CN212621440U - High-temperature valve closed type detection test device based on gas heating system - Google Patents
High-temperature valve closed type detection test device based on gas heating system Download PDFInfo
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- CN212621440U CN212621440U CN202021635373.3U CN202021635373U CN212621440U CN 212621440 U CN212621440 U CN 212621440U CN 202021635373 U CN202021635373 U CN 202021635373U CN 212621440 U CN212621440 U CN 212621440U
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Abstract
The utility model discloses a high temperature valve closed type detection test device based on gas heating system, including the heating furnace that is used for holding experimental work piece, nitrogen cylinder group, air supply ooff valve, the booster pump, the relief pressure valve, pipeline thermometer and leak hunting device, be equipped with upstream side head and the downstream side head of being connected with experimental work piece in the heating furnace, be equipped with a plurality of thermometers that are used for measuring experimental work piece temperature on the upstream side head, upstream side manometer, pipeline ooff valve, upstream side relief valve, be equipped with the downstream side manometer on the downstream side head, downstream side relief valve and leak hunting pipeline ooff valve. The valve is tested in the aspects of shell strength test, sealing performance test, opening and closing action test and the like so as to verify various performances of the valve in a high-temperature and high-pressure environment.
Description
Technical Field
The utility model belongs to the technical field of the valve detects, especially, relate to a high temperature valve closed type detection test device based on gas heating system.
Background
In a fluid delivery system, a valve is an indispensable control component, and mainly has the functions of regulation, flow guiding, backflow prevention, cut-off, flow splitting and the like, and the valve is widely applied in the industrial and civil fields. The high-temperature valve is a type commonly used in valves, and comprises a high-temperature ball valve, a high-temperature butterfly valve, a high-temperature throttle valve, a high-temperature pressure reducing valve and the like.
The performance of the high-temperature valve is inconvenient to detect, so that a set of equipment is required to detect multiple performances of the high-temperature valve.
Disclosure of Invention
In order to overcome the weak point of above-mentioned prior art, the utility model provides a based on gas heating system high temperature valve closed type test device tests the valve in the aspect of from casing strength test, sealing performance test, switch action test etc to verify each item performance of valve under high temperature high pressure environment.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a high-temperature valve closed detection test device based on a gas heating system comprises a heating furnace for containing a test workpiece, a nitrogen cylinder group, a gas source switch valve, a booster pump, a pressure reducing valve, a pipeline temperature meter and a leak detection device, wherein an upstream side end socket and a downstream side end socket which are connected with the test workpiece are arranged in the heating furnace, a plurality of thermometers for measuring the temperature of the test workpiece, an upstream side pressure gauge, a pipeline switch valve and an upstream side pressure relief valve are arranged on the upstream side end socket, a downstream side pressure gauge, a downstream side pressure relief valve and a leak detection pipeline switch valve are arranged on the downstream side end socket, the leak detection pipeline switch valve is connected to the leak detection device, the upstream side pressure relief valve, the pipeline switch valve, the downstream side pressure relief valve and the leak detection pipeline switch valve are all arranged outside the heating furnace, a workpiece execution mechanism for controlling the opening degree of the test workpiece is also arranged on the heating furnace, the outlet of the air source switch valve is connected to the inlet of the booster pump, the outlet of the booster pump is connected to the inlet of the pressure reducing valve, and the outlet of the pressure reducing valve is connected to the inlet of the pipeline switch valve.
In the above technical solution, the temperature gauge of the upstream side head includes an upstream side intracavity temperature gauge and an upstream side casing temperature gauge.
In the technical scheme, an air source pressure gauge is arranged on a connecting pipeline of the nitrogen gas cylinder group and the air source switch valve.
In the above technical scheme, a pressure boost pressure gauge is arranged on a pipeline between the booster pump and the pressure reducing valve.
In the technical scheme, a pressure reducing pressure gauge, a gas flow recording gauge and a pipeline thermometer are arranged on a pipeline where the pressure reducing valve is connected with the pipeline switch valve.
In the above technical scheme, a pipeline pressure relief valve is arranged on a pipeline connecting the pressure reducing valve and the pipeline switching valve.
In the technical scheme, a probe for monitoring the view screen is arranged in the heating furnace and is connected to a view screen monitoring system.
The utility model has the advantages that: placing the valve in a heating furnace, heating with the heating furnace, and injecting pressurized N2The inner cavity of the valve is at a specific pressure and temperature, the valve is tested in the aspects of shell strength test, sealing performance test, opening and closing action test and the like, so that various performances of the valve in a high-temperature and high-pressure environment are verified, and the valve is simple in structure, convenient in test process and high in test feasibility.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a temperature time chart of the shell strength test.
Fig. 3 is a temperature time curve table of the sealing test.
Fig. 4 is a temperature-time curve chart of the switching operation test.
Wherein: 1. the device comprises a nitrogen gas cylinder group, 2, a gas source pressure gauge, 3, a gas source switch valve, 4, a booster pump, 5, a booster pressure gauge, 6, a pressure reducing valve, 7, a pressure reducing pressure gauge, 8, a gas flow recording gauge, 9, a pipeline temperature gauge, 10, a pipeline pressure relief valve, 11, an upstream side inner cavity temperature gauge, 12, an upstream side shell temperature gauge, 13, a pipeline switch valve, 14, an upstream side pressure gauge, 15, an upstream side pressure relief valve, 16, a downstream side pressure relief valve, 17, a video monitoring system, 18, a leakage detection pipeline switch valve, 19, a downstream side pressure gauge, 20, a leakage detection device, 21, a heating furnace, 22, an upstream side end socket, 23, a downstream side end socket, 24, a workpiece execution mechanism and 25 test workpieces.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, a high temperature valve closed detection test device based on a gas heating system comprises a heating furnace 21 for containing a test workpiece 25, a nitrogen gas cylinder group 1, a gas source switch valve 3, a booster pump 3, a pressure reducing valve 6, a pipeline temperature gauge 9 and a leakage detection device 20, wherein an upstream side end enclosure 22 and a downstream side end enclosure 23 connected with the test workpiece are arranged in the heating furnace 21, a plurality of temperature gauges for measuring the temperature of the test workpiece, an upstream side pressure gauge 14, a pipeline switch valve 13 and an upstream side pressure relief valve 15 are arranged on the upstream side end enclosure 22, a downstream side pressure gauge 19, a downstream side pressure relief valve 16 and a leakage detection pipeline switch valve 18 are arranged on the downstream side end enclosure 23, the leakage detection pipeline switch valve 18 is connected to the leakage detection device 20, the upstream side pressure relief valve 15, the pipeline switch valve 13, the downstream side pressure relief valve 16 and the leakage detection pipeline switch valve 18 are all arranged outside the heating furnace, a workpiece execution mechanism 24 for controlling the opening degree, the outlet of the nitrogen cylinder group 1 is connected to the inlet of an air source switch valve 3, the outlet of the air source switch valve 3 is connected to the inlet of a booster pump 4, the outlet of the booster pump 4 is connected to the inlet of a pressure reducing valve 6, and the outlet of the pressure reducing valve 6 is connected to the inlet of a pipeline switch valve 13.
In the above technical solution, the temperature meters of the upstream side head 22 include an upstream side intracavity temperature meter 11 and an upstream side casing temperature meter 12.
In the technical scheme, an air source pressure gauge 2 is arranged on a connecting pipeline of the nitrogen gas cylinder group 1 and the air source switch valve 3.
In the technical scheme, a pressure boosting pressure gauge 5 is arranged on a pipeline between the booster pump 4 and the pressure reducing valve 6.
In the technical scheme, a pressure reducing pressure gauge 7, a gas flow recording gauge 8 and a pipeline thermometer 9 are arranged on a pipeline connecting the pressure reducing valve 6 and the pipeline switch valve 13.
In the above technical scheme, a pipeline relief valve 10 is arranged on a pipeline connecting the pressure reducing valve 6 and the pipeline switching valve 13.
In the above technical solution, a probe for view screen monitoring is arranged in the heating furnace 21, and the probe is connected to the view screen monitoring system 17.
1.1 Shell Strength test
1) Installing a tested workpiece in a testing device, opening a valve plate to be in a full-open state, and connecting temperature sensors at various positions;
2) checking each connection joint of the test pipeline to ensure correct connection and good sealing;
3) closing all control valves in the test pipeline;
4) opening an upstream side pressure release valve (15) and a downstream side pressure release valve (16), and then sequentially opening a pipeline switch valve (13), a pressure release valve (6) and an air source switch valve (2) to fill nitrogen into the test workpiece, wherein the amount of the filled gas is VAt a time。
V＝1.5(V1+V2+V3+V4)
In the formula VAt a timeThe volume dm of the first nitrogen charge3
1.5-safety factor
V1-total volume dm of test pipeline3
V2-volume dm of upstream side head3
V3Downstream side head volume dm3
V4-test workpiece volume dm3
5) Closing the air source switch valve (2), the upstream side pressure release valve (15) and the downstream side pressure release valve (16) in sequence, and recording the reading of the upstream side pressure gauge (14);
6) opening the gas source switch valve (2) and the booster pump (4), and filling nitrogen into the test workpiece again, wherein the filling gas amount is VTwo timesRecording the upstream pressure gauge (14) reading;
Vtwo times＝VHigh temperature-VAt a time/1.5
In the formula VTwo times-a second nitrogen filling volume dm3
VHigh temperature-the volume dm of nitrogen required to reach the test pressure at high temperature3
VAt a time-product dm of a second nitrogen filling3
VHigh temperature＝nRT/P1-P2
In the formula VHigh temperature-the volume dm of nitrogen required to reach the test pressure at high temperature3
n-amount of gaseous substance, nitrogen value mol
R-constant
T-test temperature K
P1-test pressure kPa
P2-pressure of the inflation gas kPa (pressure gauge reading)
7) Closing the air source switch valve (2), the booster pump (4) and the pipeline switch valve (13), and opening the pipeline pressure relief valve (10);
8) and closing the natural gas furnace door, starting a heating system of the natural gas furnace, and heating by stages. In each heating stage, the pressure change condition of an upstream side pressure gauge (14) is observed and recorded;
a) the first stage is as follows: the temperature is between room temperature and 300 ℃, and the heating rate is not more than 150 ℃/h.
b) And a second stage: the temperature is 300-500 ℃, and the heating rate is not more than 100 ℃/h.
c) And a third stage: 500 ℃ to the test temperature, at a heating rate not exceeding 50 ℃/h.
The temperature time curve is shown in figure 2;
9) and (4) checking the temperature reading in the upstream side cavity of the test workpiece, and confirming that the temperature is within the test temperature range. Otherwise, adjusting the heating system of the natural gas heating furnace to make the natural gas heating furnace within the test temperature;
10) the upstream pressure gauge reading is checked and recorded for the test pressure. Otherwise, fine adjustment of the pressure value by adding a small amount of nitrogen to ensure that the pressure value is within the test pressure range;
note that: when the pressure exceeds the test pressure range, the upstream side pressure release valve (15) and the downstream side pressure release valve (16) need to be opened for emergency pressure release;
11) keeping the temperature and stabilizing the pressure for 300 seconds (shortest), and observing and recording the change condition of the upstream pressure gauge (14);
12) closing a heating system of the natural gas furnace, opening an upstream side pressure release valve (15) and a downstream side pressure release valve (16) to release pressure in stages, and closing the pressure release valves for 5 minutes when the pressure is reduced by 0.5Mpa by an upstream side pressure gauge (14);
13) looking up a shell thermometer (12) on the upstream side of the test workpiece, and opening the furnace door when the reading of the thermometer is reduced to below 200 ℃;
14) checking the reading of an upstream side pressure gauge (14) to be 0Mpa at the moment, checking an environment temperature (furnace temperature) gauge, and detaching test devices such as an upstream side end socket, a downstream side end socket, a temperature sensor and the like when the environment temperature is reduced to room temperature;
checking the test workpiece in all aspects, and recording whether deformation or other abnormal phenomena exist or not, and ending the shell test process;
1.2 seal test
1) Installing a tested workpiece in a testing device, opening a valve plate to be in a full-open state, and connecting temperature sensors at various positions;
2) checking each connection joint of the test pipeline to ensure correct connection and good sealing;
3) closing all control valves in the test pipeline;
4) opening an upstream side pressure release valve (15) and a downstream side pressure release valve (16), and then sequentially opening a pipeline switch valve (13), a pressure release valve (6) and an air source switch valve (2) to fill nitrogen into the test workpiece, wherein the amount of the filled gas is VAt a time。
V＝1.5(V1+V2+V3+V4)
In the formula VAt a timeThe volume dm of the first nitrogen charge3
1.5-safety factor
V1-total volume dm of test pipeline3
V2-volume dm of upstream side head3
V3Downstream side head volume dm3
V4-test workpiece volume dm3
5) Closing the air source switch valve (2), the upstream side pressure release valve (15) and the downstream side pressure release valve (16) in sequence, and recording the reading of the upstream side pressure gauge (14);
6) opening the gas source switch valve (2) and the booster pump (4), and filling nitrogen into the test workpiece again, wherein the filling gas amount is VTwo timesRecording the upstream pressure gauge (14) reading;
Vtwo times＝VHigh temperature-VAt a time/1.5
In the formula VTwo times-a second nitrogen filling volume dm3
VHigh temperature-the volume dm of nitrogen required to reach the test pressure at high temperature3
VAt a time-product dm of a second nitrogen filling3
VHigh temperature＝nRT/P1-P2
In the formula VHigh temperature-the volume dm of nitrogen required to reach the test pressure at high temperature3
n-amount of gaseous substance, nitrogen value mol
R-constant
T-test temperature K
P1-test pressure kPa
P2-pressure of the inflation gas kPa (pressure gauge reading)
7) Closing the air source switch valve (2), the booster pump (4) and the pipeline switch valve (13), and opening the pipeline pressure relief valve (10);
8) and closing the natural gas furnace door, starting a heating system of the natural gas furnace, and heating by stages. In each heating stage, the pressure change condition of an upstream side pressure gauge (14) is observed and recorded;
d) the first stage is as follows: the temperature is between room temperature and 300 ℃, and the heating rate is not more than 150 ℃/h.
e) And a second stage: the temperature is 300-500 ℃, and the heating rate is not more than 100 ℃/h.
f) And a third stage: 500 ℃ to the test temperature, at a heating rate not exceeding 50 ℃/h.
The temperature test curve is shown in figure 3;
9) and (4) checking the temperature reading in the upstream side cavity of the test workpiece, and confirming that the temperature is within the test temperature range. Otherwise, adjusting the heating system of the natural gas heating furnace to make the natural gas heating furnace within the test temperature;
10) the upstream pressure gauge reading is checked and recorded for the test pressure. Otherwise, fine adjustment of the pressure value by adding a small amount of nitrogen to ensure that the pressure value is within the test pressure range;
note that: when the pressure exceeds the test pressure range, the upstream side pressure release valve (15) and the downstream side pressure release valve (16) need to be opened for emergency pressure release;
11) the downstream side relief valve (16) is opened to release the downstream side pressure in stages. The downstream side pressure gauge (16) closes the pressure release valve for 5 minutes every time the pressure drops by 0.5Mpa, and closes the downstream side pressure release valve (16) when the downstream side pressure gauge (16) shows 0 Mpa;
12) and opening a leakage detection pipeline switch valve (18), keeping the temperature and stabilizing the pressure for 120 seconds in the shortest duration, collecting the overflowed gas by using a leakage detection device in the period, and calculating the leakage amount.
13) Closing a heating system of the natural gas furnace, opening a pressure release valve (15) at the upstream side to release pressure in stages, and closing the pressure release valve for 5 minutes when the pressure is reduced by 0.5Mpa by a pressure gauge (15) at the upstream side;
14) looking up a shell thermometer (12) on the upstream side of the test workpiece, and opening the furnace door when the reading of the thermometer is reduced to below 200 ℃;
15) checking the reading of an upstream side pressure gauge (14) to be 0Mpa at the moment, checking an environment temperature (furnace temperature) gauge, and detaching test devices such as an upstream side end socket, a downstream side end socket, a temperature sensor and the like when the environment temperature is reduced to room temperature;
16) checking the test workpiece in all aspects, and recording whether deformation or other abnormal phenomena exist or not, and ending the sealing test process;
1.3 test of switching action
1) Installing a tested workpiece in a testing device, opening a valve plate to be in a full-open state, and connecting temperature sensors at various positions;
2) checking each connection joint of the test pipeline to ensure correct connection and good sealing;
3) closing all control valves in the test pipeline;
4) opening an upstream side pressure release valve (15) and a downstream side pressure release valve (16), and then sequentially opening a pipeline switch valve (13), a pressure release valve (6) and an air source switch valve (2) to fill nitrogen into the test workpiece, wherein the amount of the filled gas is VAt a time。
V＝1.5(V1+V2+V3+V4)
In the formula VAt a timeThe volume dm of the first nitrogen charge3
1.5-safety factor
V1-total volume dm of test pipeline3
V2-volume dm of upstream side head3
V3Downstream side head volume dm3
V4-test workpiece volume dm3
5) Closing the air source switch valve (2), the upstream side pressure release valve (15) and the downstream side pressure release valve (16) in sequence, and recording the reading of the upstream side pressure gauge (14);
6) opening the gas source switch valve (2) and the booster pump (4), and filling nitrogen into the test workpiece again, wherein the filling gas amount is VTwo timesRecording the upstream pressure gauge (14) reading;
Vtwo times＝VHigh temperature-VAt a time/1.5
In the formula VTwo times-a second nitrogen filling volume dm3
VHigh temperature-the volume dm of nitrogen required to reach the test pressure at high temperature3
VAt a time-product dm of a second nitrogen filling3
VHigh temperature＝nRT/P1-P2
In the formula VHigh temperature-the volume dm of nitrogen required to reach the test pressure at high temperature3
n-amount of gaseous substance, nitrogen value mol
R-constant
T-test temperature K
P1-test pressure kPa
P2-pressure of the inflation gas kPa (pressure gauge reading)
7) Closing the air source switch valve (2), the booster pump (4) and the pipeline switch valve (13), and opening the pipeline pressure relief valve (10);
8) and closing the natural gas furnace door, starting a heating system of the natural gas furnace, and heating by stages. In each heating stage, the pressure change condition of an upstream side pressure gauge (14) is observed and recorded;
g) the first stage is as follows: the temperature is between room temperature and 300 ℃, and the heating rate is not more than 150 ℃/h.
h) And a second stage: the temperature is 300-500 ℃, and the heating rate is not more than 100 ℃/h.
i) And a third stage: 500 ℃ to the test temperature, at a heating rate not exceeding 50 ℃/h.
The temperature time curve is shown in fig. 4;
9) and (4) checking the temperature reading in the upstream side cavity of the test workpiece, and confirming that the temperature is within the test temperature range. Otherwise, adjusting the heating system of the natural gas heating furnace to make the natural gas heating furnace within the test temperature;
10) the upstream pressure gauge reading is checked and recorded for the test pressure. Otherwise, fine adjustment of the pressure value by adding a small amount of nitrogen to ensure that the pressure value is within the test pressure range;
note that: when the pressure exceeds the test pressure range, the upstream side pressure release valve (15) and the downstream side pressure release valve (16) need to be opened for emergency pressure release;
11) under the condition of heat preservation and pressure stabilization, the valve plate is opened and closed through the workpiece executing mechanism, whether the blockage phenomenon exists or not is observed, and the opening and closing times are according to the requirements of customers or contract requirements.
15) The valve plate is in a full-open state, a heating system of the natural gas furnace is closed, an upstream side pressure release valve (15) and a downstream side pressure release valve (16) are opened for pressure release in stages, and the upstream side pressure gauge (14) displays that the pressure release valve is closed for 5 minutes when the pressure is reduced by 0.5 Mpa;
12) looking up a shell thermometer (12) on the upstream side of the test workpiece, and opening the furnace door when the reading of the thermometer is reduced to below 200 ℃;
13) checking the reading of an upstream side pressure gauge (14) to be 0Mpa at the moment, checking an environment temperature (furnace temperature) gauge, and detaching test devices such as an upstream side end socket, a downstream side end socket, a temperature sensor and the like when the environment temperature is reduced to room temperature;
14) and checking whether the test workpiece has deformation or other abnormal phenomena in all aspects, recording, and ending the starting and stopping test process.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention.
Claims (7)
1. The utility model provides a high temperature valve closed type detection test device based on gas heating system, characterized by: the device comprises a heating furnace for containing a test workpiece, a nitrogen cylinder group, an air source switch valve, a booster pump, a pressure reducing valve, a pipeline thermometer and a leakage detection device, wherein an upstream side end enclosure and a downstream side end enclosure which are connected with the test workpiece are arranged in the heating furnace, a plurality of thermometers for measuring the temperature of the test workpiece, an upstream side pressure gauge, a pipeline switch valve and an upstream side pressure relief valve are arranged on the upstream side end enclosure, a downstream side pressure gauge, a downstream side pressure relief valve and a leakage detection pipeline switch valve are arranged on the downstream side end enclosure, the leakage detection pipeline switch valve is connected to the leakage detection device, the upstream side pressure relief valve, the pipeline switch valve, the downstream side pressure relief valve and the leakage detection pipeline switch valve are all arranged outside the heating furnace, a workpiece executing mechanism for controlling the opening degree of the test workpiece is further arranged on the heating furnace, an outlet of the nitrogen cylinder group is connected to, the outlet of the booster pump is connected to the inlet of the pressure reducing valve, and the outlet of the pressure reducing valve is connected to the inlet of the pipeline switching valve.
2. The high-temperature valve closed type detection test device based on the gas heating system as claimed in claim 1, wherein: the temperature meter of the upstream side end socket comprises an upstream side cavity inner temperature meter and an upstream side shell temperature meter.
3. The high-temperature valve closed type detection test device based on the gas heating system as claimed in claim 1, wherein: and an air source pressure gauge is arranged on a connecting pipeline of the nitrogen cylinder group and the air source switch valve.
4. The high-temperature valve closed type detection test device based on the gas heating system as claimed in claim 1, wherein: and a pressure boosting pressure gauge is arranged on a pipeline between the booster pump and the pressure reducing valve.
5. The high-temperature valve closed type detection test device based on the gas heating system as claimed in claim 1, wherein: and a pressure reducing pressure gauge, a gas flow recording gauge and a pipeline thermometer are arranged on a pipeline connecting the pressure reducing valve and the pipeline switch valve.
6. The high-temperature valve closed type detection test device based on the gas heating system as claimed in claim 1, wherein: and a pipeline pressure relief valve is arranged on a pipeline connecting the pressure reducing valve and the pipeline switching valve.
7. The high-temperature valve closed type detection test device based on the gas heating system as claimed in claim 1, wherein: and a probe for monitoring the view screen is arranged in the heating furnace and is connected to a view screen monitoring system.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN118010262A (en) * | 2024-04-09 | 2024-05-10 | 太原理工大学 | IV type hydrogen storage container liner multistage pressure hydrogen permeation testing device and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118010262A (en) * | 2024-04-09 | 2024-05-10 | 太原理工大学 | IV type hydrogen storage container liner multistage pressure hydrogen permeation testing device and method |
| CN118010262B (en) * | 2024-04-09 | 2024-06-07 | 太原理工大学 | IV type hydrogen storage container liner multistage pressure hydrogen permeation testing device and method |
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