CN113686509A - Valve packing sealing monitoring device with self-checking function - Google Patents
Valve packing sealing monitoring device with self-checking function Download PDFInfo
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- CN113686509A CN113686509A CN202111066481.2A CN202111066481A CN113686509A CN 113686509 A CN113686509 A CN 113686509A CN 202111066481 A CN202111066481 A CN 202111066481A CN 113686509 A CN113686509 A CN 113686509A
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- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/06—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing bubbles in a liquid pool
- G01M3/08—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing bubbles in a liquid pool for pipes, cables or tubes; for pipe joints or seals; for valves; for welds
- G01M3/086—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing bubbles in a liquid pool for pipes, cables or tubes; for pipe joints or seals; for valves; for welds for valves
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Abstract
The invention discloses a valve packing seal monitoring device with a self-checking function, which comprises: the sealing detection mechanism is connected with the gas outlet end of the section to be detected, gas enters the sealing detection mechanism through the section to be detected, and the detection assembly generates and transmits a power signal after detecting that the gas exists in the sealing detection mechanism; the gas supply port of the gas supply mechanism is connected with the section to be detected, and the gas supply mechanism intermittently pumps self-detection gas into the sealing detection mechanism; the remote service mechanism receives the electric signal sent by the detection assembly, and performs self-detection judgment and gas leakage detection judgment according to the electric signal; the method comprises the following steps: the remote service mechanism sends a gas supply instruction to the gas supply mechanism, the gas supply mechanism receives the gas supply instruction and pumps self-checking gas into the sealing detection mechanism, and if the remote service mechanism receives a self-checking electrical signal sent by the detection assembly, the monitoring device is judged to be normal in operation; otherwise, the monitoring device is judged to be in an abnormal state. The invention realizes the functions of self-checking judgment of the device and online detection of valve leakage.
Description
Technical Field
The invention relates to the technical field of detection technology research of medium leakage in a valve, in particular to a valve packing sealing monitoring device with a self-checking function.
Background
The valve is widely applied in the process industry, in particular to the fields of chemical engineering and nuclear power. The system is an important component of various pipe network systems, controls the running state of the system, is connected with main and auxiliary equipment of a power station and the system, and has important influence on the normal work of the system. The nuclear power valve is a medium conveying control device with a large number of used nuclear power stations, is connected with a plurality of systems of the whole nuclear power station, has the functions of stopping, adjusting, guiding, preventing countercurrent, stabilizing pressure, shunting or overflowing and relieving pressure and the like, is an essential component for safe operation of the nuclear power station, and guarantees the reliable operation of the nuclear power station. The working condition and environment of the nuclear power valve are complicated, and the requirements on the radioactivity, the temperature, the pressure grade and the like of a conveying medium are very strict. Once the valve leaks, not only industrial production is affected to a certain extent, but also the life and property safety of people is endangered, and sometimes, the harmony and stability of the society are even affected.
If only regular maintenance service is used for these failures using conventional methods, leaks may have occurred during the service of the blank, which may have caused environmental pollution and potential life and property safety. If effective measures can be found and taken in advance, the loss caused by valve leakage can be effectively avoided for the most part. At present, relevant research reports exist for leakage detection of various types of valves, but research for online monitoring is lacked, no relevant report exists in an industrialized valve leakage online monitoring technology, and development of high-precision valve packing leakage online monitoring equipment is very important and urgent.
Disclosure of Invention
The invention aims to solve the problems that the existing monitoring device for medium leakage in a valve does not have an online self-checking function and cannot be industrialized, and provides a valve packing sealing monitoring device with a self-checking function, when an electric signal is not received within a set time, the monitoring device is subjected to self-checking judgment, and a self-checking judgment method comprises the following steps: the remote service mechanism sends a gas supply instruction to the gas supply mechanism, the gas supply mechanism receives the gas supply instruction and pumps self-checking gas into the sealing detection mechanism, the self-checking gas enters a gas collection assembly of the sealing detection mechanism, the self-checking gas forms bubbles in ionic liquid, after the detection assembly detects the bubbles, a self-checking electric signal is generated and sent to the remote service mechanism, the remote service mechanism receives the self-checking electric signal, and the monitoring device is judged to be normal in operation; otherwise, judging that the monitoring device is abnormal in operation; when the monitoring device is in a normal operation state, the gas leakage detection judgment is carried out on the section to be detected, and the gas supply mechanism is controlled to stop operating, wherein the gas leakage detection judgment method comprises the following steps: if the gas collection assembly collects leaked gas, the leaked gas forms bubbles in the ionic liquid, after the detection assembly detects the bubbles, a leakage electric signal is generated and sent to the signal processing assembly, the signal processing assembly receives the leakage electric signal and calculates to obtain a detection result, the detection result is sent to the remote service mechanism, and the remote service mechanism receives and displays the detection result and judges that the section to be detected leaks; otherwise, judging that the section to be detected is not leaked.
To achieve these objects and other advantages and in accordance with the purpose of the invention, a valve packing seal monitoring apparatus having a self-checking function is provided, comprising:
the sealing detection mechanism is connected with a gas outlet end of the section to be detected, gas enters the sealing detection mechanism through the section to be detected, and the sealing detection mechanism comprises a detection assembly which generates and transmits a power signal after detecting that the gas exists in the sealing detection mechanism;
the gas supply port of the gas supply mechanism is connected with the section to be detected, and the gas supply mechanism intermittently pumps self-detection gas into the sealing detection mechanism;
the remote service mechanism receives the electric signal sent by the detection component, and performs self-detection judgment and gas leakage detection judgment according to the electric signal;
when the electric signal is not received within the set time, the self-checking judgment is carried out on the monitoring device, and the self-checking judgment method comprises the following steps: the remote service mechanism sends a gas supply instruction to the gas supply mechanism, the gas supply mechanism receives the gas supply instruction and pumps self-checking gas into the sealing detection mechanism, and if the remote service mechanism receives a self-checking electrical signal sent by the detection assembly, the monitoring device is judged to be normally operated; otherwise, the monitoring device is judged to be in an abnormal state.
Preferably, the set time is 10min to 30 min.
Preferably, the self-test determination method further includes: the self-checking gas enters the sealing detection mechanism, and the detection assembly generates a self-checking electric signal after detecting that the self-checking gas exists in the sealing detection mechanism and sends the self-checking electric signal to the remote service mechanism.
Preferably, the seal detection mechanism further includes:
the leakage collecting assembly is used for collecting self-checking gas or leakage gas, and the sealing detection mechanism is connected with the gas outlet end of the section to be detected through the leakage collecting assembly;
a signal processing component;
the detection assembly is further used for generating and sending a leakage electric signal after detecting that leakage gas exists in the sealing detection mechanism; when the monitoring device is in a normal operation state, the gas leakage detection judgment is carried out on the section to be detected, and the gas leakage detection judgment method comprises the following steps:
when the detection assembly detects a leakage electric signal, the leakage electric signal is sent to the signal processing assembly, the signal processing assembly receives the leakage electric signal and calculates to obtain a detection result, and then the detection result is sent to the remote service mechanism, and the remote service mechanism receives and displays the detection result and simultaneously judges that the section to be detected is in a leakage state;
otherwise, judging that the section to be detected is not leaked.
Preferably, the signal processing component is in communication connection with the detection component, and controls the gas supply mechanism to stop running when the gas leakage judgment is performed on the section to be detected.
Preferably, the ion liquid is filled in the leak-collecting component, and the collected gas forms bubbles in the ion liquid;
if the detection assembly detects bubbles, determining that gas exists in the sealing detection mechanism; otherwise, judging that no gas exists in the sealing detection mechanism.
Preferably, the ionic liquid is 1-butyl-3-methylimidazolium hexafluorophosphate.
Preferably, the calculation of the detection result includes:
accumulating the number of the leakage electric signals;
and calculating the leakage amount of the section to be detected according to the number of the leakage electric signals.
Preferably, the remote service mechanism is provided with an alarm assembly, and an alarm threshold value is preset on the alarm assembly;
when the detection result is greater than or equal to the alarm threshold value, the remote service mechanism sends out an alarm; otherwise, no alarm is given.
Preferably, the detection process of the monitoring device is as follows:
when an electric signal is not received within a set time, self-checking judgment is carried out on a monitoring device, and the self-checking judgment method comprises the following steps:
the remote service mechanism sends a gas supply instruction to the gas supply mechanism, the gas supply mechanism receives the gas supply instruction and pumps self-checking gas into the sealing detection mechanism, the self-checking gas enters a gas collection assembly of the sealing detection mechanism, the self-checking gas forms bubbles in ionic liquid, a detection assembly generates a self-checking electrical signal after detecting the bubbles, the self-checking electrical signal is sent to the remote service mechanism, and the remote service mechanism receives the self-checking electrical signal and judges that the monitoring device operates normally; otherwise, judging that the monitoring device operates abnormally;
when the monitoring device is in a normal operation state, performing gas leakage detection judgment on a section to be detected, and controlling the gas supply mechanism to stop operating, wherein the gas leakage detection judgment method comprises the following steps:
if the gas collection assembly collects leaked gas, the leaked gas forms bubbles in the ionic liquid, after the detection assembly detects the bubbles, a leakage electric signal is generated and sent to the signal processing assembly, the signal processing assembly receives the leakage electric signal and calculates to obtain a detection result, the detection result is sent to the remote service mechanism, and the remote service mechanism receives and displays the detection result and judges that the section to be detected leaks; otherwise, judging that the section to be detected is not leaked.
The invention at least comprises the following beneficial effects:
the invention can carry out self-checking judgment on the running state of the whole device within set time, avoids the condition that when the device is in fault, the terminal does not receive electric signals, so that the device misjudges the section to be detected of the valve to be detected to have no leakage, and can carry out metering statistics on the leakage when the section to be detected of the valve leaks.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
Fig. 1 is a schematic structural diagram of a monitoring device according to the present invention.
Detailed Description
The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.
The invention provides a valve packing sealing monitoring device with a self-checking function, which comprises: the device comprises a gas supply mechanism 1, a sealing detection mechanism 2 and a remote service mechanism, wherein a gas supply port of the gas supply mechanism 1 is connected with a section to be detected, and the gas supply mechanism 1 intermittently pumps self-detection gas into the sealing detection mechanism 2; the sealing detection mechanism 2 is connected with the gas outlet end of the section to be detected, gas enters the sealing detection mechanism 2 through the section to be detected, the sealing detection mechanism 2 comprises a detection assembly 21, a leakage collection assembly 22 and a signal processing assembly 23, and the detection assembly 21 generates and transmits a power signal after detecting that the gas exists in the sealing detection mechanism 2; the remote service mechanism receives the electric signal sent by the detection component 21, and performs self-detection judgment and gas leakage detection judgment according to the electric signal; when the electric signal is not received within the set time, the self-checking judgment is carried out on the monitoring device, and the self-checking judgment method comprises the following steps: the remote service mechanism sends a gas supply instruction to the gas supply mechanism 1, the gas supply mechanism 1 receives the gas supply instruction and pumps self-checking gas into the sealing detection mechanism 2, and if the remote service mechanism receives a self-checking electrical signal sent by the detection assembly 21, the monitoring device is judged to be normally operated; otherwise, the monitoring device is judged to be in an abnormal state.
Specifically, the detection process of the monitoring device is as follows:
the self-checking judgment method comprises the steps that when the device does not receive an electric signal within set time, self-checking judgment is carried out on the monitoring device, the set time is 10min or 20min or 30min, and the self-checking judgment is carried out on the operation condition of the whole device, so that the situation that when the device fails, a terminal does not receive the electric signal, the device misjudges a to-be-detected section of a valve, and the leakage does not exist is avoided, and the self-checking judgment function of the device is achieved. The self-checking judgment method comprises the following steps:
sending a gas supply instruction to a gas supply mechanism 1 by a remote service mechanism every 10min or 20min or 30min, starting operation after the gas supply mechanism 1 receives the gas supply instruction, pumping self-checking gas into a sealing detection mechanism 2 by the gas supply mechanism 1, enabling the self-checking gas to enter the sealing detection mechanism 2, connecting the sealing detection mechanism 2 with a gas outlet end of a section to be detected through a leakage collecting assembly 22, enabling the leakage collecting assembly 22 to collect the self-checking gas, filling ionic liquid in the leakage collecting assembly 22, enabling the ionic liquid to be 1-butyl-3-methylimidazolium hexafluorophosphate, enabling the collected gas to form bubbles in the ionic liquid, judging that the gas exists in the sealing detection mechanism if the detection assembly 21 detects the bubbles, generating a self-checking electric signal by the detection assembly 21, sending the self-checking electric signal to the remote service mechanism, and receiving the self-checking electric signal by the remote service mechanism, in addition, when the self-checking judgment is carried out, if the section to be detected leaks, leaked gas enters the sealing detection mechanism through the section to be detected, the leakage collecting assembly 22 collects the leaked gas, an electric signal can be generated and sent to the remote service mechanism, after the remote service mechanism receives the electric signal, the device can be judged to be normally operated, and if the detection assembly 21 does not detect bubbles or the remote service mechanism does not receive the self-checking electric signal, the device is judged to be free from gas in the sealing detection mechanism 2.
When the monitoring device is in a normal operation state, the gas leakage detection judgment is carried out on the section to be detected, the signal processing assembly 23 is in communication connection with the detection assembly 21, the leakage condition is measured, the gas supply mechanism 1 is controlled to stop operating, and the self-checking gas in the gas supply mechanism 1 is prevented from interfering the judgment result.
The gas leakage detection judging method comprises the following steps: if there is the gas that leaks to get into sealed detection mechanism 2 through the section of waiting to detect, then the gas collection subassembly can collect the gas that leaks, it is filled with ionic liquid to leak the subassembly in the collection, this ionic liquid is 1-butyl-3-methylimidazole hexafluorophosphate, make the gas that leaks form the bubble in ionic liquid, detection subassembly 21 detects the bubble, then judge to have the gas that leaks and generate the signal of telecommunication in sealed detection mechanism 2, at this moment, signal processing subassembly 23 and detection subassembly 21 communication connection, detection subassembly 21 will leak the signal of telecommunication and send to signal processing subassembly 23, signal processing subassembly 23 receives and leaks the signal of telecommunication and calculates and obtain the testing result.
The calculation process of the detection result comprises the following steps: accumulating the number of the leakage electric signals; and calculating the leakage amount of the section to be detected according to the number of the leakage electric signals. The signal processing component 23 sends the detection result to a remote service mechanism, and the remote service mechanism receives and displays the detection result and judges that the section to be detected is in a leakage state; the remote service mechanism is also provided with an alarm component, and an alarm threshold value is preset on the alarm component; when the detection result is greater than or equal to the alarm threshold value, the remote service mechanism sends out an alarm; otherwise, no alarm is given. If no leakage gas enters the sealing detection mechanism 2 through the section to be detected, the detection assembly 21 does not generate a leakage electric signal, the remote service mechanism finally cannot receive a detection result, and finally the section to be detected is judged to be not leaked.
The working process of the monitoring device is as follows:
a self-test determination method for a monitoring device, when an electric signal is not received within a set time, includes: the remote service mechanism sends a gas supply instruction to the gas supply mechanism 1, the gas supply mechanism 1 receives the gas supply instruction and pumps self-checking gas into the sealing detection mechanism 2, the self-checking gas enters a gas collection assembly of the sealing detection mechanism 2, the self-checking gas forms bubbles in ionic liquid, after the detection assembly 21 detects the bubbles, a self-checking electric signal is generated and sent to the remote service mechanism, the remote service mechanism receives the self-checking electric signal, and the monitoring device is judged to be normally operated; otherwise, judging that the monitoring device is abnormal in operation;
when the monitoring device is in a normal operation state, gas leakage detection judgment is carried out on the section to be detected, the gas supply mechanism 1 is controlled to stop operating, and the gas leakage detection judgment method comprises the following steps: if the gas collection assembly collects leaked gas, the leaked gas forms bubbles in the ionic liquid, after the detection assembly 21 detects the bubbles, a leakage electric signal is generated and sent to the signal processing assembly 23, the signal processing assembly 23 receives the leakage electric signal and calculates to obtain a detection result, the detection result is sent to the remote service mechanism, and the remote service mechanism receives and displays the detection result and judges that the section to be detected leaks; otherwise, judging that the section to be detected is not leaked. The invention can carry out self-checking judgment on the running state of the whole device within set time, avoids the condition that when the device is in fault, the terminal does not receive electric signals, so that the device misjudges the section to be detected of the valve to be detected to have no leakage, and can carry out metering statistics on the leakage when the section to be detected of the valve leaks.
Therefore, the invention can carry out self-checking judgment on the running state of the whole device within the set time, avoids the situation that when the device is in fault, the terminal does not receive electric signals, so that the device misjudges the section to be detected of the valve to be detected to have no leakage, and can carry out metering statistics on the leakage quantity when the section to be detected of the valve leaks.
While embodiments of the invention have been disclosed above, it is not intended to be limited to the uses set forth in the specification and examples. It can be applied to all kinds of fields suitable for the present invention. Additional modifications will readily occur to those skilled in the art. It is therefore intended that the invention not be limited to the exact details and illustrations described and illustrated herein, but fall within the scope of the appended claims and equivalents thereof.
Claims (10)
1. A valve packing seals monitoring devices with self-checking function which characterized in that includes:
the sealing detection mechanism is connected with the gas outlet end of the section to be detected, gas enters the sealing detection mechanism through the section to be detected, and the sealing detection mechanism comprises a detection assembly which generates and transmits a power signal after detecting that the gas exists in the sealing detection mechanism;
the gas supply port of the gas supply mechanism is connected with the section to be detected, and the gas supply mechanism intermittently pumps self-detection gas into the sealing detection mechanism;
the remote service mechanism receives the electric signal sent by the detection component, and performs self-detection judgment and gas leakage detection judgment according to the electric signal;
when the electric signal is not received within the set time, the self-checking judgment is carried out on the monitoring device, and the self-checking judgment method comprises the following steps: the remote service mechanism sends a gas supply instruction to the gas supply mechanism, the gas supply mechanism receives the gas supply instruction and pumps self-checking gas into the sealing detection mechanism, and if the remote service mechanism receives a self-checking electrical signal sent by the detection assembly, the monitoring device is judged to be normally operated; otherwise, the monitoring device is judged to be in an abnormal state.
2. The valve packing seal monitoring device with self-test function according to claim 1, wherein the set time is 10min to 30 min.
3. The valve packing seal monitoring device with self-checking function according to claim 2, wherein the self-checking determination method further comprises: the self-checking gas is pumped into the sealing detection mechanism, and the detection assembly generates the self-checking electric signal after detecting that the self-checking gas exists in the sealing detection mechanism and sends the self-checking electric signal to the remote service mechanism.
4. The valve packing seal monitoring device with self-test function of claim 1, wherein said seal detection mechanism further comprises:
the leakage collecting assembly is used for collecting self-checking gas or leakage gas, and the sealing detection mechanism is connected with the gas outlet end of the section to be detected through the leakage collecting assembly;
a signal processing component;
the detection assembly is further used for generating and sending a leakage electric signal after detecting that leakage gas exists in the sealing detection mechanism; when the monitoring device is in a normal operation state, the gas leakage detection judgment is carried out on the section to be detected, and the gas leakage detection judgment method comprises the following steps:
when the detection assembly detects a leakage electric signal, the leakage electric signal is sent to the signal processing assembly, the signal processing assembly receives the leakage electric signal and calculates to obtain a detection result, and then the detection result is sent to the remote service mechanism, and the remote service mechanism receives and displays the detection result and simultaneously judges that the section to be detected is in a leakage state;
otherwise, judging that the section to be detected is not leaked.
5. The valve packing seal monitoring device with self-checking function according to claim 4, wherein the signal processing component is in communication connection with the detection component, and controls the gas supply mechanism to stop operating when the gas detection leakage of the section to be detected is determined.
6. The valve packing seal monitoring device with self-checking function according to claim 5, wherein the leak-collecting component is filled with ionic liquid, and the collected gas forms bubbles in the ionic liquid;
if the detection assembly detects bubbles, determining that gas exists in the sealing detection mechanism; otherwise, judging that no gas exists in the sealing detection mechanism.
7. The valve packing seal monitoring device with self-checking function according to claim 6, wherein the ionic liquid is 1-butyl-3-methylimidazolium hexafluorophosphate.
8. The valve packing seal monitoring device with self-checking function according to claim 5, wherein the calculation process of the detection result comprises:
accumulating the number of the leakage electric signals;
and calculating the leakage amount of the section to be detected according to the number of the leakage electric signals.
9. The valve packing seal monitoring device with the self-checking function according to claim 5, wherein an alarm component is arranged on the remote service mechanism, and an alarm threshold value is preset on the alarm component;
when the detection result is greater than or equal to the alarm threshold value, the remote service mechanism sends out an alarm; otherwise, no alarm is given.
10. The smart leak monitoring device based on flexible electronics according to claim 5, wherein the detection process of the monitoring device is:
when an electric signal is not received within a set time, self-checking judgment is carried out on a monitoring device, and the self-checking judgment method comprises the following steps:
the remote service mechanism sends a gas supply instruction to the gas supply mechanism, the gas supply mechanism receives the gas supply instruction and pumps self-checking gas into the sealing detection mechanism, the self-checking gas enters a gas collection assembly of the sealing detection mechanism, the self-checking gas forms bubbles in ionic liquid, a detection assembly generates a self-checking electrical signal after detecting the bubbles, the self-checking electrical signal is sent to the remote service mechanism, and the remote service mechanism receives the self-checking electrical signal and judges that the monitoring device operates normally; otherwise, judging that the monitoring device operates abnormally;
when the monitoring device is in a normal operation state, performing gas leakage detection judgment on a section to be detected, and controlling the gas supply mechanism to stop operating, wherein the gas leakage detection judgment method comprises the following steps:
if the gas collection assembly collects leaked gas, the leaked gas forms bubbles in the ionic liquid, after the detection assembly detects the bubbles, a leakage electric signal is generated and sent to the signal processing assembly, the signal processing assembly receives the leakage electric signal and calculates to obtain a detection result, the detection result is sent to the remote service mechanism, and the remote service mechanism receives and displays the detection result and judges that the section to be detected leaks; otherwise, judging that the section to be detected is not leaked.
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