CN210125179U - Pulse type cyclohexane gas heat generator for detecting leakage rate of iodine adsorber - Google Patents
Pulse type cyclohexane gas heat generator for detecting leakage rate of iodine adsorber Download PDFInfo
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- CN210125179U CN210125179U CN201920415829.6U CN201920415829U CN210125179U CN 210125179 U CN210125179 U CN 210125179U CN 201920415829 U CN201920415829 U CN 201920415829U CN 210125179 U CN210125179 U CN 210125179U
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- heat generator
- cyclohexane
- cyclohexane gas
- iodine adsorber
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Abstract
The utility model relates to a pulse type cyclohexane gas heat generator for detecting the leakage rate of an iodine adsorber, which comprises a heat generator shell, wherein a gasification chamber is arranged in the heat generator shell, a heating element is arranged in the gasification chamber, and a liquid injection pipe, a compressed air leading-in pipe and a cyclohexane gas leading-out pipe which are communicated with the gasification chamber are arranged on the heat generator shell; the end of the liquid injection pipe is provided with a liquid filling opening, and the free end of the cyclohexane gas eduction pipe is connected with a cyclohexane gas inlet pipe on the iodine adsorber through a quick plug. The generator adopts an electric heating mode to heat cyclohexane liquid to be above a boiling point so that the cyclohexane liquid is completely gasified, and the cyclohexane liquid is forcedly blown into the iodine adsorber by combining with compressed air, so that the pulse type injection of cyclohexane gas is realized.
Description
Technical Field
The utility model relates to a nuclear field leak hunting test equipment, especially a pulsed cyclohexane gas heat generator that is used for iodine adsorber leakage rate to detect.
Background
The iodine adsorber is a key device for controlling the radioactive iodine of the effluent to achieve safe discharge, is an important link for realizing the radiation protection target, and the important link for reducing radioactive substance release source items and ensuring the safe operation of the reactor is to ensure that the iodine adsorber is in a safe and usable state. In order to ensure the safe and reliable operation of the nuclear air purification system and ensure that the emission of radioactive gas in a ventilation system of a nuclear facility meets the effluent emission limit value required by the relevant national standard, the effectiveness evaluation test needs to be carried out on a newly installed iodine adsorber before operation, and the effectiveness of the function of the installed iodine adsorber needs to be evaluated by carrying out regular field tests during the operation process.
The cyclohexane method is used as a novel non-toxic and harmless iodine adsorber test method, is suitable for a nuclear power station personnel habitability space (central control room, emergency command center) iodine adsorber ventilation system, and avoids the environmental safety problem when the nuclear power station personnel habitability space and a nuclear island ventilation system evaluate the effectiveness of the iodine adsorber.
When the cyclohexane method is used for detecting the leakage rate of the iodine adsorber, cyclohexane gas is injected into an injection port of a ventilation system of the iodine adsorber by using a cyclohexane gas generator, the concentration of cyclohexane samples in upstream and downstream gas is measured by sampling at an upstream sampling port and a downstream sampling port, and whether the mechanical leakage rate of the iodine adsorber meets the standard requirement or not is judged according to the ratio of the upstream and downstream concentrations, wherein the safe and stable injection of the cyclohexane gas is one of key factors for smooth performance of the whole test. Therefore, a pulse type cyclohexane gas heat generator is developed and used for the field leakage rate detection test of the iodine adsorber of the ventilation system of the nuclear facility, and the field application condition shows that the performance of the generator completely meets the design requirement.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the defects existing in the prior art and providing an impulse type cyclohexane gas heat generator for detecting the leakage rate of an iodine adsorber.
In order to realize the purpose, the utility model discloses a technical scheme is:
the pulse type cyclohexane gas heat generator for detecting the leakage rate of the iodine adsorber comprises a heat generator shell, wherein a gasification chamber is arranged in the heat generator shell, a heating element is arranged in the gasification chamber, and a liquid injection pipe, a compressed air inlet pipe and a cyclohexane gas outlet pipe which are communicated with the gasification chamber are arranged on the heat generator shell;
the end part of the liquid injection pipe is provided with a liquid injection port, and the free end of the cyclohexane gas eduction pipe is connected with a cyclohexane gas inlet pipe on the iodine adsorber through a quick plug.
Further, the end of the compressed air inlet pipe is connected with an air pump.
Furthermore, the heating element is an electric heating wire which is arranged at the bottom of the gasification chamber.
Furthermore, a pressure gauge connected with the gasification chamber is arranged on the heat generator shell.
Furthermore, a temperature controller connected with the electric heating wire is arranged on the heat generator shell, and the electric heating wire is connected with a power supply through a power line.
Further, the liquid injection pipe, the compressed air inlet pipe and the cyclohexane gas outlet pipe are respectively provided with a switch valve, and the compressed air inlet pipe is also provided with a pressure reducing valve.
Furthermore, the quick plug comprises a female plug arranged at the end part of the cyclohexane gas outlet pipe and a male plug connected with the cyclohexane gas inlet pipe on the iodine adsorber.
Further, a handle is mounted on the top of the heat generator housing.
The utility model has the advantages that: the generator adopts an electric heating mode to heat cyclohexane liquid to be above a boiling point so that the cyclohexane liquid is completely gasified, and the cyclohexane liquid is forcedly blown into the iodine adsorber by combining with compressed air, so that the pulse type injection of cyclohexane gas is realized.
Drawings
Fig. 1 is a schematic view of the present invention.
Detailed Description
As shown in fig. 1, the pulse cyclohexane gas heat generator for detecting the leakage rate of the iodine adsorber comprises a heat generator shell, wherein a gasification chamber 1 is arranged in the heat generator shell, the gasification chamber 1 is a stainless steel chamber with the volume of about 300ml, a heating element 2 is arranged in the gasification chamber 1, and a liquid injection pipe 3, a compressed air inlet pipe 4 and a cyclohexane gas outlet pipe 5 which are communicated with the gasification chamber 1 are arranged on the heat generator shell;
the end of the liquid injection pipe 3 is provided with a liquid filling opening 6, and the free end of the cyclohexane gas eduction pipe 5 is connected with a cyclohexane gas inlet pipe 8 on the iodine adsorber through a quick plug 7. The quick plug 7 comprises a female plug arranged at the end part of the cyclohexane gas outlet pipe 5 and a male plug connected with a cyclohexane gas inlet pipe 8 on the iodine adsorber. The quick plug 7 can be a common air pipe quick connector in the market, and the specific structure of the quick plug 7 is not described in detail in the patent.
Wherein the end of the compressed air introduction pipe 4 is connected to an air pump, and the heating member 2 is preferably a heating wire installed at the bottom of the vaporizing chamber 1.
The manometer 9 of installation and vaporizer 1 connection on the heat generator casing, manometer 9 are used for detecting the atmospheric pressure in vaporizer 1, are equipped with the temperature controller of being connected with the heating wire on the heat generator casing, and the temperature controller model is EUROTHERM, and the heating wire passes through the power cord and connects, and the heating temperature and the heat time of heating wire can be controlled to the temperature controller, the utility model discloses in, suitable temperature is 85 ℃ in vaporizer 1, the cyclohexane liquid that pours into vaporizer 1 through filling opening 6 under 85 ℃ of temperature is heated the gasification.
Furthermore, the liquid injection pipe 3, the compressed air inlet pipe 4 and the cyclohexane gas outlet pipe 5 are respectively provided with a switch valve 10, a switch valve 11, a switch valve 12 and a pressure reducing valve 13, and the top of the heat generator shell is provided with a handle for carrying and carrying conveniently.
The specific operation steps of the cyclohexane gas heat generator of the utility model are as follows:
1. opening the switch valve 10 on the liquid injection pipe 3 and the switch valve 12 on the cyclohexane gas eduction pipe 5, adding a certain volume of cyclohexane liquid into the liquid adding opening 6 by an injector, and closing the switch valve 10 and the switch valve 12;
2. connecting the power cord to the power supply, switching on the power switch 8, starting the heating wire to work, and when the temperature reaches the preset temperature of the temperature controller, controlling the heating wire to stop heating by the temperature controller.
3. A switch valve 11 on the compressed air inlet pipe 4 enables compressed air to enter the gasification chamber 1, the pressure in the gasification chamber 1 rises, and at the moment, a pressure gauge 9 displays the air pressure in the chamber;
4. when the field test condition meets the test requirement, the end part of the cyclohexane gas outlet pipe 5 is inserted into an injection port of a tested system (iodine adsorber), a switch valve 12 on the cyclohexane gas outlet pipe 5 is opened, cyclohexane gas formed by heating cyclohexane liquid in the gasification chamber 1 by an electric heating wire is injected into the tested system (iodine adsorber) along the cyclohexane gas outlet pipe 5 under the powerful purging effect of compressed air, the upstream sampling port and the downstream sampling port of the tested system (iodine adsorber) are used for sampling and measuring the concentration of cyclohexane samples in upstream and downstream gases, and whether the mechanical leakage rate of the iodine adsorber meets the standard requirement is judged according to the ratio of the upstream and downstream concentrations.
5. Because the amount of the cyclohexane liquid added at a time can be accurately controlled, and the single dosage is only a few milliliters, the operation is safe, and the injection concentration repeatability is good.
The generator adopts an electric heating mode to heat cyclohexane liquid to be above a boiling point so that the cyclohexane liquid is completely gasified, and the cyclohexane liquid is forcedly blown into the iodine adsorber by combining with compressed air, so that the pulse type injection of cyclohexane gas is realized.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may be modified, or some or all of the technical features may be equally replaced; these modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention.
Claims (8)
1. The pulse type cyclohexane gas heat generator for detecting the leakage rate of the iodine adsorber comprises a heat generator shell, wherein a gasification chamber is arranged in the heat generator shell, and the pulse type cyclohexane gas heat generator is characterized in that a heating element is arranged in the gasification chamber, and a liquid injection pipe, a compressed air inlet pipe and a cyclohexane gas outlet pipe which are communicated with the gasification chamber are arranged on the heat generator shell;
the end part of the liquid injection pipe is provided with a liquid injection port, and the free end of the cyclohexane gas eduction pipe is connected with a cyclohexane gas inlet pipe on the iodine adsorber through a quick plug.
2. The pulsed cyclohexane gas heat generator for iodine adsorber leakage rate detection of claim 1 wherein the end of the compressed air inlet pipe is connected to an air pump.
3. The pulse type cyclohexane gas heat generator for detecting the leakage rate of the iodine adsorber as claimed in claim 1 or 2, wherein the heating element is a heating wire, and the heating wire is installed at the bottom of the gasification chamber.
4. The pulsed cyclohexane gas heat generator for iodine adsorber leakage rate detection of claim 1 wherein the heat generator housing is fitted with a pressure gauge connected to the vaporizer.
5. The pulse cyclohexane gas heat generator for detecting the leakage rate of the iodine adsorber as claimed in claim 3, wherein the heat generator housing is provided with a temperature controller connected to the heating wire, and the heating wire is connected to a power supply via a power line.
6. The pulsed cyclohexane gas heat generator for detecting the leakage rate of the iodine adsorbers of claim 1, wherein the liquid injection pipe, the compressed air inlet pipe and the cyclohexane gas outlet pipe are all provided with switch valves, and the compressed air inlet pipe is also provided with a pressure reducing valve.
7. The pulsed cyclohexane gas heat generator for detecting the leakage rate of the iodine adsorber of claim 1, wherein the quick plugs comprise a female plug arranged at the end of the cyclohexane gas outlet pipe and a male plug connected with the cyclohexane gas inlet pipe of the iodine adsorber.
8. The pulsed cyclohexane gas heat generator for iodine adsorber leak rate detection of claim 1 wherein the top of the heat generator housing is fitted with a handle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920415829.6U CN210125179U (en) | 2019-03-29 | 2019-03-29 | Pulse type cyclohexane gas heat generator for detecting leakage rate of iodine adsorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920415829.6U CN210125179U (en) | 2019-03-29 | 2019-03-29 | Pulse type cyclohexane gas heat generator for detecting leakage rate of iodine adsorber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210125179U true CN210125179U (en) | 2020-03-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920415829.6U Active CN210125179U (en) | 2019-03-29 | 2019-03-29 | Pulse type cyclohexane gas heat generator for detecting leakage rate of iodine adsorber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210125179U (en) |
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2019
- 2019-03-29 CN CN201920415829.6U patent/CN210125179U/en active Active
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