CN115206562A - Pressure and temperature transient test device for pipe plugging process examination - Google Patents
Pressure and temperature transient test device for pipe plugging process examination Download PDFInfo
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- CN115206562A CN115206562A CN202210729195.8A CN202210729195A CN115206562A CN 115206562 A CN115206562 A CN 115206562A CN 202210729195 A CN202210729195 A CN 202210729195A CN 115206562 A CN115206562 A CN 115206562A
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- 238000012360 testing method Methods 0.000 title claims abstract description 79
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 9
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- 230000007547 defect Effects 0.000 description 3
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- 230000008929 regeneration Effects 0.000 description 3
- 238000011069 regeneration method Methods 0.000 description 3
- 239000008367 deionised water Substances 0.000 description 2
- 229910021641 deionized water Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C17/00—Monitoring; Testing ; Maintaining
- G21C17/017—Inspection or maintenance of pipe-lines or tubes in nuclear installations
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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Abstract
The invention provides a pressure temperature transient test device for a pipe plugging process examination, which comprises a plunger pump, a heat regenerative device, a preheating device, a test container, a cooler, a pressure stabilizer and a small circulation water tank, wherein the outlet of the plunger pump is connected with the cold end of the heat regenerative device, the outlet of the cold end of the heat regenerative device is connected with the preheating device, the outlet of the preheating device is connected with the test container, the outlet of the test container is connected with the hot end of the heat regenerative device, the outlet of the hot end of the heat regenerative device is connected with the hot end of the cooler, the outlet of the hot end of the cooler is divided into a pressure stabilizing branch and a water return branch, the pressure stabilizing branch is connected with the pressure stabilizer, the water return branch is connected with the small circulation water tank, and the small circulation water tank is connected with the inlet of the plunger pump. The device provided by the invention can be used for carrying out large-scale cycle test research on the pressure and temperature in the pipe plugging process examination, carrying out test verification on the effectiveness of the pipe plugging process, and carrying out optimization improvement on the pipe plugging technology according to the result.
Description
Technical Field
The invention relates to the technical field of nuclear power equipment, in particular to a pressure and temperature transient test device for pipe plugging process examination.
Background
The steam generator is a key device for realizing the heat exchange of the first loop and the second loop of the nuclear power station, and the working performance and the operation reliability of the steam generator are directly related to the safety, the economy and the reliability of the whole nuclear power station. At present, the assembly which has the greatest influence on the safe and efficient operation of the steam generator is an evaporator heat transfer pipe, and due to the fact that the working condition is poor, the pressure and temperature grade is high, the heat transfer pipe is prone to degradation and even damage after being operated for a period of time. In nuclear power generating units, most of steam generators are damaged every year, irreparable loss of damaged heat transfer tubes to the operation of the steam generators is avoided, and the heat transfer tubes meeting the steam generator heat transfer tube blockage criterion need to be blocked during overhaul of the units.
The heat transfer pipes of the steam generator of the nuclear power plant can be found to have defects after in-service inspection, and the defects of the heat transfer pipes cannot meet the normal use requirement, and the defective heat transfer pipes need to be plugged in time according to the pipe plugging criterion of the heat transfer pipes, and the process is called pipe plugging. In the process of pipe plugging, the material of the plug, the pipe plugging device, the pipe plugging method and the like are key factors for determining the effect of the pipe plugging process. At present, a plug (consumable material) is used in the process of plugging a tube of an evaporator of a nuclear power plant, the plug needs to be installed at the opening of a heat transfer tube with a corresponding specification and size in a mechanical tube plugging mode, the whole process from the development of the plug to the mechanical tube plugging is called a tube plugging process, in order to judge the reliability of the tube plugging process, an assessment test needs to be carried out on the heat transfer tube and an accessory part tube plate of a tested object, namely the mechanical tube plugging operation, and the assessment test is called a tube plugging process assessment, and the assessment test is divided into a pressure temperature transient test, a thermal shock test, a thermal fatigue test, a corrosion test and the like according to the standard.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a pressure and temperature transient test device for the pipe plugging process examination.
In order to achieve the above purpose, the invention provides the following technical scheme:
the utility model provides a pressure temperature transient test device for stifled pipe technology examination, includes plunger pump, backheat device, preheating device, test container, cooler, voltage regulator device and little circulating water case, the exit linkage of plunger pump the cold junction of backheat device, the cold junction exit linkage of backheat device preheating device, preheating device's exit linkage test container, the exit linkage of test container the hot junction of backheat device, the hot junction exit linkage of backheat device the hot junction of cooler, the hot junction export of cooler divide into steady voltage branch road and return water branch road, steady voltage branch road is connected the voltage regulator device, the return water branch road is connected little circulating water case, little circulating water case connects the entry of plunger pump.
As an implementation mode, the water dispenser further comprises a large-opening water discharging tank which is connected with the small circulating water tank to provide circulating water replenishing.
As a practical way, the large open drain tank is connected with the inlet of the plunger pump, and is used for ensuring that when the temperature of the medium in the small circulating water tank rises, the medium with lower temperature is directly provided for the whole loop through the large open drain tank, so that the test container is cooled down in an accelerated way.
As an implementation mode, the heat recovery device includes a heat recovery device, a heat recovery solenoid valve, and a bypass solenoid valve, wherein a cold end inlet of the heat recovery device is connected to an outlet of the plunger pump, a hot end inlet of the heat recovery device is connected to an outlet of the test container, the heat recovery solenoid valve is installed at a hot end outlet of the heat recovery device and connected to a hot end inlet of the cooler, and the bypass solenoid valve is installed on a bypass pipeline of the heat recovery device and used for cutting off a heat recovery function of the heat recovery device.
As an implementation manner, the preheating device includes an electric heater, a preheater, and a preheating safety valve, the electric heater is connected to the preheater, an inlet of the preheater is connected to an outlet of a cold end of the regenerator, and a vicinity of an outlet of an upper end of the preheater is connected to the preheating safety valve.
As a practical manner, the electric heater is an alternating current type electric heating rod, and is used for providing a heat source for the system.
As a practical way, the electric heater is connected to the preheater in the form of a flange.
As an implementation mode, the test container comprises a container upper flange and a container lower flange which are detachably connected, the container lower flange is provided with a cavity, a pipe blocking simulation body is arranged in the cavity, and an inlet of the test container is connected with an outlet of the preheater.
As a practical way, the vessel upper flange and the vessel lower flange are connected by a fastener and sealed by a metal-wrapped gasket.
As an implementation mode, the upper part of the container upper flange is provided with a small hole for monitoring the lateral pressure of each pipe plugging simulator, the lower part of the container upper flange is welded with a threaded joint for connecting the pipe plugging simulator, and the pipe plugging simulator is connected with the container upper flange in a threaded connection mode and is soaked in a medium in the cavity.
As an implementable mode, the pressure stabilizing device comprises a pressure stabilizer, a pressure stabilizing safety valve and a pressure stabilizer liquid level monitoring meter, wherein the upper end in the pressure stabilizer is filled with nitrogen, and the lower end of the pressure stabilizer is provided with medium water; the upper end of the voltage stabilizer is provided with the voltage stabilizing safety valve, and the side surface of the upper end and the lower end of the voltage stabilizer is provided with a hole for installing the liquid level monitoring meter of the voltage stabilizer.
As an implementable manner, the pressure stabilizer is of a column type structure and is used for relieving rapid fluctuation of system pressure, and an electric stop valve is arranged at the inlet end of the pressure stabilizer and is used for connecting or disconnecting the pressure stabilizer.
As an implementable manner, an electric control valve is provided between the cooler and the small circulation water tank, and the electric control valve is used for adjusting the pressure value of the whole system loop.
As an implementable manner, an inlet of the electric control valve is connected with a hot end outlet of the cooler, and an outlet of the electric control valve is connected with the small circulation water tank.
As an implementation mode, the upper end of the small circulation water tank is provided with an overflow hole, and a manual ball valve is arranged between the small circulation water tank and the large opening water discharge tank.
Compared with the prior art, the pressure and temperature transient test device for the pipe plugging process examination provided by the invention has the following beneficial effects:
the pressure and temperature transient test device for the pipe plugging process examination provided by the invention can be used for carrying out verification evaluation on the effectiveness of the pipe plugging process of the heat transfer pipe under the condition of large-range circulation of pressure and temperature at the same time, thereby optimizing the structure of a newly developed plug, improving the existing pipe plugging device and improving the conventional pipe plugging method.
Furthermore, the testing device is provided with a main loop mode without a plunger pump bypass branch, so that the flow change caused by the pressure circulation change of the pump outlet is prevented, and the heat exchange performance of the whole system is further stabilized.
Furthermore, the test device is provided with a heat regeneration device with a solenoid valve, and the heat regeneration solenoid valve and the bypass solenoid valve can be switched on and off automatically by setting fixed point temperature, so that the heat regeneration function of the heat regenerator can be selectively switched on or off.
Further, this testing device is equipped with snakelike preheater, and the medium flows through each electrical heating stick step by step and heaies up gradually, under the prerequisite of guaranteeing thermally equivalent, has reduced entire system's water container by a wide margin, has promoted whole testing device's the biggest speed of rising and falling the temperature.
Furthermore, the test device is provided with a test container capable of accommodating five test pieces simultaneously, each test piece is provided with an independent pressure monitoring point, and the pressure value of the secondary side of each test piece can be timely acquired and recorded.
Furthermore, the test device is provided with a sleeve type cooler, so that the medium at the outlet of the heat regenerator can be cooled to a certain temperature, and the influence on the running performance of the plunger pump caused by overhigh water temperature in the small circulating water tank is prevented.
Further, this test device is equipped with the pressure regulator device that can alleviate pressure rapid fluctuation, changes the terminal pressure value of entire system through the compression that the change of liquid level caused nitrogen gas in the stabiliser, and then realizes the function of steady voltage, and the liquid level of stabiliser can be solved through the differential pressure value that surveys.
Furthermore, the testing device is provided with an electric stop valve and an electric regulating valve, the electric stop valve can remotely realize the input or isolation of the voltage stabilizer, and the electric regulating valve can regulate the automatic opening and closing small control back pressure value according to PID (proportion integration differentiation) feedback, so that the purpose of uniform-speed pressure circulation is realized.
Furthermore, the test device is provided with a small circulation water tank and a large opening water discharge tank, and the water supply loops of the two water tanks are switched to meet the test requirements of different temperature circulation ranges.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is an overall schematic view of a pressure-temperature transient test device for pipe plugging process assessment according to an embodiment of the present invention;
fig. 2 is a side view of a heat recovery apparatus according to an embodiment of the present invention;
fig. 3 is a front view of a heat regenerator according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a preheating apparatus according to an embodiment of the present invention;
FIG. 5 is a schematic view of a test vessel provided in accordance with an embodiment of the present invention;
fig. 6 is a schematic diagram of a voltage stabilizer according to an embodiment of the present invention.
Description of the reference numerals:
1. a plunger pump; 2. a heat regenerative device; 3. a preheating device; 4. a test vessel; 5. a cooler; 6. a voltage stabilizer; 7. an electrically operated shutoff valve; 8. an electric control valve; 9. a small circulation water tank; 10. a large-opening water tank; 201. a heat regenerator; 202. a regenerative electromagnetic valve; 203. a bypass solenoid valve; 301. an electric heater; 302. a preheater; 303. preheating a safety valve; 401. an upper flange of the container; 402. a container lower flange; 403. a plugged tube simulator; 601. a voltage regulator; 602. a pressure-stabilizing safety valve; 603. and a voltage stabilizer liquid level monitoring meter.
Detailed Description
The following is a detailed description of the preferred embodiments.
As shown in fig. 1 to 6, the invention provides a pressure-temperature transient test device for a pipe plugging process examination, which comprises a plunger pump 1, a heat recovery device 2, a preheating device 3, a test container 4, a cooler 5, a pressure stabilizer 6, a small circulation water tank 9 and a large opening water tank 10. The device is a set of test device designed and built aiming at developing pressure and temperature transient tests.
As shown in fig. 1, the inlet of the plunger pump 1 is connected with a small circulation water tank 9 and a large opening water tank 10 (the small circulation water tank 9 and the large opening water tank 10 are connected to the inlet of the plunger pump 1 in parallel), the water outlets of the small circulation water tank 9 and the large opening water tank 10 are provided with manual ball valves, and the manual ball valves are manually switched to supply circulating water to the whole system according to the requirement of the lowest circulation temperature in the test, namely the manual ball valves are used for selectively replenishing the medium required by circulation to the small circulation water tank 9. The large-opening water drain tank 10 is connected with the inlet of the plunger pump 1 and used for ensuring that when the temperature of the medium in the small circulation water tank 9 rises, the medium with lower temperature can be directly provided for the whole loop through the large-opening water drain tank 10, and therefore the effect of accelerating the temperature reduction of the test container 4 is achieved. Plunger pump 1 is tertiary frequency conversion plunger pump, mainly provides the circulating drive power for the medium water, and the cold junction of backheating device 2 is being connected to the export of plunger pump 1, and backheating device 2 puts into or cuts off waste heat recovery and utilizes the function according to the temperature change rate requirement of difference. The cold end outlet of the heat recovery device 2 is connected with a preheating device 3, and the preheating device 3 automatically changes the internal heating power based on the feedback regulation principle according to different temperature change rate requirements. The outlet of the preheating device 3 is connected with a test container 4, 5 pipe plugging simulation bodies 403 are arranged in the test container 4, and whether the highest (low) circulating pressure and the highest (low) circulating temperature meet the requirements or not in the test process depends on the variation range of the pressure and the temperature in the test container 4. The outlet of the test container 4 is connected with the hot end of the heat regenerative device 2, the hot end outlet of the heat regenerative device 2 is connected with the hot side of the cooler 5, and circulating water is cooled by cooling water in the cooler 5 for heat exchange and then dissipates redundant heat to be close to the ambient temperature. The outlet of the cooler 5 is divided into two branches, one branch is a voltage stabilizing branch and is connected with an electric stop valve 7 and a voltage stabilizing device 6, the voltage stabilizing device 6 is used for relieving the rapid fluctuation of the pressure of the whole system, and the electric stop valve 7 is used for remotely putting into use or isolating and cutting off the voltage stabilizing device 6; the other branch is a water return branch and is connected with an electric regulating valve 8 and a small circulating water tank 9, the electric regulating valve 8 automatically changes the opening size according to different pressure change rate requirements based on a feedback regulation principle, and circulating water finally returns to the small circulating water tank 9 after being decompressed by the electric regulating valve 8 to complete circulation. The large-opening water tank 10 provides circulating water for the small circulating water tank 9, and the small circulating water tank 9 is provided with an overflow port to prevent water in the water tank from flowing out from the top of the water tank.
Preferably, the medium in the small circulation water tank 9 is deionized water, which is used for providing a water source for the whole system, and the medium water flows through the whole system under the action of the plunger pump 1 and finally circulates back to the small circulation water tank 9; the medium in the large open water tank 10 is deionized water, which is used for supplying the water to the small circulation water tank 9 and supplying the circulating water with lower temperature to the whole system in the temperature reduction stage.
As shown in fig. 2 and fig. 3, the heat recovery device 2 includes a heat recovery device 201, a heat recovery solenoid valve 202, and a bypass solenoid valve 203, where the heat recovery device 201 is in a pipe-in-pipe heat exchanger, an inner pipe medium is a cold fluid, an outer pipe medium is a hot fluid, and a fluid flow direction is arranged in a counter-flow manner; the regenerative solenoid valve 202 is a normally open solenoid valve and is installed on the outlet of the hot end of the regenerator, and the bypass solenoid valve 203 is a normally closed solenoid valve and is installed on the bypass of the regenerator. In the temperature rise stage, the heat recovery electromagnetic valve 202 is opened, the bypass electromagnetic valve 203 is closed, and the consumption of electric heating power is reduced through the waste heat recycling function of the heat regenerator 201; during the cooling phase, the bypass solenoid valve 203 is opened, and the regenerative solenoid valve 202 is opened or closed in stages, so that the cooling rate is increased by reducing or cutting off the regenerative capacity of the regenerator 201.
As shown in fig. 4, the preheating device 3 includes an electric heater 301, a preheater 302, and a preheating safety valve 303, the electric heater 301 is an alternating current type electric heating rod, a heating resistor is disposed inside the heating rod, the resistor conducts heat to a metal outer sleeve after heating, and the outer sleeve finally transfers heat to a medium in the preheater 302 in a heat convection manner, thereby providing a heat source for the entire system. The preheater 302 is in a structure form of a coiled pipe heat exchanger and is connected with the electric heater 301 in a flange mode, media sequentially flow through the metal outer sleeve of each electric heating rod to be heated step by step, a preheating safety valve 303 is arranged near the outlet of the preheater 302, and when the preheater 302 is in overpressure, a spring inside the preheating safety valve 303 can jump to complete pressure relief.
As shown in fig. 5, the test container 4 includes a container upper flange 401, a container lower flange 402, and a plugged pipe simulator 403, the container lower flange 402 has a cavity, and the plugged pipe simulator 403 is installed in the cavity. The vessel upper flange 401 and the vessel lower flange 402 are connected by bolt and nut fasteners, and the sealing form adopts a metal winding gasket for sealing. The upper portion of the container upper flange 401 is provided with a small hole for monitoring the pressure of the pipe side of each pipe blocking simulator 403, the lower portion of the container upper flange 401 is welded with a threaded joint for connecting the pipe blocking simulators 403, the pipe blocking simulators 403 are connected with the container upper flange 401 in a threaded connection mode and soaked in media of a cavity in the container lower flange 402, and the whole test container 4 is used for providing a pressure-temperature circulating test environment for the pipe blocking simulators.
As shown in fig. 6, the pressure stabilizer 6 includes a pressure stabilizer 601, a pressure stabilizer relief valve 602, and a pressure stabilizer level monitoring meter 603. The pressure stabilizer 601 is a vertical cylindrical pressure vessel, nitrogen is arranged at the upper part in the vessel, water is arranged at the lower part in the vessel, and the strong compressibility of the nitrogen can effectively relieve the rapid fluctuation of the pressure of the whole system. The upper end of stabiliser 601 is equipped with steady voltage relief valve 602, and when stabiliser 601 superpressure, the inside spring of steady voltage relief valve 602 can take off and jump and accomplish the pressure release, and stabiliser liquid level monitoring table 603 is differential pressure transmitter, can take the formula into according to the differential pressure value of surveying and deduce and try to get the liquid level value to in good time monitor the liquid level.
The above description is only for the specific embodiments 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 are also within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (15)
1. The pressure and temperature transient test device for the pipe blocking process examination is characterized by comprising a plunger pump (1), a backheating device (2), a preheating device (3), a test container (4), a cooler (5), a pressure stabilizer (6) and a small circulation water tank (9), wherein an outlet of the plunger pump (1) is connected with a cold end of the backheating device (2), a cold end outlet of the backheating device (2) is connected with the preheating device (3), an outlet of the preheating device (3) is connected with the test container (4), an outlet of the test container (4) is connected with a hot end of the backheating device (2), a hot end outlet of the backheating device (2) is connected with a hot end of the cooler (5), a hot end outlet of the cooler (5) is divided into a pressure stabilizing branch and a water return branch, the pressure stabilizing branch is connected with the pressure stabilizer (6), the water return branch is connected with the small circulation water tank (9), and the small circulation water tank (9) is connected with an inlet of the plunger pump (1).
2. The pressure-temperature transient test device for pipe plugging process assessment according to claim 1, further comprising a large open water tank (10), wherein the large open water tank (10) is connected with the small circulation water tank (9) to provide circulating water supplement.
3. The pressure temperature transient test device for pipe plugging process examination as claimed in claim 2, wherein said large open drain tank (10) is connected to the inlet of said plunger pump (1) for ensuring that when the medium temperature in said small circulation water tank (9) increases, the medium with lower temperature is directly supplied to the whole loop through said large open drain tank (10) so as to accelerate the cooling down of said test vessel (4).
4. The pressure temperature transient test device for the pipe plugging process examination is characterized in that the heat regenerator device (2) comprises a heat regenerator (201), a heat regenerator solenoid valve (202) and a bypass solenoid valve (203), wherein a cold end inlet of the heat regenerator (201) is connected with an outlet of the plunger pump (1), a hot end inlet of the heat regenerator (201) is connected with an outlet of the test container (4), the heat regenerator solenoid valve (202) is installed at a hot end outlet of the heat regenerator (201) and is connected with a hot end inlet of the cooler (5), and the bypass solenoid valve (203) is installed on a bypass pipeline of the heat regenerator and is used for cutting off a heat regenerating function of the heat regenerator (201).
5. The pressure temperature transient test device for the pipe plugging process examination as claimed in claim 1, wherein the preheating device (3) comprises an electric heater (301), a preheater (302) and a preheating safety valve (303), the electric heater (301) is connected with the preheater (302), an inlet of the preheater (302) is connected with an outlet of a cold end of the regenerator (201), and the preheating safety valve (303) is connected near an outlet of an upper end.
6. The pressure temperature transient test device for the pipe plugging process examination as claimed in claim 5, wherein the electric heater (301) is an alternating current type electric heating rod for providing a heat source for the system.
7. The pressure-temperature transient test device for pipe plugging process assessment according to claim 5, wherein the electric heater (301) and the preheater (302) are connected through a flange.
8. The pressure temperature transient test device for the pipe plugging process examination as claimed in claim 1, wherein the test container (4) comprises a container upper flange (401) and a container lower flange (402) which are detachably connected, the container lower flange (402) is provided with a cavity, a pipe plugging simulator (403) is arranged in the cavity, and an inlet of the test container (4) is connected with an outlet of the preheater (302).
9. The pressure-temperature transient test device for pipe plugging process examination of claim 8, wherein the vessel upper flange (401) and the vessel lower flange (402) are connected by a fastener and sealed by a metal wound gasket.
10. The pressure and temperature transient test device for the pipe plugging process examination as claimed in claim 8, wherein a small hole for monitoring the pipe side pressure of each pipe plugging simulation body (403) is formed in the upper part of the container upper flange (401), a threaded joint for connecting the pipe plugging simulation bodies (403) is welded to the lower part of the container upper flange (401), and the pipe plugging simulation bodies (403) are connected with the container upper flange (401) in a threaded connection mode and soaked in the medium in the cavity.
11. The pressure-temperature transient test device for the pipe plugging process examination as claimed in claim 1, wherein the pressure stabilizer (6) comprises a pressure stabilizer (601), a pressure-stabilizing safety valve (602) and a pressure stabilizer liquid level monitoring meter (603), the upper end of the inside of the pressure stabilizer (601) is filled with nitrogen, and the lower end of the inside of the pressure stabilizer is provided with medium water; the upper end of the voltage stabilizer (601) is provided with the voltage stabilizing safety valve (602), and the upper end and the lower end of the voltage stabilizer (601) are provided with holes on the side surfaces of the liquid level monitoring meter (603).
12. The pressure temperature transient test device for the pipe plugging process examination as claimed in claim 11, wherein the pressure stabilizer (601) is of a column structure and is used for relieving rapid fluctuation of system pressure, and an electric cut-off valve (7) is installed at an inlet end of the pressure stabilizer (601) and is used for connecting or disconnecting the pressure stabilizer (601).
13. The pressure and temperature transient test device for the pipe plugging process examination as claimed in claim 1, wherein an electric regulating valve (8) is arranged between the cooler (5) and the small circulation water tank (9), and the electric regulating valve (8) is used for regulating the pressure value of the whole system loop.
14. The pressure temperature transient test device for the pipe plugging process examination as claimed in claim 13, wherein an inlet of the electric control valve (8) is connected with a hot end outlet of the cooler (5), and an outlet of the electric control valve (8) is connected with the small circulation water tank (9).
15. The pressure and temperature transient test device for the pipe plugging process examination as claimed in claim 1, wherein an overflow hole is formed in the upper end of the small circulation water tank (9), and a manual ball valve is arranged between the small circulation water tank (9) and the large opening water tank (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210729195.8A CN115206562A (en) | 2022-06-24 | 2022-06-24 | Pressure and temperature transient test device for pipe plugging process examination |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210729195.8A CN115206562A (en) | 2022-06-24 | 2022-06-24 | Pressure and temperature transient test device for pipe plugging process examination |
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| CN115206562A true CN115206562A (en) | 2022-10-18 |
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| CN202210729195.8A Pending CN115206562A (en) | 2022-06-24 | 2022-06-24 | Pressure and temperature transient test device for pipe plugging process examination |
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