CN214726677U - Insulating repair device for heating pipe of electric heater of voltage stabilizer of nuclear power station - Google Patents
Insulating repair device for heating pipe of electric heater of voltage stabilizer of nuclear power station Download PDFInfo
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- CN214726677U CN214726677U CN202023291597.XU CN202023291597U CN214726677U CN 214726677 U CN214726677 U CN 214726677U CN 202023291597 U CN202023291597 U CN 202023291597U CN 214726677 U CN214726677 U CN 214726677U
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- heat insulation
- electric heater
- fan motor
- temperature controller
- fixing plate
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Abstract
The utility model relates to the field of electrical equipment maintenance, in particular to an insulation repair device for a heating pipe of an electric heater of a voltage stabilizer of a nuclear power station, which comprises an upper component, a control module, a lower component, a fan motor, a heat insulation fixing plate, a heat insulation outer wall, fan blades, a heating inner container and a fixing bracket; the upper assembly is connected with the lower assembly, the control module is connected with the top of the upper assembly, the upper assembly comprises a fan motor, a heat insulation fixing plate, a heat insulation outer wall and fan blades, the heat insulation fixing plate is connected with the top of the heat insulation outer wall, the fan motor is connected with the bottom surface of the heat insulation fixing plate, and the fan blades are connected with the lower part of the fan motor; the lower component comprises a heating inner container and a fixed support, and the heating inner container is connected with the fixed support. The utility model discloses can restore stabiliser electric heater heating pipe insulating, promote the heater performance, guarantee the normal operating of stabiliser, reduce cost of maintenance simultaneously, increase the operational reliability of nuclear power station.
Description
Technical Field
The utility model relates to an electrical equipment maintenance field, concretely relates to nuclear power station stabiliser electric heater heating pipe insulation repair device.
Background
The voltage stabilizer is an important component of a loop system of a nuclear power station, is provided with an electric heater group, is used as a component of a voltage stabilizing system, and is used for establishing the pressure of the loop under the heating working condition, maintaining the pressure under the steady state, limiting the pressure deviation under the transient working condition and cooling the voltage stabilizer at a set rate when a reactor device is cooled. The heating of the voltage stabilizer and the establishment of the pressure are realized by the electric heater of the voltage stabilizer, so the running state of the electric heater of the voltage stabilizer directly influences the performance of the voltage stabilizer and the working condition of a loop. At present, the end part of a heating pipe of a common voltage stabilizer electric heater in China is filled with an insulating material so as to ensure the insulating property of the electric heater. Because of the influence of high temperature in the nuclear island, high radioactivity, the insulating material of stabiliser electric heater heating tube tip can produce fracture or ageing phenomenon to reduce electric heater's performance, influence the stabiliser function, lead to the stabiliser to be unusable when serious, the unit shuts down and stops piling. When the insulation of the end part of the heating pipe of the electric heater of the voltage stabilizer is reduced, the maintenance strategy adopted at the present stage is generally the replacement of the whole group, and the problems of long manufacturing period and high maintenance cost exist.
Therefore, the insulation repair device for the heating pipe of the electric heater of the voltage stabilizer in the nuclear power station is needed to solve the defects in the prior art.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a nuclear power station stabiliser electric heater heating pipe insulation repair device can restore stabiliser electric heater heating pipe insulation, promotes the heater performance, guarantees the normal operating of stabiliser, reduces cost of maintenance simultaneously, increases the operational reliability of nuclear power station.
Realize the utility model discloses the technical scheme of purpose:
a heating pipe insulation repairing device of an electric heater of a voltage stabilizer of a nuclear power station comprises an upper component, a control module, a lower component, a fan motor, a heat insulation fixing plate, a heat insulation outer wall, fan blades, a heating inner container and a fixing support;
the upper assembly is connected with the lower assembly, the control module is connected with the top of the upper assembly, the upper assembly comprises a fan motor, a heat insulation fixing plate, a heat insulation outer wall and fan blades, the heat insulation fixing plate is connected with the top of the heat insulation outer wall, the fan motor is connected with the bottom surface of the heat insulation fixing plate, and the fan blades are connected with the lower part of the fan motor; the lower component comprises a heating inner container and a fixed support, and the heating inner container is connected with the fixed support.
The bottom of the heat-insulating outer wall is welded and fixed with the upper flange.
The bottom of the heating inner container is welded and fixed with the fixed support and the lower flange.
And a plurality of upper connecting holes are uniformly formed in the upper flange.
And a plurality of lower connecting holes are uniformly formed in the lower flange.
The fixed support has a plurality of.
The control module comprises a temperature controller, a power switch, an air switch, a fuse, a contactor, a temperature measuring resistor, a contactor contact and an alternating current power supply, wherein the power switch is connected with the 380V alternating current power supply; the fuse is connected with the power switch and the contactor contact; the air switch is connected with the single-phase power supply zero line of the power switch; the fan motor is connected with the air switch; an I1 terminal of the temperature controller is connected with a single phase of a 380V alternating current power supply, an I2 terminal of the temperature controller is connected with a zero line of the 380V alternating current power supply, an Out1 terminal of the temperature controller is connected with an A1 terminal of the contactor, and an Out2 terminal of the temperature controller is connected with an A2 terminal of the contactor; the temperature measuring resistor is connected with terminals P3, P2 and P1 of the temperature controller.
The utility model has the advantages of:
(1) the utility model discloses a nuclear power station stabiliser electric heater heating pipe insulation repair device can realize stabiliser electric heater heating pipe end insulation repair, promotes the electric heater performance; the insulation of the end part of the heating pipe of the electric heater of the voltage stabilizer is repaired by refilling the insulating material and heating and baking, so that the reliability is high;
(2) the utility model discloses an insulation repair device for a heating pipe of an electric heater of a voltage stabilizer of a nuclear power station, which can reduce the maintenance cost caused by replacement due to insulation reduction of the heater; meanwhile, the maintenance time caused by the fact that the heater is insulated and needs to be replaced can be saved, and therefore the major repair critical path time of the nuclear power station unit is shortened;
(3) the utility model discloses an insulation repair device for a heating pipe of an electric heater of a voltage stabilizer of a nuclear power station, which has low design and manufacturing cost, convenient assembly and disassembly and convenient maintenance;
(4) the utility model discloses a nuclear power station stabiliser electric heater heating pipe insulation repair device, use the fan to produce internal air circulation, the material is heated evenly when making insulation repair, has improved insulation repair's success rate greatly;
(5) the utility model discloses a thermal insulation fixing plate and thermal insulation outer wall of the upper component of the insulating repair device of the heating pipe of the electric heater of the voltage stabilizer of the nuclear power station are made of thermal insulation materials, thereby improving the heating performance of the device and prolonging the service life of various elements;
(6) the utility model discloses a nuclear power station stabiliser electric heater heating pipe insulation repair device application scope is extensive, can be used to the stabiliser electric heater of other nuclear power stations.
Drawings
Fig. 1 is a schematic view of an insulation repairing device for a heating pipe of an electric heater of a voltage stabilizer of a nuclear power station provided by the present invention;
fig. 2 is an electrical schematic diagram of a control module of an insulation repair device for a heating pipe of an electric heater of a voltage stabilizer of a nuclear power station provided by the present invention;
FIG. 3 is an assembly view of the insulating repair device for the heating pipe of the electric heater of the voltage stabilizer in the nuclear power station provided by the present invention;
in the figure: 1-an upper assembly; 2-a control module; 3-a lower assembly; 4-a fan motor; 5-heat insulation fixing plate; 6-heat preservation outer wall; 7-upper flange; 8-upper connection hole; 9-fan blades; 10-heating the inner container; 11-lower flange; 12-lower connection hole; 13-fixing the bracket; 14-a temperature controller; 15-power switch; 16-an air switch; 17-a fuse; 18-a contactor; 19-temperature measuring resistor; 20-contactor contacts; 21-alternating current power supply; 22-an electric heating tube; 23-an insulation repair device; 24-a heater flange; 25-mounting a spare hole; 26-connecting bolt.
Detailed Description
In order to make those skilled in the art better understand the present invention, the technical solutions in the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be apparent that the embodiments described below are only some, but not all embodiments of the present invention. Based on the embodiments recorded in the present invention, all other embodiments obtained by those skilled in the art without creative efforts are all within the scope of the present invention.
As shown in figure 1, the utility model provides a nuclear power station stabiliser electric heater heating pipe insulation repair device, the device include upper portion subassembly 1, control module 2, lower part subassembly 3, fan motor 4, thermal-insulated fixed plate 5, heat preservation outer wall 6, upper portion flange 7, upper portion connecting hole 8, flabellum 9, heating inner bag 10, lower part flange 11, lower part connecting hole 12, fixed bolster 13, temperature controller 14, switch 15, air switch 16, fuse 17, contactor 18
The upper assembly 1 is connected with the lower assembly 3, and the control module 2 is connected with the top of the upper assembly 1.
The upper assembly 1 comprises a heat insulation fixing plate 5 and a heat insulation outer wall 6, and the heat insulation fixing plate 5 is connected to the top of the heat insulation outer wall 6;
the fan motor 4 is connected with the bottom surface of the heat insulation fixed plate 5; the fan blade 9 is connected with the lower part of the fan motor 4;
the bottom of the heat-insulating outer wall 6 is welded and fixed with the upper flange 7; eight upper connecting holes 8 are formed in the upper flange 7, and the difference between every two connecting holes 8 is 45 degrees;
the lower component 3 comprises a heating inner container 10, a lower flange 11 and a fixed support 13, the heating inner container 10 is connected with the lower flange 11, and the fixed support 13 is connected with the heating inner container 10 and the lower flange 11;
3 fixed supports 13 are provided;
the heating inner container 10 is connected with a lower flange 11, eight lower connecting holes 12 are formed in the lower flange 11, and the difference between every two connecting holes 12 is 45 degrees;
as shown in fig. 2, the control module 2 includes a temperature controller 14, a power switch 15, an air switch 16, a fuse 17, a contactor 18, a temperature measuring resistor 19, a contactor contact 20 and an ac power supply 21, wherein the power switch 15 is connected with the 380V ac power supply 21; the fuse 17 is connected with the power switch 15 and the contactor contact 20; the air switch 16 is connected with the single-phase and power supply zero line of the power switch 15; the fan motor 4 is connected with an air switch 16; an I1 terminal of the temperature controller 14 is connected with a single phase of a 380V alternating current power supply 21, an I2 terminal of the temperature controller 14 is connected with a zero line of the 380V alternating current power supply 21, an Out1 terminal of the temperature controller 14 is connected with an A1 terminal of the contactor 18, and an Out2 terminal of the temperature controller 14 is connected with an A2 terminal of the contactor 18; the temperature measuring resistor 19 is connected to terminals P3, P2, and P1 of the temperature controller 14.
As shown in fig. 3, a method for repairing an insulation repair device of a heating pipe of an electric heater of a voltage stabilizer in a nuclear power plant includes the following steps:
firstly, connecting upper connecting holes 8 and lower connecting holes 12 of an insulation repair device 23 one by bolts, connecting a fixing support 13 with mounting spare holes 25 of a heater flange 24 by bolts 26, and fixing the insulation repair device 23 on a heater, wherein all electric heating pipes 22 of the heater are positioned in a heating inner container 10 of the device;
secondly, connecting the insulation repair device 23 with a 380V alternating current power supply 21, closing a power switch 15, closing an air switch 16, electrifying a temperature controller 14 at the moment, electrifying a fan motor 4 to start working, and internally circulating air in the device to ensure that the temperature in the device is uniform and the end part of a heating pipe is prevented from being heated unevenly due to local overheating; closing the fuse 17, setting the target temperature on the temperature controller 14 to be 80 ℃, setting the heating time to be 2h, wherein at the moment, because the temperature measured by the temperature measuring resistor 19 is lower than 80 ℃, the terminal Out1 and the terminal Out2 of the temperature controller 14 output 24V direct-current voltage, the contactor 18 is electrified, the contact 20 of the contactor is changed from an open circuit state to a closed state, the heating inner container 10 starts to work, and the temperature of air in the device is gradually increased and stabilized at 80 ℃; after heating for 2 hours, setting the target temperature on the temperature controller 14 to be 100 ℃ and the heating time to be 2 hours; after heating for 2h, setting the target temperature on the temperature controller 14 to be 150 ℃, and continuing heating for 1 h;
step three, after the heating is finished, the air switch 16, the fuse 17 and the power switch 15 are disconnected; and (3) dismantling the connecting bolts 26 between the device fixing bracket 13 and the mounting spare holes 25 of the heater flange 24, and removing the voltage stabilizer electric heating pipe repairing device 23.
The present invention has been described in detail with reference to the drawings and examples, but the present invention is not limited to the above examples, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art. The present invention can adopt the prior art for the content which is not described in detail in the present invention.
Claims (7)
1. The utility model provides a stabiliser electric heater heating pipe insulation repair device which characterized in that: the device comprises an upper component (1), a control module (2) and a lower component (3);
the upper assembly (1) is connected with the lower assembly (3), the control module (2) is connected with the top of the upper assembly (1), the upper assembly (1) comprises a fan motor (4), a heat insulation fixing plate (5), a heat insulation outer wall (6) and fan blades (9), the heat insulation fixing plate (5) is connected with the top of the heat insulation outer wall (6), the fan motor (4) is connected with the bottom surface of the heat insulation fixing plate (5), and the fan blades (9) are connected with the lower portion of the fan motor (4); the lower component (3) comprises a heating inner container (10) and a fixed support (13), and the heating inner container (10) is connected with the fixed support (13).
2. The device of claim 1, wherein the device comprises: the bottom of the heat-insulating outer wall (6) is welded and fixed with the upper flange (7).
3. The device of claim 2, wherein the device comprises: the bottom of the heating inner container (10) is welded and fixed with the fixed support (13) and the lower flange (11).
4. The device of claim 3, wherein the device comprises: the upper flange (7) is uniformly provided with a plurality of upper connecting holes (8).
5. The device of claim 4, wherein the device comprises: the lower flange (11) is uniformly provided with a plurality of lower connecting holes (12).
6. The device of claim 5, wherein the device comprises: the number of the fixed brackets (13) is multiple.
7. The device of claim 6, wherein the device comprises: the control module (2) comprises a temperature controller (14), a power switch (15), an air switch (16), a fuse (17), a contactor (18), a temperature measuring resistor (19), a contactor contact (20) and an alternating current power supply (21), wherein the power switch (15) is connected with the 380V alternating current power supply (21); the fuse (17) is connected with the power switch (15) and the contactor contact (20); the air switch (16) is connected with the single-phase power supply zero line of the power switch (15); the fan motor (4) is connected with an air switch (16); an I1 terminal of the temperature controller (14) is connected with a single phase of a 380V alternating current power supply (21), an I2 terminal of the temperature controller (14) is connected with a zero line of the 380V alternating current power supply (21), an Out1 terminal of the temperature controller (14) is connected with an A1 terminal of the contactor (18), and an Out2 terminal of the temperature controller (14) is connected with an A2 terminal of the contactor (18); the temperature measuring resistor (19) is connected to terminals P3, P2 and P1 of the temperature controller (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023291597.XU CN214726677U (en) | 2020-12-31 | 2020-12-31 | Insulating repair device for heating pipe of electric heater of voltage stabilizer of nuclear power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023291597.XU CN214726677U (en) | 2020-12-31 | 2020-12-31 | Insulating repair device for heating pipe of electric heater of voltage stabilizer of nuclear power station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214726677U true CN214726677U (en) | 2021-11-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023291597.XU Active CN214726677U (en) | 2020-12-31 | 2020-12-31 | Insulating repair device for heating pipe of electric heater of voltage stabilizer of nuclear power station |
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| Country | Link |
|---|---|
| CN (1) | CN214726677U (en) |
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- 2020-12-31 CN CN202023291597.XU patent/CN214726677U/en active Active
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