CN215523745U - Fan air heater of thermal power generation system - Google Patents
Fan air heater of thermal power generation system Download PDFInfo
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- CN215523745U CN215523745U CN202121340392.8U CN202121340392U CN215523745U CN 215523745 U CN215523745 U CN 215523745U CN 202121340392 U CN202121340392 U CN 202121340392U CN 215523745 U CN215523745 U CN 215523745U
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Abstract
The utility model discloses a fan air heater of a thermal power generation system, which comprises a steam supply pipeline, a first box body, a heat exchange pipe set and a second box body, wherein: the steam supply pipeline is communicated with the first box body, the heat exchange tube group is arranged between the first box body and the second box body, the first end of the heat exchange tube group is communicated with the first box body, and the second end of the heat exchange tube group is communicated with the second box body; the steam supply pipeline is provided with a first valve, the first box body is provided with a pressure relief opening, the pressure relief opening is provided with a second valve, the second box body is provided with a drain opening, the drain opening is provided with a third valve, the first valve is closed, and the second valve is opened under the condition that the third valve is opened, so that the drain opening and the pressure relief opening are communicated with the atmosphere. According to the scheme, the problem that under a low-temperature environment, condensed water in the fan air heater cannot be discharged to cause frost cracking can be solved.
Description
Technical Field
The application relates to the technical field of thermal power generation, in particular to a fan air heater of a thermal power generation system.
Background
The air heater is a heating and ventilating terminal device which takes various heating media (such as steam) as media, and especially in some severe cold regions, the air heater plays an important role in field production (such as a thermal power plant).
The steam is conveyed into the steam supply header firstly and then conveyed into the heat exchange tube set to exchange heat with external cold air, and the steam in the heat exchange tube set is condensed into condensed water after heat exchange and then enters the drain tank. When the air heater needs to be stopped for maintenance, the steam supply header needs to be stopped from being conveyed with steam, and a drain port on the drain tank is opened to drain condensed water outwards. Because a part of steam still exists in the steam supply header, after the steam is condensed into condensed water, the pressure in the steam supply header is reduced, and the drain port is communicated with the atmosphere, so that the condensed water in the heat exchange tube set and the drain header cannot be discharged under the action of negative pressure generated in the steam supply header. The problem of frost cracking of the heat exchange tube set and the drainage header is caused because the condensed water can be condensed into ice at low temperature. It can be seen that the air heater related to the related art has a problem that condensed water cannot be discharged under a low-temperature environment, so that frost cracking is caused.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a fan air heater of a thermal power generation system, which aims to solve the problem of frost cracking caused by the fact that condensed water in the air heater cannot be discharged in a low-temperature environment.
In order to solve the above problems, the following technical solutions are adopted in the present application:
the utility model provides a thermal power system's fan air heater, includes steam supply pipeline, first box, heat exchange tube group and second box, wherein:
the steam supply pipeline is communicated with the first box body, the heat exchange tube group is arranged between the first box body and the second box body, the first end of the heat exchange tube group is communicated with the first box body, and the second end of the heat exchange tube group is communicated with the second box body;
the steam supply pipeline is provided with a first valve, the first box body is provided with a pressure relief opening, the pressure relief opening is provided with a second valve, the second box body is provided with a drain opening, the drain opening is provided with a third valve, the first valve is closed, and under the condition that the third valve is opened, the second valve is opened, so that the drain opening and the pressure relief opening are communicated with the atmosphere.
The technical scheme adopted by the application can achieve the following beneficial effects:
the fan heater of the thermal power generation system disclosed in the embodiment of the application is improved by the related technology, the first valve is arranged on the steam supply pipeline, the pressure relief opening is formed in the first box body, the second valve is arranged on the pressure relief opening, and the third valve is arranged on the drain opening of the second box body, so that when the fan heater of the thermal power generation system carries out pressure relief and drainage, the first valve is closed, the second valve is opened when the third valve is opened, the first box body, the heat exchange pipe group and the second box body are communicated with the atmosphere, negative pressure is prevented from being generated in the first box body after high-temperature steam in the first box body is condensed into condensed water, the condensed water in the first box body, the heat exchange pipe group and the second box body cannot be discharged under the action of the negative pressure, and the condensed water remained in the first box body, the heat exchange pipe group and the second box body is effectively prevented from being condensed into ice under the low-temperature environment, and the first box body, the heat exchange tube group and the second box body are frost-cracked, so that the damage of the fan air heater is effectively prevented.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and not to limit the utility model. In the drawings:
fig. 1 is a schematic structural diagram of a fan heater of a thermal power generation system disclosed in the present invention.
Description of reference numerals:
100-steam supply pipeline, 110-steam supply main pipe, 120-steam supply branch pipe, 130-first valve,
200-a first box body, 210-a second valve,
300-heat exchange tube group,
400-a second box body, 410-a third valve,
500-first temperature sensor,
610-hydrophobic collection container, 620-hydrophobic pipe, 630-fourth valve,
700-a draft tube.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the utility model, and not restrictive of the full scope of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The technical solutions disclosed in the embodiments of the present invention are described in detail below with reference to the accompanying drawings.
Referring to fig. 1, an embodiment of the present invention discloses a fan heater of a thermal power generation system. The fan air heater of the thermal power generation system is used for heating the inlet air conveyed by the air inlet machine of the thermal power generation system, so that the inlet air conveyed by the air inlet machine can be preheated in advance, and the aim of quickly participating in high-efficiency combustion is fulfilled.
The disclosed fan heater includes a steam supply line 100, a first case 200, a heat exchange tube group 300, and a second case 400.
The steam supply line 100 may be a line for supplying high-temperature steam. The steam supply pipeline 100 is communicated with an external device for generating high-temperature steam, and the device for generating high-temperature steam can be a steam generator or a boiler. The steam supply line 100 is communicated with the first tank 200, and the steam supply line 100 may supply high-temperature steam to the first tank 200.
The steam supply pipeline 100 is provided with a first valve 130, the first valve 130 has an open state and a closed state, and the first valve 130 can control the on-off of the high-temperature steam supplied to the first box 200 by the steam supply pipeline 100.
The first tank 200 is respectively communicated with the steam supply pipeline 100 and the heat exchange tube group 300, and the first tank 200 collects the high-temperature steam delivered from the steam supply pipeline 100 and delivers the collected high-temperature steam to the heat exchange tube group 300.
The first casing 200 is opened with a pressure relief port, and the pressure relief port can discharge high-temperature steam in the first casing 200 to the outside. The pressure relief opening is fitted with a second valve 210, the second valve 210 having an open state and a closed state, the second valve 210 being capable of controlling the opening and closing of the pressure relief opening. When the second valve 210 is opened, the first casing 200 is communicated with the atmosphere through the pressure relief port, so that the high-temperature steam inside the first casing 200 is discharged to the outside.
The heat exchange tube set 300 is a device for exchanging heat between the intake air delivered by the air intake machine and the high-temperature steam. The heat exchange tube group 300 is disposed between the first case 200 and the second case 400, and a first end of the heat exchange tube group 300 is communicated with the first case 200 and a second end of the heat exchange tube group 300 is communicated with the second case 400.
The high-temperature steam inside the heat exchange tube set 300 exchanges heat with the intake air delivered by the air intake machine and is condensed into condensed water, and the condensed water flows to the second tank 400 through the heat exchange tube set 300. The heat exchange tube set 300 may be made of a high thermal conductivity material, such as a metal material.
The second tank 400 is a part that collects condensed water generated after heat exchange of high-temperature steam in the heat exchange tube set 300, and the second tank 400 may be disposed below the heat exchange tube set 300, and the condensed water may be collected in the second tank 400 by gravity. The second tank 400 is opened with a drain port, and the drain port can drain the condensed water in the second tank 400 to the outside. The drain port may be provided at the bottom of the second casing 400. The drain may be fitted with a third valve 410, the third valve 410 having an open state and a closed state, the third valve 410 may control the opening and closing of the drain. When the third valve is opened, the second tank 400 is communicated with the atmosphere through the drain port, so that the condensed water in the second tank 400 is discharged to the outside.
The embodiment of the application discloses thermal power system's fan air heater's working process as follows:
the steam supply pipeline 100 is communicated with the first tank 200, and the high-temperature steam is converged in the first tank 200 through the steam supply pipeline 100. The first case 200 communicates with the heat exchange tube set 300 such that high-temperature steam within the first case 200 enters the heat exchange tube set 300. Since the high-temperature steam in the heat exchange tube group 300 exchanges heat with the intake air delivered by the air intake machine, the high-temperature steam in the heat exchange tube group 300 is condensed into condensed water, and the condensed water flows into the second tank 400 communicated with the heat exchange tube group 300 through the heat exchange tube group 300. Since the first valve 130 is provided on the steam supply line 100, the second valve 210 is provided at the pressure relief port of the first tank 200, and the third valve 410 is provided at the drain port of the second tank 400. Thus, with first valve 130 closed and third valve 410 open, second valve 210 is opened such that both the drain and relief ports are open to atmosphere.
The fan heater of the thermal power system disclosed in the embodiment of the present application is improved by the related art, the first valve 130 is disposed on the steam supply pipeline 100, the pressure relief opening is formed on the first box 200, the second valve 210 is further disposed on the pressure relief opening, and the third valve 410 is disposed on the drain opening of the second box 400, so that when the fan heater of the thermal power system performs pressure relief drainage, the first valve 130 is closed, the second valve 210 is opened while the third valve 410 is opened, and thus the first box 200, the heat exchange tube group 300, and the second box 400 are all communicated with the atmosphere, thereby preventing high-temperature steam in the first box 200 from generating negative pressure in the first box 200 after being condensed into water, preventing condensed water in the first box 200, the heat exchange tube group 300, and the second box 400 from being unable to be drained under the effect of negative pressure, and effectively preventing the condensed water remaining in the first box 200, the heat exchange tube group 300, and the second box 400 from being unable to be drained under the low-temperature environment, The condensed water in the heat exchange tube group 300 and the second case 400 is condensed into ice to cause a problem in that the first case 200, the heat exchange tube group 300, and the second case 400 are frozen, thereby effectively preventing damage of the fan heater.
During a specific operation, due to some factors, such as an excessive temperature of steam entering the steam supply pipeline 100, the temperature of the steam entering the first tank 200 and the heat exchange tube group 300 is too high, and a part of the steam with the excessive temperature enters condensed water in the second tank 400, so that water hammer is generated in the second tank 400, and problems such as welding of the fan heater and leakage of a valve can be caused. Based on this, in an optional scheme, the fan heater of the thermal power generation system disclosed in the embodiment of the present application may further include a first temperature sensor 500, a temperature reduction device, and a control device.
The cooling device is connected with the steam supply pipeline 100, and the cooling device can cool the high-temperature steam in the steam supply pipeline 100, so that the temperature of the high-temperature steam meets the requirement of entering the first box body 200. Wherein, the cooling equipment can be used for cooling the high-temperature steam in a water cooling mode and can also be used for cooling in an air cooling mode.
The first casing 200 may be further provided with a first temperature sensor 500, the first temperature sensor 500 being for detecting a first temperature of steam in the first casing 200, and the first temperature sensor 500 may be provided inside the first casing 200. The first temperature sensor 500 may be a temperature sensor that detects temperature by infrared rays, or may be a temperature sensor that detects temperature by a thermal resistor.
The control device is connected with the cooling device and the first temperature sensor 500 respectively, and the control device can control the cooling device to cool the high-temperature steam in the steam supply pipeline 100. The control device is further connected to the first temperature sensor 500, and accordingly can control the first temperature according to the first temperature detected by the first temperature sensor 500.
In a specific working process, when the first temperature sensor 500 detects that the first temperature of the steam in the first box 200 is greater than or equal to a first preset temperature value, the control device controls the cooling device to cool the high-temperature steam in the steam supply pipeline 100 until the first temperature of the high-temperature steam in the first box 200 is detected to be less than the first preset temperature value, so that the high-temperature steam in the steam supply pipeline 100 meets the requirement of entering the first box 200.
Through being connected cooling device and steam supply pipeline 100, make cooling device can cool down the steam of the high temperature in the steam supply pipeline 100, and then make the high temperature steam in the steam supply pipeline 100 reduce to the requirement that satisfies the entering first box 200, thereby avoided the steam of the high temperature to get into first box 200, prevented effectively that the steam of the high temperature can't condense into water and get into second box 400 in heat exchange tube set 300, produce the water hammer at second box 400, and lead to fan heater open welding and valve to reveal the scheduling problem.
In a particular implementation, the temperature reduction device may include a hydrophobic collection vessel 610, a hydrophobic tube 620, and a fourth valve 630. Hydrophobic collection container 610 is used for collecting the comdenstion water that hydrophobic mouthful flowed out, and hydrophobic collection container 610 can locate the below of hydrophobic mouthful, and the comdenstion water that hydrophobic collection container 610 was collected can cool down to the high temperature steam in the steam supply pipeline 100. The drain pipe 620 is connected between the drain collecting container 610 and the steam supply pipe 100, and the drain pipe 620 is a passage through which the condensed water of the drain collecting container 610 is transferred to the steam supply pipe 100.
In a general case, a water pump may be disposed on the drain pipe 620, and the condensed water in the drain collecting container 610 may be transferred to the steam supply pipe 100 by the water pump. Of course, it is not excluded that the position of the hydrophobic collection container 610 is high and that the condensed water may enter the steam supply line 100 under the action of gravity, in which case a water pump may not be needed.
A fourth valve 630 is provided on the drain pipe 620, and the fourth valve 630 may have a different opening degree. Specifically, when the opening degree of the fourth valve 630 is different, the flow rate of the condensed water in the drain pipe 620 entering the steam supply pipeline 100 through the fourth valve 630 is different, so as to realize temperature adjustment of the high-temperature steam.
The control device is connected to the first temperature sensor 500 and the fourth valve 630, respectively, and the control device may control the opening degree of the fourth valve 630.
In a specific working process, when the first temperature sensor 500 detects that the first temperature of the high-temperature steam in the first box 200 is greater than or equal to a first preset temperature value, the control device controls the opening of the fourth valve 630 to increase according to the detected first temperature value, so as to control the flow of the condensed water in the drain pipe 620 flowing through the fourth valve 630 to increase, the condensed water in the drain collecting container 610 enters the steam supply pipeline 100 through the drain pipe 620, and the high-temperature steam in the steam supply pipeline 100 is cooled to a greater extent.
The condensed water of the second box 400 is collected by the hydrophobic collection container 610, so that the condensed water enters the steam supply pipeline 100 through the hydrophobic pipe 620 to cool the high-temperature steam, and the condensed water can be recycled. Through setting up fourth valve 630 at drain pipe 620 for controlgear can be according to the first temperature control of the high temperature steam in first box 200 the aperture of fourth valve 630, thereby makes according to the first temperature of difference, and the flow that gets into the comdenstion water of supplying vapour pipeline 100 is corresponding difference also, thereby has realized the feedback regulation to the high temperature steam in supplying vapour pipeline 100.
As an embodiment of the present application, the fan heater of the thermal power generation system may further include a hydrophobic collection container 610, a first pipe, a second temperature sensor, and a control device.
The drain collecting container 610 may collect condensed water flowing out of the drain opening, and the drain collecting container 610 may be disposed below the drain opening. The condensed water collected by the hydrophobic collection container 610 may also cool the high-temperature steam in the steam supply pipeline 100.
The second valve 210 may be provided with an inlet, a first outlet, which may be connected to the atmosphere, and a second outlet, which may be connected to the first line, and the inlet may be connected to the pressure relief port. Specifically, the second valve 210 may control the first outlet and the second outlet to be opened or closed at the same time, or one of the first outlet and the second outlet may be opened and the other may be closed.
A second temperature sensor may be provided at the first casing 200, the second temperature sensor being for detecting a second temperature of the steam discharged from the pressure relief port.
A first pipe is connected between the second outlet and the hydrophobic collection container 610, and the first pipe is a passage through which the high-temperature steam of the first tank 200 enters the hydrophobic collection container 610.
The control device is connected to the second temperature sensor and the second valve 210, and when the second temperature sensor detects a second temperature of the steam discharged from the pressure relief port, the control device performs corresponding control.
In a specific implementation process, when the second temperature sensor detects that the second temperature is greater than or equal to the second preset temperature value, the control device may control the second outlet to be opened, the first outlet to be closed, and the high-temperature steam in the first box 200 is discharged to the drain collecting container 610 through the first pipeline. When the second temperature sensor detects that the second temperature is lower than the second preset temperature value, the control device may control the first outlet and the second outlet to be opened together, or may control the first outlet to be opened and the second outlet to be closed simultaneously. When the first outlet and the second outlet are opened together, a portion of the high-temperature steam inside the first casing 200 may be discharged to the atmosphere through the first outlet, and a portion may be discharged to the drain collecting container 610 through the second outlet. When the first outlet is opened and the second outlet is closed, the high-temperature steam inside the first casing 200 is discharged to the atmosphere through the first outlet.
Through setting up second temperature sensor for controlgear can control second valve 210 according to the second temperature value that predetermines, thereby makes when the second temperature of the steam that the pressure release mouth discharged is greater than or equal to the second temperature value that predetermines, discharges high temperature steam to hydrophobic collecting container 610, can avoid high temperature steam directly to discharge the atmosphere and cause the scald accident. When the second temperature is lower than the second preset temperature value, a part of the high-temperature steam may be discharged to the atmosphere, a part of the high-temperature steam may be discharged to the hydrophobic collection container 610, or all of the high-temperature steam may be discharged to the atmosphere, so that the speed of the high-temperature steam discharged from the first tank 200 may be increased. Meanwhile, when the first valve 130 is closed and the third valve 410 is opened, the first tank 200 is communicated with the atmosphere, so that a pressure difference between the first tank 200 and the second tank 400 is avoided, and the problem that the condensed water in the second tank 400 cannot be discharged to the drain collecting container 610 is effectively prevented.
In the embodiment of the application, in order to improve the speed of the second box 400 when the condensed water is drained, the direction of the pressure relief port and the direction of the drain port are opposite, so that the condensed water in the second box 400 can be drained quickly, and the condensed water can be effectively prevented from being frozen in a low-temperature environment. Meanwhile, the direction of the pressure relief opening is opposite to that of the drain opening, so that airflow can flow in the fan heater more easily, and pressure relief is facilitated.
As an alternative embodiment of the present application, the fan heater of the thermal power generation system may further include a heating wire, a third temperature sensor, and a control device. Heating wires are devices that can generate heat. The heating wire is respectively disposed at the pressure relief opening and the drain opening, and the heating wire may be wound around the pressure relief opening and the drain opening, or may be wound around the second valve 210 and the third valve 410. The third temperature sensor is used for detecting the ambient temperature. The control device is respectively connected with the electric heating wire and the third temperature sensor. When the third temperature sensor detects that the ambient temperature is less than or equal to a third preset temperature value, the control equipment controls the heating wire to heat.
Through set up the heating wire on pressure release mouth and drain trap for when ambient temperature is less than the third preset temperature value, can heat pressure release mouth and drain trap, thereby avoid when ambient temperature is lower, freeze in pressure release mouth or drain trap department, cause the problem of pressure release mouth and drain trap frost crack.
As an alternative, the first tank 200 may further include a plurality of draft tubes 700, and the plurality of draft tubes 700 may be used to uniformly deliver the high-temperature steam of the first tank 200 to the heat exchange tube set 300. The plurality of flow guide pipes 700 are arranged on one side of the first box 200 opposite to the heat exchange pipe set 300, and the plurality of flow guide pipes 700 are communicated with the heat exchange pipe set 300 and are arranged at equal intervals.
Through the equidistant arrangement of the plurality of guide pipes 700 and the communication with the heat exchange tube group 300, the high-temperature steam of the first box 200 uniformly enters the heat exchange tube group 300 through the plurality of guide pipes 700, so that the high-temperature steam in the heat exchange tube group 300 is relatively uniformly distributed, and the uniformity of the heat exchange tube group 300 in the process of heating the inlet air conveyed by the air inlet machine is effectively improved.
Further, a plurality of drain openings may be provided in the second casing 400 at equal intervals, and the third valves 410 are installed in the plurality of drain openings. Through setting up a plurality of drain holes for the comdenstion water in the second box 400 can quick discharge, has avoided the problem that the drain is frozen that arouses slowly under low temperature environment drainage effectively.
As an embodiment of the present application, the fan heater of the thermal power generation system may further include a pressure detection device and a control apparatus. A pressure detection means may be provided within the heat exchange tube set 300 for detecting the pressure within the heat exchange tube set 300. The pressure detection means may employ a gas pressure sensor. The control device is respectively connected with the first valve 130 and the pressure detection device, and the control device controls the opening degree of the first valve 130 according to the pressure in the heat exchange tube set 300 detected by the pressure detection device, so that the pressure in the heat exchange tube set 300 is smaller than a preset pressure threshold value.
The control device controls the opening of the first valve 130 according to the pressure in the heat exchange tube set 300 detected by the pressure detection device, so that the steam flow delivered to the first box 200 by the steam supply pipeline 100 changes along with the opening of the first valve 130, thereby effectively avoiding the problem that the heat exchange tube set 300 is damaged due to overlarge pressure of the heat exchange tube set 300 as the high-temperature steam delivered to the first box 200 by the steam supply pipeline 100 is too much and the more the high-temperature steam enters the heat exchange tube set 300.
As an alternative embodiment, the steam supply pipeline 100 includes a steam supply main pipe 110 and a plurality of steam supply branch pipes 120, first ends of the plurality of steam supply branch pipes 120 are all connected with the steam supply main pipe 110, second ends of the plurality of steam supply branch pipes 120 are all connected with the first box 200, and the plurality of steam supply branch pipes 120 are arranged at equal intervals. The plurality of steam supply branch pipes 120 are each provided with a first valve 130.
Through setting up the steam supply pipeline 100 to the structure that supplies vapour main pipe 110 and a plurality of branch pipes 120 that supply vapour for high temperature steam gets into a plurality of branch pipes 120 that supply vapour through supplying vapour main pipe 110, thereby makes the high temperature steam distribution that gets into first box 200 also relatively even, finally makes the high temperature steam that gets into heat exchange tube group 300 also relatively even, has improved the heat exchange tube group 300 effectively and has supplied the hot uniformity of air exchange with the air inlet that the air inlet machine carried.
In the above embodiments of the present invention, the difference between the embodiments is mainly described, and different optimization features between the embodiments can be combined to form a better embodiment as long as they are not contradictory, and further description is omitted here in view of brevity of the text.
The above description is only an example of the present invention, and is not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (10)
1. The utility model provides a fan air heater of thermal power system which characterized in that, includes steam supply pipeline (100), first box (200), heat exchange tube group (300) and second box (400), wherein:
the steam supply pipeline (100) is communicated with the first box body (200), the heat exchange pipe set (300) is arranged between the first box body (200) and the second box body (400), a first end of the heat exchange pipe set (300) is communicated with the first box body (200), and a second end of the heat exchange pipe set (300) is communicated with the second box body (400);
the steam supply pipeline (100) is provided with a first valve (130), the first box body (200) is provided with a pressure relief opening, the pressure relief opening is provided with a second valve (210), the second box body (400) is provided with a drain opening, and the drain opening is provided with a third valve (410);
with the first valve (130) closed and the third valve (410) open, the second valve (210) is opened to vent both the drain port and the pressure relief port to atmosphere.
2. The fan heater according to claim 1, further comprising a first temperature sensor (500), a temperature reduction device and a control device, wherein the temperature reduction device is connected to the steam supply pipeline (100), the first temperature sensor (500) is disposed in the first box (200), and the first temperature sensor (500) is configured to detect a first temperature of steam in the first box (200);
the control equipment respectively with first temperature sensor (500) with the cooling equipment is connected, the control equipment is in when first temperature is greater than or equal to first preset temperature value, control the cooling equipment is right supply the steam cooling in vapour pipeline (100), until first temperature is less than first preset temperature value.
3. The fan heater according to claim 2, wherein the temperature reduction device comprises a hydrophobic collection container (610), a hydrophobic pipe (620) and a fourth valve (630), the hydrophobic collection container (610) is used for collecting condensed water flowing out of the hydrophobic port, the hydrophobic pipe (620) is connected between the hydrophobic collection container (610) and the steam supply pipeline (100), and the fourth valve (630) is arranged on the hydrophobic pipe (620);
the fourth valve (630) is connected to the control device, and the control device controls the opening of the fourth valve (630) according to the first temperature.
4. The fan heater according to claim 1, further comprising a drain collecting container (610), a first pipeline, a second temperature sensor and a control device, wherein the drain collecting container (610) is used for collecting condensed water flowing out of the drain opening, the second valve (210) is provided with an inlet, a first outlet and a second outlet, the first outlet is used for communicating with the atmosphere, the first pipeline is connected between the second outlet and the drain collecting container (610), the inlet is communicated with the pressure relief opening, the second temperature sensor is arranged in the first box body (200), the second temperature sensor is used for detecting a second temperature of steam discharged from the pressure relief opening, and the control device is respectively connected with the second temperature sensor and the second valve (210);
when the second temperature is greater than or equal to a second preset temperature value, the control equipment controls the second outlet to be opened, and the first outlet is closed;
and the control equipment controls the first outlet to be opened when the second temperature is lower than a second preset temperature value.
5. The fan heater of claim 1, wherein said pressure relief vent is oriented opposite to said drain vent.
6. The fan heater according to claim 1, further comprising an electric heating wire, a third temperature sensor and a control device, wherein the electric heating wire is respectively disposed at the pressure relief opening and the drain opening, and the third temperature sensor is configured to detect an ambient temperature;
the heating wire with third temperature sensor all with controlgear is connected, controlgear is in when ambient temperature is less than or equal to the third preset temperature, controlgear control the heating of heating wire.
7. The fan heater according to claim 1, wherein the first box (200) further comprises a plurality of flow guide pipes (700), the flow guide pipes (700) are disposed on a side of the first box (200) opposite to the heat exchange tube set (300), and the flow guide pipes (700) are communicated with the heat exchange tube set (300) and are arranged at equal intervals.
8. The fan heater according to claim 1, wherein the plurality of drain openings are provided in the second casing (400) at equal intervals, and the third valve (410) is installed in each of the plurality of drain openings.
9. The fan heater according to claim 1, further comprising a pressure detection device disposed in the heat exchange tube set (300) and a control device for detecting a pressure in the heat exchange tube set (300);
the control equipment is respectively connected with the first valve (130) and the pressure detection device, and the control equipment controls the opening degree of the first valve (130) according to the pressure so that the pressure is smaller than a preset pressure threshold value.
10. The fan heater according to claim 1, wherein the steam supply pipeline (100) comprises a main steam supply pipe (110) and a plurality of branch steam supply pipes (120), first ends of the branch steam supply pipes (120) are connected to the main steam supply pipe (110), second ends of the branch steam supply pipes (120) are connected to the first box (200), the branch steam supply pipes are arranged at equal intervals, and the branch steam supply pipes (120) are provided with the first valves (130).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121340392.8U CN215523745U (en) | 2021-06-16 | 2021-06-16 | Fan air heater of thermal power generation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121340392.8U CN215523745U (en) | 2021-06-16 | 2021-06-16 | Fan air heater of thermal power generation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215523745U true CN215523745U (en) | 2022-01-14 |
Family
ID=79808465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121340392.8U Active CN215523745U (en) | 2021-06-16 | 2021-06-16 | Fan air heater of thermal power generation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215523745U (en) |
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2021
- 2021-06-16 CN CN202121340392.8U patent/CN215523745U/en active Active
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