CN214198843U - Automatic temperature control device for main plant of gas-steam combined cycle unit - Google Patents
Automatic temperature control device for main plant of gas-steam combined cycle unit Download PDFInfo
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- CN214198843U CN214198843U CN202022934722.8U CN202022934722U CN214198843U CN 214198843 U CN214198843 U CN 214198843U CN 202022934722 U CN202022934722 U CN 202022934722U CN 214198843 U CN214198843 U CN 214198843U
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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
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/16—Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]
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Abstract
The embodiment of the utility model provides an automatic temperature control device for a main plant of a gas-steam combined cycle unit, wherein a heating water supply pipeline is communicated with the water outlet end of a heating water supply header; the water supply regulating valve is arranged on the heating water supply pipeline; the heating water return pipeline is communicated with the water inlet end of the heating water return header; the backwater regulating valve group is arranged on the heating backwater pipeline and comprises a first regulating valve, a backwater regulating valve and a second regulating valve which are arranged along the flowing direction of water; the bypass adjusting valve is connected with the water return adjusting valve group in parallel through a bypass pipeline; the temperature measuring points are arranged in the main plant, and the environmental temperature values of all heating areas in the main plant are monitored; the signal output end of the temperature measuring point is electrically connected with the control device, and the control end of the backwater adjusting door is electrically connected with the control device. The utility model discloses according to the regional ambient temperature of each heating change automatically regulated heating discharge, with main building ambient temperature control in certain extent, realize water conservation, energy-conserving purpose.
Description
Technical Field
The utility model relates to a temperature automatic control equipment technical field particularly, relates to a gas-steam combined cycle unit main building temperature automatic control device.
Background
Many devices in a main plant of the gas-steam combined cycle unit need to be protected against cold and freezing, such as condensed water, closed cold water, some water level and pressure measuring points and the like, if the indoor temperature is too low, abnormal conditions such as pipeline frost crack, measuring point fault change and the like can be caused, and even if the conditions are serious, the devices can be tripped. In winter, the heating equipment of the gas turbine main plant is mainly a heating radiator or a fan heater, the heat sources of the heating water of the heating radiator and the fan heater are all taken from the external heat supply pipeline of the power plant, and the flow of the heating water in the power plant is directly shunted to reduce the external heat supply. In the prior art, the heating water of the main plant of the gas-steam combined cycle unit generally adopts a return water adjusting door of the main plant to perform manual adjustment, and the return water supplying door of the heating water is generally in a fully open or large state because the temperature of each heating area in the main plant cannot be directly obtained, so that the temperature in the plant can be relatively high in the initial stage, the final stage and the time period with high ambient temperature in the heating season, and the heat loss is large.
In view of the above, it is desirable to provide an automatic temperature control device for a main plant of a gas-steam combined cycle unit, which overcomes the above-mentioned drawbacks of the prior art.
SUMMERY OF THE UTILITY MODEL
The specification provides a temperature automatic control device for a main plant of a gas-steam combined cycle unit, which is used for overcoming at least one technical problem in the prior art.
According to the embodiment of the specification, the automatic temperature control device for the main plant of the gas-steam combined cycle unit comprises a heating water supply header, a heating water return header, a heating water supply pipeline, a heating water return pipeline, a water supply adjusting door, a water return adjusting valve set, a bypass pipeline, a bypass adjusting door, a temperature measuring point and a control device; wherein:
the heating water supply pipeline is communicated with the water outlet end of the heating water supply header and is used for conveying heating water in the heating water supply header; the water supply adjusting valve is arranged on the heating water supply pipeline and controls the circulation of heating water in the heating water supply pipeline; the heating water return pipeline is communicated with the water inlet end of the heating water return header, and the heating water return in the main plant is conveyed into the heating water return header; the backwater regulating valve group is arranged on the heating backwater pipeline and used for controlling the circulation of heating backwater in the heating backwater pipeline, and comprises a first regulating valve, a backwater regulating valve and a second regulating valve which are arranged along the flowing direction of water; the bypass adjusting valve is connected with the return water adjusting valve group in parallel through the bypass pipeline; the temperature measuring point is arranged in the main plant and used for monitoring the environmental temperature value of each heating area in the main plant; the signal output end of the temperature measuring point is electrically connected with the control device, and the control end of the backwater adjusting door is electrically connected with the control device.
Optionally, the water return regulating valve is an electric temperature regulating valve.
Optionally, the automatic temperature control device further comprises a heat supply network water supply main pipe, a heat supply network water return main pipe, a third adjusting door and a fourth adjusting door; wherein:
the heat supply network water supply main pipe is communicated with the water inlet end of the heating water supply header; the third adjusting door is arranged on the heat supply network water supply main pipe; the heat supply network water return main pipe is communicated with the water outlet end of the heating return header; and the fourth adjusting door is arranged on the heat supply network water return main pipe.
Further optionally, the water supply adjusting door, the third adjusting door and the fourth adjusting door are all electric adjusting doors.
Optionally, the heating water supply pipeline comprises a first heating water supply pipeline, a second heating water supply pipeline, a third heating water supply pipeline and a fourth heating water supply pipeline, and the heating water return pipeline comprises a first heating water return pipeline, a second heating water return pipeline, a third heating water return pipeline and a fourth heating water return pipeline; wherein:
the first heating water supply pipeline is communicated with the water outlet end of the heating water supply header and is used for conveying heating water of the natural gas pressurizing station; the first heating water return pipeline is communicated with the water inlet end of the heating water return header and is used for conveying heating water return of the natural gas pressurizing station;
the second heating water supply pipeline is communicated with the water outlet end of the heating water supply header and is used for conveying heating water of the first boiler room; the second heating water return pipeline is communicated with the water inlet end of the heating water return header and is used for conveying heating water return of the first boiler room;
the third heating water supply pipeline is communicated with the water outlet end of the heating water supply header and is used for conveying heating water of a second boiler room; the third heating water return pipeline is communicated with the water inlet end of the heating water return header and is used for conveying heating water return of the second boiler room;
the fourth heating water supply pipeline is communicated with the water outlet end of the heating water supply header and is used for conveying heating water of a gas turbine main plant; and the fourth heating water return pipeline is communicated with the water inlet end of the heating water return header and is used for conveying the heating water return of the gas turbine main plant.
Further optionally, the first heating water supply pipeline, the second heating water supply pipeline, the third heating water supply pipeline and the fourth heating water supply pipeline are respectively provided with one water supply regulating valve.
Further optionally, the first heating water return pipeline, the second heating water return pipeline, the third heating water return pipeline and the fourth heating water return pipeline are respectively provided with one return water regulating valve set.
Optionally, the first adjusting door, the second adjusting door, and the bypass adjusting door are all manual adjusting doors.
Optionally, the automatic temperature control device further comprises an alarm device, and a signal input end of the alarm device is electrically connected with the control device.
The beneficial effects of the embodiment of the specification are as follows:
the method is characterized in that temperature measuring points are additionally arranged in each heating area of a main plant of the gas-steam combined cycle unit, the ambient temperature value in each heating area is monitored in real time, the heating water flow of each heating area is respectively adjusted according to the temperature value of each heating area in the plant, and the ambient temperature in the plant is controlled to be about 15-20 ℃, so that the purposes of energy saving and consumption reduction are achieved, and the problem of large heat loss caused by the fact that a heating water supply return valve is always fully opened or in a large state in the prior art is solved. The automatic temperature control device is additionally provided with an alarm device, when the ambient temperature is too low, the alarm device gives an alarm prompt to remind a person on duty to check whether the heating water system is normal or not, whether air leakage occurs in doors and windows of each area or not, and to take sealing measures in time.
The innovation points of the embodiment of the specification comprise:
1. in this embodiment, temperature measurement points are additionally arranged in each heating area of a main plant of the gas-steam combined cycle unit, an ambient temperature value in each heating area is monitored in real time, heating water flow in each heating area is respectively adjusted according to the temperature value of each heating area in the plant, and the ambient temperature in the plant is controlled to be about 15 ℃ to 20 ℃, so that the purposes of energy saving and consumption reduction are achieved, and the problem that in the prior art, the heating water supply return door is always in a fully open or large state, so that heat loss is large is solved, and the method is one of the innovation points of the embodiment of the description.
2. In this embodiment, the automatic temperature control device is further provided with an alarm device, when the ambient temperature is too low, the alarm device gives an alarm prompt to remind an operator on duty to check whether the heating water system is normal or not, whether air leakage occurs in doors and windows of each area or not, and to take a sealing measure in time, which is one of innovation points of the embodiments of the present specification.
3. In this embodiment, a bypass adjusting door is further disposed at the position of the return water adjusting valve group, and during the fault maintenance of the return water adjusting door, the bypass adjusting door is opened, so that the heating is not interrupted.
4. In the embodiment, the backwater adjusting valve is an electric temperature adjusting valve, and the valve automatically adjusts the opening of the valve according to the change of the environmental temperature of the heating area, so as to change the flow of the heating water in the corresponding area, thereby achieving the purposes of water saving and energy saving.
5. In the embodiment, the manual adjusting doors are respectively arranged at the front and the rear of the water return adjusting door, and when the water return adjusting door breaks down and is overhauled, the two manual adjusting doors at the front and the rear of the water return adjusting door are used for taking an isolation measure for the water return adjusting door, which is one of the innovative points of the embodiment of the description.
Drawings
In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a heating water return header part of an automatic temperature control device for a main plant of a gas-steam combined cycle unit provided in an embodiment of the present disclosure;
FIG. 2 is a schematic structural diagram of a heating and water supply header part of an automatic temperature control device for a main plant of a gas-steam combined cycle unit provided in an embodiment of the present disclosure;
in the figure, 1 is a heating water supply header, 2 is a heating water return header, 3 is a water supply regulating valve, 4 is a bypass pipeline, 5 is a bypass regulating valve, 6 is a first regulating valve, 7 is a water return regulating valve, 8 is a second regulating valve, 9 is a heat supply network water supply main pipe, 10 is a heat supply network water return main pipe, 11 is a third regulating valve, 12 is a fourth regulating valve, 13 is a first heating water supply pipeline, 14 is a second heating water supply pipeline, 15 is a third heating water supply pipeline, 16 is a fourth heating water supply pipeline, 17 is a first heating water return pipeline, 18 is a second heating water return pipeline, 19 is a third heating water return pipeline, and 20 is a fourth heating water return pipeline.
Detailed Description
The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are only some embodiments of the present disclosure, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without any creative effort belong to the protection scope of the present invention.
It should be noted that the terms "including" and "having" and any variations thereof in the embodiments of the present specification and the drawings are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
The embodiment of the specification discloses a temperature automatic control device for a main plant of a gas-steam combined cycle unit. The following are detailed below.
Fig. 1 and fig. 2 are a schematic diagram of a structure of a heating water return header portion and a schematic diagram of a structure of a heating water supply header portion of an automatic temperature control device for a main plant of a gas-steam combined cycle unit provided in an embodiment of the present specification, respectively. Referring to fig. 1 and 2, the automatic temperature control device includes a heating water supply header 1, a heating water return header 2, a heating water supply pipeline, a heating water return pipeline, a water supply adjusting door 3, a water return adjusting valve set, a bypass pipeline 4, a bypass adjusting door 5, a temperature measuring point (not shown in the figure), and a control device (not shown in the figure); wherein:
the heating water supply pipeline is communicated with the water outlet end of the heating water supply header 1 and is used for conveying heating water in the heating water supply header 1; the water supply adjusting door 3 is arranged on the heating water supply pipeline and controls the circulation of heating water in the heating water supply pipeline; the heating water return pipeline is communicated with the water inlet end of the heating water return header 2, and the heating water return in the main plant is conveyed to the heating water return header 2; the backwater regulating valve group is arranged on the heating backwater pipeline and is used for controlling the circulation of heating backwater in the heating backwater pipeline, and the backwater regulating valve group comprises a first regulating valve 6, a backwater regulating valve 7 and a second regulating valve 8 which are arranged along the flowing direction of water; the bypass adjusting valve 5 is connected with the return water adjusting valve group in parallel through the bypass pipeline 4; the temperature measuring point is arranged in the main plant and used for monitoring the environmental temperature value of each heating area in the main plant; and the signal output end of the temperature measuring point is electrically connected with the control device, and the control end of the return water adjusting door 7 is electrically connected with the control device.
The embodiment of the utility model provides an in the embodiment of the temperature automatic control device be equipped with mated heating water supply header 1, heating return water header 2, the collection of heating water is adorned in heating water supply header 1, redistribution to in each conveyer pipe of next-level, reduce the thermal deviation, it is smooth and easy to guarantee the circulation of working medium, and carry out the return water through heating return water pipe, needn't set up heating device alone in the factory building, need not to drain, the influence to the environment has been avoided, it is concrete, carry the heating water to each heating region through the heating water supply pipe that is linked together with heating water supply header 1 delivery port and heat, afterwards, the rethread heating return water pipe is carried each regional heating return water to and is joined in heating return water header 2. In order to realize the control of the heating water flow, a water supply regulating door 3 is arranged on the heating water supply pipeline, the flow of the heating water in the heating water supply pipeline is controlled by the water supply regulating door 3, preferably, the water supply regulating door 3 is an electric regulating door, thereby realizing the automatic regulation of the device, correspondingly, a backwater regulating valve group is arranged on the heating backwater pipeline, the flow of the heating backwater in the heating backwater pipeline is controlled by the backwater regulating valve group, the backwater regulating valve group comprises a first regulating door 6, a backwater regulating door 7 and a second regulating door 8 which are arranged along the water flow direction, the flow of the heating backwater in the heating backwater pipeline is changed by the backwater regulating door 7, thereby the heating water flow in the main plant is regulated by the water supply regulating door 3 and the backwater regulating door 7, the environmental temperature in the main plant is ensured to be controlled within a certain range, the first regulating door 6 and the second regulating door 8 are arranged at the front and back of the backwater regulating door 7, when the backwater adjusting door 7 breaks down and is overhauled, the first adjusting door 6 and the second adjusting door 8 are closed, so that the backwater adjusting door 7 is isolated from water, and an overhauling environment is provided for the backwater adjusting door 7. In the maintenance process of return water adjusting door 7, for guaranteeing that the heating in the main building is not interrupted, be equipped with other pipeline 4 on the heating return water pipeline, install bypass adjusting door 5 on the other pipeline 4, preferably manual adjusting door, bypass adjusting door 5 is as the bypass door of return water adjusting valve group, during the trouble shooting of return water adjusting door 7, open bypass adjusting door 5 and then open other pipeline 4, make the heating return water carry to heating return water header 2 in through other pipeline 4, guarantee that the heating is not interrupted.
The temperature automatic control device in this embodiment adds the temperature measurement point in each heating area to monitor the ambient temperature value of each heating area in the main building, and it should be noted that the ambient temperature value measured by the installed temperature measurement point should reflect the temperature condition of the lowest ambient temperature of each heating area to ensure effective heating. The control device receives signals of the temperature measuring points, the connection mode of the signal output ends of the temperature measuring points and the control device can be known to technicians in the field without creative labor, meanwhile, the electric connection mode of the control end of the backwater adjusting door 7 and the control device is the prior art, the temperature measuring points transmit the measured environmental temperature values to the control device, the control device controls the backwater adjusting door 7 according to the received environmental temperature values, and the heating water flow is automatically adjusted to meet the condition that the environment of each heating area is not lower than a set temperature value. In detail, the control device compares the received environment temperature value with a first preset temperature threshold value, and when the environment temperature value is lower than the first preset temperature threshold value, the control device controls the water return regulating valve 7 to increase the valve opening degree so as to increase the heating water flow and achieve the purpose of increasing the environment temperature of the heating area; when the environmental temperature value is not lower than the first preset temperature threshold value, the control device compares the environmental temperature value with a second preset temperature threshold value, if the environmental temperature value is not higher than the second preset temperature threshold value, the control device does not send a control instruction to the return water adjusting door 7, and the return water adjusting door 7 does not act; if the environmental temperature value is higher than the second preset temperature threshold value, the control device controls the return water adjusting valve 7 to reduce the opening degree of the valve so as to reduce the flow rate of heating water, avoid heat loss and achieve the purposes of water saving and energy saving.
It should be noted and understood that the first preset temperature threshold is smaller than the second preset temperature threshold, and the values of the first preset temperature threshold and the second preset temperature threshold are set according to different heating requirements of each heating area, so as to control the temperature of the heating area within the range.
In addition, in order to prevent the situation that the backwater regulating door 7 is in the maximum opening degree for a long time but the ambient temperature of the heating area is still low, the automatic temperature control device is added with a low ambient temperature alarm function and specifically comprises an alarm device, wherein a signal input end of the alarm device is electrically connected with the control device, and it needs to be noted that the electrical connection mode of the signal input end of the alarm device and the control device is the prior art. When the environmental temperature of a certain heating area is lower than the preset heating minimum temperature value, the alarm device gives an alarm to remind a person on duty to check whether the heating water system is normal or not on site and whether air leakage occurs on doors and windows of each area or not, and then sealing measures are taken.
The first adjusting door 6 and the second adjusting door 8 in the backwater adjusting valve group are preferably manual adjusting doors, the structure is simple and compact, the operation is flexible and light, the backwater adjusting door 7 in the backwater adjusting valve group is preferably an electric temperature adjusting valve, the backwater adjusting door 7 automatically adjusts the opening of the valve according to the change of the environmental temperature, the flow of heating water is changed, and the purposes of water saving and energy saving are achieved.
In a specific embodiment, the heating water supply pipeline includes a first heating water supply pipeline 13, a second heating water supply pipeline 14, a third heating water supply pipeline 15, a fourth heating water supply pipeline 16, and the heating water return pipeline includes a first heating water return pipeline 17, a second heating water return pipeline 18, a third heating water return pipeline 19, a fourth heating water return pipeline 20; the first heating water supply pipeline 13 is communicated with the water outlet end of the heating water supply header 1 and is used for conveying heating water of the natural gas pressurizing station; the first heating water return pipeline 17 is communicated with the water inlet end of the heating water return header 2 and is used for conveying heating water return of the natural gas pressurizing station; the second heating water supply pipeline 14 is communicated with the water outlet end of the heating water supply header 1 and is used for conveying heating water of a first boiler room; the second heating water return pipeline 18 is communicated with the water inlet end of the heating water return header 2 and is used for conveying heating water return of the first boiler room; the third heating water supply pipeline 15 is communicated with the water outlet end of the heating water supply header 1 and is used for conveying heating water of a second boiler room; the third heating water return pipeline 19 is communicated with the water inlet end of the heating water return header 2 and is used for conveying heating water return of the second boiler room; the fourth heating water supply pipeline 16 is communicated with the water outlet end of the heating water supply header 1 and is used for conveying heating water of a gas turbine main plant; and the fourth heating water return pipeline 20 is communicated with the water inlet end of the heating water return header 2 and is used for conveying the heating water return of the gas turbine main plant.
The first heating water supply pipeline 13 is used for conveying heating water to the natural gas pressurizing station, and then the first heating water return pipeline 17 is used for conveying heating return water in the natural gas pressurizing station to the heating return water header 2 to heat the natural gas pressurizing station in the factory; a second heating water supply pipeline 14 is used for conveying heating water to the first boiler room, and a second heating water return pipeline 18 is used for conveying heating water in the first boiler room to a heating water return header 2 to heat the first boiler room in the plant; a third heating water supply pipeline 15 is used for conveying heating water to a second boiler room, and a third heating water return pipeline 19 is used for conveying heating water in the second boiler room to a heating water return header 2 to heat the second boiler room in the plant; similarly, the fourth heating water supply pipeline 16 is used for conveying heating water to the gas turbine main plant, and the fourth heating water return pipeline 20 is used for conveying heating water in the gas turbine main plant to the heating water return header 2, so that heating of the gas turbine main plant of the plant is completed.
Wherein the first heating water supply pipeline 13, the second heating water supply pipeline 14, the third heating water supply pipeline 15 and the fourth heating water supply pipeline 16 are respectively provided with one water supply regulating valve 3; the first heating water return pipeline 17, the second heating water return pipeline 18, the third heating water return pipeline 19 and the fourth heating water return pipeline 20 are respectively provided with one return water regulating valve group. Every heating water supply pipe, set up independent control flap on the heating return water pipeline respectively, carry out independent supply to the heating water in each heating region, on the one hand, carry out independent control to the ambient temperature in every heating region, can satisfy the regional different heating temperature demands of each heating, on the other hand, when the heating in certain heating region goes wrong, can close corresponding water supply regulating gate 3 and return water regulating gate 7 according to the pipeline that the trouble appears, and overhaul it, do not influence the heating in other heating regions.
In another specific embodiment, the automatic temperature control device further comprises a main pipe 9 for supplying water to the heat supply network, a main pipe 10 for returning water to the heat supply network, a third adjusting door 11 and a fourth adjusting door 12; the heat supply network water supply main pipe 9 and the heat supply network water return main pipe 10 are used for carrying out heat supply network water conveying, wherein the heat supply network water supply main pipe 9 is communicated with the water inlet end of the heating water supply header 1; the third adjusting door 11 is arranged on the heat supply network water supply main pipe 9; the heat supply network water return main pipe 10 is communicated with the water outlet end of the heating return header 2; the fourth adjusting door 12 is installed on the heat supply network water return main pipe 10. Preferably, the third adjusting door 11 and the fourth adjusting door 12 are electric adjusting doors, so that automatic adjustment is realized, and the automation is strong.
In the concrete implementation process, with 720t/h of average heating water flow of heating period, supply the return water difference in temperature 18 ℃, heating water heat consumption 54GJ/h, put into operation the utility model discloses a behind the gas-steam combined cycle unit main building temperature automatic control device, according to ambient temperature change round the clock and the heating season month carry out main building indoor temperature automatically regulated, heating water flow will reduce to 500t/h, heating water heat consumption reduces to 38GJ/h, calculates with 120 days in the heating season, the reducible heat consumption (54-38) x 24 x 120 ═ 46080GJ in every heating season, converts into economic benefits 368 ten thousand yuan, has improved the economic benefits of power plant greatly.
To sum up, the present specification discloses an automatic temperature control device for a main plant of a gas-steam combined cycle unit, which adds temperature measuring points in each heating area of the main plant of the gas-steam combined cycle unit, monitors the ambient temperature value in each heating area in real time, adjusts the heating water flow rate of each heating area according to the temperature value of each heating area in the plant, and controls the ambient temperature in the plant to be about 15 ℃ to 20 ℃ so as to achieve the purpose of energy saving and consumption reduction, and solve the problem of large heat loss caused by the fact that a heating water supply and return water door is always in a fully open or large state in the prior art. The automatic temperature control device is additionally provided with an alarm device, when the ambient temperature is too low, the alarm device gives an alarm prompt to remind a person on duty to check whether the heating water system is normal or not, whether air leakage occurs in doors and windows of each area or not, and to take sealing measures in time.
Those of ordinary skill in the art will understand that: the figures are schematic representations of one embodiment, and the blocks or processes in the figures are not necessarily required to practice the present invention.
Those of ordinary skill in the art will understand that: modules in the devices in the embodiments may be distributed in the devices in the embodiments according to the description of the embodiments, or may be located in one or more devices different from the embodiments with corresponding changes. The modules of the above embodiments may be combined into one module, or further split into multiple sub-modules.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the embodiments of the present invention.
Claims (9)
1. The automatic temperature control device for the main plant of the gas-steam combined cycle unit is characterized by comprising a heating water supply header, a heating water return header, a heating water supply pipeline, a heating water return pipeline, a water supply adjusting door, a water return adjusting valve group, a bypass pipeline, a bypass adjusting door, a temperature measuring point and a control device; wherein:
the heating water supply pipeline is communicated with the water outlet end of the heating water supply header and is used for conveying heating water in the heating water supply header; the water supply adjusting valve is arranged on the heating water supply pipeline and controls the circulation of heating water in the heating water supply pipeline; the heating water return pipeline is communicated with the water inlet end of the heating water return header, and the heating water return in the main plant is conveyed into the heating water return header; the backwater regulating valve group is arranged on the heating backwater pipeline and used for controlling the circulation of heating backwater in the heating backwater pipeline, and comprises a first regulating valve, a backwater regulating valve and a second regulating valve which are arranged along the flowing direction of water; the bypass adjusting valve is connected with the return water adjusting valve group in parallel through the bypass pipeline; the temperature measuring point is arranged in the main plant and used for monitoring the environmental temperature value of each heating area in the main plant; the signal output end of the temperature measuring point is electrically connected with the control device, and the control end of the backwater adjusting door is electrically connected with the control device.
2. The automatic temperature control device for the main plant of the gas-steam combined cycle unit according to claim 1, wherein the water return regulating valve is an electric temperature regulating valve.
3. The automatic temperature control device for the main plant of the gas-steam combined cycle unit according to claim 1, further comprising a heat supply network water supply main pipe, a heat supply network water return main pipe, a third adjusting door and a fourth adjusting door; wherein:
the heat supply network water supply main pipe is communicated with the water inlet end of the heating water supply header; the third adjusting door is arranged on the heat supply network water supply main pipe; the heat supply network water return main pipe is communicated with the water outlet end of the heating return header; and the fourth adjusting door is arranged on the heat supply network water return main pipe.
4. The automatic temperature control device for the main plant of the gas-steam combined cycle unit according to claim 3, wherein the water supply adjusting door, the third adjusting door and the fourth adjusting door are all electric adjusting doors.
5. The automatic temperature control device for the main plant of the gas-steam combined cycle unit according to claim 1, wherein the heating water supply pipeline comprises a first heating water supply pipeline, a second heating water supply pipeline, a third heating water supply pipeline and a fourth heating water supply pipeline, and the heating water return pipeline comprises a first heating water return pipeline, a second heating water return pipeline, a third heating water return pipeline and a fourth heating water return pipeline; wherein:
the first heating water supply pipeline is communicated with the water outlet end of the heating water supply header and is used for conveying heating water of the natural gas pressurizing station; the first heating water return pipeline is communicated with the water inlet end of the heating water return header and is used for conveying heating water return of the natural gas pressurizing station;
the second heating water supply pipeline is communicated with the water outlet end of the heating water supply header and is used for conveying heating water of the first boiler room; the second heating water return pipeline is communicated with the water inlet end of the heating water return header and is used for conveying heating water return of the first boiler room;
the third heating water supply pipeline is communicated with the water outlet end of the heating water supply header and is used for conveying heating water of a second boiler room; the third heating water return pipeline is communicated with the water inlet end of the heating water return header and is used for conveying heating water return of the second boiler room;
the fourth heating water supply pipeline is communicated with the water outlet end of the heating water supply header and is used for conveying heating water of a gas turbine main plant; and the fourth heating water return pipeline is communicated with the water inlet end of the heating water return header and is used for conveying the heating water return of the gas turbine main plant.
6. The automatic temperature control device for the main plant of the gas-steam combined cycle unit according to claim 5, wherein the first, second, third and fourth heating water supply pipes are respectively provided with one water supply regulating valve.
7. The automatic temperature control device for the main plant of the gas-steam combined cycle unit according to claim 5, wherein the first heating water return pipeline, the second heating water return pipeline, the third heating water return pipeline and the fourth heating water return pipeline are respectively provided with one water return regulating valve set.
8. The automatic temperature control device for the main plant of the gas-steam combined cycle unit according to claim 1, wherein the first adjusting door, the second adjusting door and the bypass adjusting door are all manual adjusting doors.
9. The automatic temperature control device for the main plant of the gas-steam combined cycle unit according to claim 1, characterized in that the automatic temperature control device further comprises an alarm device, and a signal input end of the alarm device is electrically connected with the control device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202022934722.8U CN214198843U (en) | 2020-12-10 | 2020-12-10 | Automatic temperature control device for main plant of gas-steam combined cycle unit |
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| CN202022934722.8U CN214198843U (en) | 2020-12-10 | 2020-12-10 | Automatic temperature control device for main plant of gas-steam combined cycle unit |
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| CN214198843U true CN214198843U (en) | 2021-09-14 |
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|---|---|---|---|
| CN202022934722.8U Active CN214198843U (en) | 2020-12-10 | 2020-12-10 | Automatic temperature control device for main plant of gas-steam combined cycle unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214198843U (en) |
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2020
- 2020-12-10 CN CN202022934722.8U patent/CN214198843U/en active Active
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