CN212510516U - Device for realizing energy conservation of temperature and pressure reduction device in hot standby state - Google Patents
Device for realizing energy conservation of temperature and pressure reduction device in hot standby state Download PDFInfo
- Publication number
- CN212510516U CN212510516U CN202020397517.XU CN202020397517U CN212510516U CN 212510516 U CN212510516 U CN 212510516U CN 202020397517 U CN202020397517 U CN 202020397517U CN 212510516 U CN212510516 U CN 212510516U
- Authority
- CN
- China
- Prior art keywords
- steam
- temperature
- pressure reducing
- channel
- reducing device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Control Of Turbines (AREA)
Abstract
The utility model discloses a device for saving energy of a temperature and pressure reducing device in a hot standby state, wherein an auxiliary stop valve is additionally arranged at the front end of the temperature and pressure reducing device, and a steam expansion energy recovery channel and a standby channel are arranged on the auxiliary stop valve in parallel; during the standby period of the hot state, the self regulating valve of the temperature and pressure reducing device is always arranged at the position of full opening or a certain preset opening, the auxiliary stop valve and the standby channel are kept closed, when the temperature and pressure reducing device enters the hot standby state to operate, the primary steam passes through the steam expansion energy recovery channel connected with the auxiliary stop valve in parallel, the steam expansion energy recovery channel expands into low-parameter steam, namely secondary steam, and then the low-parameter steam is led into the pipeline communicated with the temperature and pressure reducing device after passing through the temperature and pressure reducing device and then is discharged into a pipe network. The utility model discloses can maintain the hot stand-by state of device, guarantee to satisfy in time the requirement of dropping into the operation at emergency, can effectively utilize the energy of steam parameter reduction in-process again.
Description
Technical Field
The utility model belongs to the concentrated or decentralized heat supply field of industry or life, concretely relates to be used for temperature and pressure reduction device to realize energy-conserving device at hot standby state.
Background
In order to reasonably and efficiently use energy, all power plants for cogeneration (including self-contained thermal power plants of industrial and mining enterprises such as society, chemical industry and the like) are provided with boilers with relatively high parameters, the generated high-temperature and high-pressure superheated steam enters a turbo generator unit which is correspondingly arranged to generate electric energy, the pressure and the temperature of the steam are reduced in the process of generating the electric energy, and then the steam exhaust (referring to a back pressure type steam turbine) or steam extraction (referring to a middle steam extraction type steam turbine) of the turbo generator unit (most of the conditions need to be sprayed with water to be cooled) is supplied to steam equipment or a production process of a user for use. In order to ensure that the steam utilization of the user side cannot be interrupted due to the shutdown of the generator unit, a 100% flow temperature and pressure reducing device or a temperature and pressure reducing device (as shown in fig. 6) connected with the steam turbine generator unit in parallel must be configured for the use of the generator unit when the generator unit is shutdown. And because the steam supplied to the hot users is generally used for process heating or driving a power device, sudden interruption or large fluctuation can affect the safe production of the users and even cause great economic loss. The steam turbine generator unit is a complex system, and the unexpected emergency stop condition cannot be completely avoided.
In order to ensure that the temperature and pressure reducing device or the temperature and pressure reducing device can be put into operation quickly when the steam supply to the outside is stopped instantly due to sudden stop of the steam turbine generator unit, the temperature and pressure reducing device or the temperature and pressure reducing device is required to be in a hot standby state (namely, steam with a certain flow is always kept to pass through the temperature and pressure reducing system).
Steam systems, which are important components of process industry energy systems, are responsible for providing the process industry with the required process steam, heat and power. The steam systems constructed and matched with one large-scale device are large and complex, the large-scale device is usually at least composed of a high-pressure superheated steam pipe network, a medium-pressure superheated steam pipe network and a low-pressure superheated steam pipe network, temperature and pressure reducing devices (or pressure and temperature reducing devices) are used for balancing and communicating among the pipe networks without exception according to the actual use condition of steam, and in order to achieve reasonable dispatching and quick response of the system, a part of the temperature and pressure reducing devices (or pressure and temperature reducing devices) need to be in hot standby.
So with regard to the desuperheating device or the hot standby of the desuperheating device, it is necessary from a theoretical point of view, and in practice it is often also the case. The hot standby of the temperature and pressure reducing device or the temperature and pressure reducing device is mentioned in a paper "test and optimization of steam supply by unexpected shutdown and rapid recovery of a generator set" published in journal of gas and heat power, volume 38, phase 2 (2018, month 2) and a paper "processing scheme of large leakage in operation of a pressure reducing and temperature reducing device (RTP)" published in journal of metallurgy power, phase 2 (total phase 180) in 2015.
In general, in order to keep the temperature and pressure reducing device (or the pressure reducing and temperature reducing device) hot, auxiliary shutoff valves in front of and behind the device are fully opened, and the steam flow rate is adjusted by a pressure reducing valve in the device. In the hot standby state, a small opening amount of a pressure reducing valve of the temperature and pressure reducing device (or the pressure and temperature reducing device) is manually set, a certain flow of steam is allowed to pass through, the steam can maintain the device body and related steam pipelines in a relatively high temperature state (the temperature difference from the normal operation temperature is generally not more than 100 ℃), and meanwhile, a temperature reducing valve is opened under the control of an automatic control system to adjust the flow of the temperature reducing water so as to maintain the required temperature value. It can also be said that the hot standby of the desuperheater and decompressor (or the pressure and desuperheater) is actually the low load operation of the desuperheater and decompressor (or the pressure and desuperheater).
Thus, first, during the entire hot standby of the desuperheater (or desuperheater), there is actually a certain amount of high parameter steam that is reduced by the unit to low parameter steam, which in a thermal power plant is equivalent to bypassing the steam turbine unit, which would otherwise output more electrical energy through the steam turbine unit.
Secondly, the design flow of the temperature and pressure reducing device (or the pressure and temperature reducer) which needs to be subjected to hot standby is relatively large, the caliber of the corresponding pressure reducing valve is also large, the adjustment error of the large-caliber valve during low flow adjustment is large, and the opening of the valve tends to be larger due to safety and other factors during operation, so that the steam flow is increased during hot standby.
Thirdly, the attemperation water regulation of a common attemperation and pressure reduction device (or a pressure reduction attemperator) is designed to mainly meet the regulation at the time of full flow, the operation at a lower load is often not stable, and most of the effective conditions for realizing the safe operation of the device in actual operation are that the steam flow is properly increased. The result is that more steam than is actually required for hot standby passes through the desuperheater (or desuperheater), resulting in more energy loss. (As to the small load operation of the temperature and pressure reducing apparatus (or the pressure and temperature reducer), the aforementioned article "treatment scheme for large leakage in the operation of the pressure and temperature Reducer (RTP)" is mentioned in detail)
The temperature and pressure reducing device (or pressure reducing and temperature reducing device) which is commonly used at the present stage has some defects when the device operates under a low-flow working condition. The Yawei steam temperature and pressure reducing valve and the application thereof in the petrochemical industry published in the fifth stage of 1994 in Liaoning chemical industry are discussed in more detail.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve among the above-mentioned prior art temperature and pressure reduction device (or decompression desuperheater) and have the problem of operation defect when high-grade energy loss and the little flow operating mode that can not avoid during hot standby, a hot standby state that both can the holding device is provided, guarantee to satisfy the requirement that in emergency in time drops into operation, can carry out the energy of steam parameter reduction in-process effectively utilizing again and be used for temperature and pressure reduction device to realize energy-conserving device at hot standby state.
The technical scheme of the utility model: a device for realizing energy conservation of a temperature and pressure reducing device in a hot standby state,
an auxiliary stop valve is additionally arranged at the front end of the temperature and pressure reducing device, and a steam expansion energy recovery channel and a standby channel are arranged on the auxiliary stop valve in parallel;
during the hot standby period, the self regulating valve of the temperature and pressure reducing device is always arranged at a full opening position or a certain preset opening position, and the auxiliary stop valve and the standby channel are kept closed,
when the temperature and pressure reducing device is operated in a hot standby state, primary steam in front of the auxiliary stop valve cannot directly access the device because the auxiliary stop valve is closed, but is expanded into low-parameter steam, namely secondary steam through the steam expansion energy recovery channel in parallel, introduced into a pipeline communicated with the temperature and pressure reducing device after passing through the auxiliary stop valve, and discharged into a pipe network after passing through the temperature and pressure reducing device;
the steam converts heat energy into mechanical energy in the process of expanding primary steam to secondary steam in the steam expansion energy recovery channel, and can be used for driving power equipment or driving a generator to generate electricity;
and when the steam expansion energy recovery channel fails or is shut down for other reasons, the standby channel is opened, hot standby steam is allowed to pass through, and the hot standby state of the equipment is maintained.
Preferably, the steam expansion energy recovery channel consists of a channel front isolation valve, a control and emergency blocking valve, a steam expansion device, equipment driven by the steam expansion device and a channel rear isolation valve; under the normal operation condition, the front and rear isolating valves and the control and emergency shutoff valves of the channel are in the fully opened state, the hot standby steam is converted by the steam expansion device in the steam expansion energy recovery channel to output mechanical energy, and the equipment driven by the steam expansion device is driven to operate, so that the recovery of available energy is realized.
Preferably, the standby channel is composed of a channel front stop valve, a throttle orifice plate, a channel desuperheater and a channel rear stop valve, and when the steam expansion energy recovery channel fails or stops due to other reasons, the channel front stop valve, the channel rear stop valve and the channel desuperheater are opened to allow hot standby steam to pass through, so that the hot standby state of the equipment is maintained.
Preferably, the steam expansion device is an axial flow turbine, a radial steam turbine expander or a screw expander, and the steam flow parameters of the steam expansion device are determined through empirical estimation, precise calculation or experimental verification.
The steam expansion device of the utility model can also adopt other similar steam expansion mechanical equipment.
Preferably, the temperature and pressure reducing device is a split type temperature and pressure reducing device with a device pressure reducer and a device temperature reducer separately arranged or an integrated type temperature and pressure reducing device with a device pressure reducer and a device temperature reducer integrally arranged.
Before the operation of the heat standby, all valves are in a closed state, when the operation is carried out, firstly opening a front isolation valve of the device and a rear isolation valve of the device, then opening a front isolation valve of a channel and a rear isolation valve of the channel, and then opening a steam expansion device, namely opening a control and emergency shutoff valve, so that the system is put into operation; when the steam expansion device is shut down due to reasons, the control and emergency blocking valve is automatically or forcibly closed, the front and rear stop valves of the channel and the channel desuperheater are opened by a manual or intelligent interlocking system, the standby channel is opened for operation, and then the front and rear isolation valves of the channel are closed, so that the steam expansion energy recovery channel is closed, and necessary operation is performed on the steam expansion energy recovery channel; when the temperature and pressure reducing device is required to be switched to an operating state from hot standby, the auxiliary stop valve is opened, the pressure reducing valve of the operating device and the desuperheater are operated, the front and rear isolating valves of the channel and the control and emergency blocking valves are closed simultaneously, or the front and rear stop valves of the channel and the channel desuperheater are closed, and the switching of the temperature and pressure reducing device from hot standby to operation can be realized.
A device for realizing energy saving of a temperature and pressure reducing device in a hot standby state is characterized in that a steam expansion energy recovery channel and a standby channel are directly arranged on the temperature and pressure reducing device in parallel;
during the hot standby period, the own device pressure reducer of the temperature and pressure reducing device and the parallel standby channel are kept closed,
when the temperature and pressure reducing device is in a hot standby state, the primary steam cannot directly enter the device due to the closing of the pressure reducer of the device, but is expanded into low-parameter steam, namely secondary steam, through the steam expansion energy recovery channel connected in parallel, then introduced into a pipeline communicated with the temperature and pressure reducing device, and discharged into a pipe network after passing through the temperature and pressure reducing device;
the steam converts heat energy into mechanical energy in the process of expanding primary steam to secondary steam in the steam expansion energy recovery channel, and can be used for driving power equipment or driving a generator to generate electricity;
and when the steam expansion energy recovery channel fails or is shut down for other reasons, the standby channel is opened, hot standby steam is allowed to pass through, and the hot standby state of the equipment is maintained.
Preferably, the temperature and pressure reducing device is a split type temperature and pressure reducing device with a pressure reducer and a temperature reducer separately arranged, and the steam expansion energy recovery channel and the standby channel are both connected in parallel on the pressure reducer.
Preferably, the temperature and pressure reducing device is an integrated temperature and pressure reducing device with a pressure reducer and a temperature reducer integrated.
The utility model has the advantages that: 1. the available energy of the steam used by the temperature and pressure reducing device in the hot standby period can be recycled, the effective utilization rate of energy is improved, and the energy conservation and emission reduction of enterprises are facilitated; 2. the safe and reliable operation of the equipment is facilitated: the steam passes through the expansion device, the steam pressure is reduced, and the temperature is reduced at the same time, so that the temperature reduction effect is realized. Because the steam expansion equipment has mature design and calculation methods, the steam flow and the exhaust steam temperature of the hot standby operation can be accurately controlled through targeted design and manufacture according to the use parameter requirements of the individual temperature and pressure reducing devices. Compared with the throttling process of reducing pressure through a valve in the prior art, the temperature-reducing water control valve does not need to be opened any more, so that the temperature-reducing water control valve is prevented from operating for a long time under the low-load severe working condition, the reliability of equipment is improved, and the service life of the equipment is prolonged.
Drawings
Fig. 1 is a schematic flow chart of embodiment 1 of the present invention;
fig. 2 is a schematic flow chart of embodiment 2 of the present invention;
fig. 3 is a schematic flow chart of embodiment 3 of the present invention;
fig. 4 is a schematic flow chart of embodiment 4 of the present invention;
fig. 5 is a schematic flow chart of embodiment 5 of the present invention;
fig. 6 is a schematic flow chart of embodiment 6 of the present invention;
FIG. 7 is a schematic view of a conventional temperature and pressure reducing device in the background art of the present invention;
FIG. 1. device front isolation valve; 2. a relief valve is installed; 3. a plant desuperheater; 4. a post-installation isolation valve; 5. a channel front shutoff valve; 6. a restriction orifice plate; 7. a channel desuperheater; 8. a rear channel stop valve; 9. a pre-channel isolation valve; 10. control and critical shutoff valves; 11. a steam expansion device; 12. a device driven by a steam expansion means; 13. a post-channel isolation valve; auxiliary stop valve.
Detailed Description
The present invention will be described in further detail with reference to the following drawings and examples, but the present invention is not limited thereto.
Example 1
As shown in figure 1, the temperature and pressure reducing device is a split type temperature and pressure reducing device which is provided with a pressure reducer and a temperature reducer separately, and a plurality of components are added on the basis of the split type temperature and pressure reducing device to form the device and the process flow provided by the utility model,
the utility model discloses in respectively constitute and the function introduces: the added components form two functional channels, wherein a front channel isolation valve 9, a control and emergency blocking valve 10, a steam expansion device 11, equipment 12 driven by the steam expansion device and a rear channel isolation valve 13 form a steam expansion energy recovery channel; in normal operation, the front isolation valve 9, the rear channel isolation valve 13 and the control and emergency shutoff valve 10 are all in an open state, hot standby steam passes through the channel, and when the hot standby steam passes through the steam expansion device 11, the hot standby steam is converted by the steam expansion device 11 to output mechanical energy, so that the equipment 12 driven by the steam expansion device is driven to operate, and the recovery of available energy is realized. The front channel stop valve 5, the throttle orifice plate 6, the channel desuperheater 7 and the rear channel stop valve 8 form a standby channel, and when the steam expansion energy recovery channel fails or stops due to other reasons, the front channel stop valve 5, the rear channel stop valve 8 and the channel desuperheater 7 are opened to allow hot standby steam to pass through and maintain the hot standby state of the equipment; and the front stop valve 5, the rear stop valve 8 and the channel desuperheater 7 of the channel are in a closed state under the normal operation working condition.
Butt joint of each functional channel and the original technical process: an auxiliary stop valve 1a is additionally arranged at a steam leading-in end (customarily called a primary steam end) of a device pressure reducer 2 and a device temperature reducer 3 of the temperature and pressure reducing device (the action mode can be manual, electric, pneumatic or hydraulic, the action mode and the response speed need to be according to the heat supply (steam supply) characteristics and the user requirements, if the user has higher requirements on the steam supply grade and the response speed, a quick action type valve needs to be selected, and the original isolation valve 1 of the system can be used under the conditions of low pressure difference between the front and the back of the valve and the like. A steam pipeline (the caliber is determined by the amount of hot standby steam required by calculation) is connected to the point A on the pipeline in front of the auxiliary stop valve 1a, a three-way pipe is arranged at the point B and is respectively communicated to a standby channel and a steam expansion energy recovery channel, and then the steam pipelines are combined at the point C and are connected to the original steam pipeline from the point D.
Description of the operation: before the operation is ready for use, all valves are in a closed state (except for necessary drain valves, the drain valves are operated according to conventional regulations, and are not described herein in detail). When the system is put into operation, the front isolation valve 1 and the rear isolation valve 2 of the device are firstly opened, then the front isolation valve 9 and the rear isolation valve 13 of the channel are opened, and then the steam expansion device 11, namely the control and emergency shutoff valve 10 is opened (because different devices have different methods and requirements for opening the valve due to the influence of factors such as driven devices and the like, the warm-up process of the heating pipe can also be related, so the specific operation is carried out according to the requirements of actual devices), and the system is put into operation. When the steam expansion device 11 is shut down due to a reason, the control and emergency blocking valve 10 is automatically or forcibly closed (usually completed by an automatic control system), the front channel stop valve 5, the rear channel stop valve 8 and the channel desuperheater 7 are opened by a manual or intelligent interlocking system, the standby channel is randomly opened to operate, and then the front channel isolation valve 9 and the rear channel isolation valve 13 are closed to realize the closing of the steam expansion energy recovery channel so as to carry out necessary operation (such as maintenance and overhaul and the like). When the temperature and pressure reduction device is required to be switched from a hot standby state to an operating state, the auxiliary stop valve 1a is opened, the device pressure reduction valve 2 and the device desuperheater 3 of the temperature and pressure reduction device are operated, and the front isolation valve 9, the control and emergency blocking valve 10 and the rear isolation valve 13 of the passage of the valve are closed simultaneously (if the standby passage is operated at the moment, the front stop valve 5, the rear stop valve 8 and the passage desuperheater 7 of the passage are closed), so that the switching from the hot standby state to the operating state of the temperature and pressure reduction device can be realized.
The points to be considered are: 1. a steam expansion device: carrying out model selection or targeted design according to the hot standby steam quantity and the secondary steam temperature required by the temperature and pressure reducing device; 2. opening degree of the pressure reducer: if the requirements of the user on the grade and the response speed of steam supply are not high, the opening degree of a pressure reducing valve of the temperature and pressure reducing device can be set to be a rated opening degree or 100 percent opening degree in the standby period; on the contrary, if the user has high requirements on the grade and the response speed of the steam supply, the opening of the pressure reducing valve is suitably set to the rated opening when the rated steam supply amount is required, so that when the emergency switching is required, the quick response can be realized only by quickly opening the auxiliary stop valve 1a. A throttle orifice plate: the aperture of the pore plate is determined according to the amount of hot standby steam.
Example 2
As shown in fig. 2, the temperature and pressure reducing device is a split type temperature and pressure reducing device in which a device pressure reducer and a device temperature reducer are separately provided, and two additional functional passages (a steam expansion energy recovery passage and a standby passage) are connected in parallel with the device pressure reducer 2 of the temperature and pressure reducing device. The pressure reducing valve 2 of the device is in a closed state in a hot standby state, hot standby steam flows through the steam expansion energy recovery channel (A-B-9-10-11-13-C-D in the figure) to realize temperature reduction, pressure reduction and energy recovery in a normal working condition, and flows through the standby channel (A-B-5-6-7-8-C-D in the figure) to ensure that the device is continuously hot standby in a special condition.
Example 3
As shown in fig. 3, the temperature and pressure reducing device is an integrated temperature and pressure reducing device in which a device pressure reducer and a device temperature reducer are integrally arranged, and two additional functional channels (a steam expansion energy recovery channel and a standby channel) are connected in parallel with the temperature and pressure reducing device as a whole. The whole temperature and pressure reduction device is in a closed state in a hot standby state, hot standby steam flows through the steam expansion energy recovery channel (A-B-9-10-11-13-C-D in the figure) to realize temperature and pressure reduction and energy recovery in a normal working condition, and flows through the standby channel (A-B-5-6-7-8-C-D in the figure) to ensure that the device is continuously hot standby in a special condition.
Example 4
As shown in fig. 4, the temperature and pressure reducing device is an integrated temperature and pressure reducing device in which a device pressure reducer and a device temperature reducer are integrally provided, and two additional functional passages (a steam expansion energy recovery passage and a backup passage) are connected in parallel with an auxiliary stop valve 1a provided in front of the temperature and pressure reducing device. When in a hot standby state, the auxiliary stop valve 1a is closed, the whole temperature and pressure reduction device is in an open state (but temperature reduction water is not put into the device), and when in a normal working condition, hot standby steam flows through the steam expansion energy recovery channel (A-B-9-10-11-13-C-D in the figure) to realize temperature reduction, pressure reduction and energy recovery, and when in a special condition, the hot standby steam flows through the standby channel (A-B-5-6-7-8-C-D in the figure) to ensure that the device is continuously hot standby.
Example 5
For all the embodiments (1-4), the combination of the orifice 6 of the spare passage and the passage desuperheater 7 can be alternatively implemented by using an integrated or split type desuperheating and depressurizing device.
Example 6
For all embodiments (1-4), the standby channel is connected with the steam expansion energy recovery channel through the three-way valve 8, and when the normal hot standby working condition is required to be switched to a special working condition, the three-way valve 8 cuts off the energy recovery channel through internal switching, and simultaneously opens the standby channel. The component composition of the spare passage can use the method of the previous embodiments, and the steam flow can also be directly limited by the caliber of the three-way valve.
Claims (8)
1. The utility model provides a device that is used for temperature and pressure reduction device to realize energy-conservation in hot standby state which characterized in that:
the front end of the temperature and pressure reducing device is provided with an auxiliary stop valve, a steam expansion energy recovery channel and a standby channel, and the auxiliary stop valve, the steam expansion energy recovery channel and the standby channel are connected in parallel;
the self regulating valve of the temperature and pressure reducing device is always arranged at a full opening position or a certain preset opening position during the hot standby period, the auxiliary stop valve and the standby channel are kept closed during the hot standby period,
the steam expansion energy recovery channel is used for expanding primary steam in front of the auxiliary stop valve into low-parameter steam, namely secondary steam, guiding the low-parameter steam into a pipeline communicated with the temperature and pressure reducing device after the low-parameter steam passes through the temperature and pressure reducing device, discharging the low-parameter steam into a pipe network after the low-parameter steam passes through the temperature and pressure reducing device, and converting heat energy into mechanical energy for driving power equipment or driving a generator to generate electricity;
the standby channel is opened when the steam expansion energy recovery channel fails or is shut down for other reasons, hot standby steam is passed through, and the hot standby state of the equipment is maintained.
2. The device for saving energy of a temperature and pressure reducing device in a hot standby state as claimed in claim 1, wherein the steam expansion energy recovery channel consists of a pre-channel isolation valve, a control and emergency blocking valve, a steam expansion device, equipment driven by the steam expansion device and a post-channel isolation valve; under the normal operation condition, the front and rear isolating valves and the control and emergency shutoff valves of the channel are in the fully opened state, the hot standby steam is converted by the steam expansion device in the steam expansion energy recovery channel to output mechanical energy, and the equipment driven by the steam expansion device is driven to operate, so that the recovery of available energy is realized.
3. The device for saving energy of a temperature and pressure reducing device in a hot standby state as claimed in claim 2, wherein the standby passage is composed of a passage front stop valve, a throttle orifice plate, a passage desuperheater and a passage rear stop valve, and when the steam expansion energy recovery passage fails or stops due to other reasons, the passage front stop valve, the passage rear stop valve and the passage desuperheater are opened to allow hot standby steam to pass through, so that the hot standby state of the device is maintained.
4. The device for saving energy of a temperature and pressure reducing device in a hot standby state as claimed in claim 2, wherein the steam expansion device is an axial flow turbine, a radial steam turbine expander or a screw expander, and steam flow parameters of the steam expansion device are determined through empirical estimation, precise calculation or experimental verification.
5. The device for realizing energy saving of the temperature and pressure reducing device in the hot standby state as claimed in claim 1, wherein the temperature and pressure reducing device is a split type temperature and pressure reducing device with a device pressure reducer and a device temperature reducer separately arranged or an integrated type temperature and pressure reducing device with a device pressure reducer and a device temperature reducer integrally arranged.
6. A device for realizing energy saving of a temperature and pressure reducing device in a hot standby state is characterized in that:
the temperature and pressure reducing device is connected with a steam expansion energy recovery channel and a standby channel in parallel;
the desuperheating pressure reducing device's own device pressure reducer and the parallel backup channel remain closed during hot backup,
the steam expansion energy recovery channel is used for leading the primary steam into a pipeline communicated with the temperature and pressure reduction device after the primary steam is expanded into low-parameter steam, namely secondary steam, and discharging the low-parameter steam into a pipe network after passing through the temperature and pressure reduction device, wherein the heat energy is converted into mechanical energy for driving power equipment or driving a generator to generate electricity;
the standby channel is opened when the steam expansion energy recovery channel fails or is shut down for other reasons, hot standby steam is passed through, and the hot standby state of the equipment is maintained.
7. The device for saving energy of a temperature and pressure reducing device in a hot standby state as claimed in claim 6, wherein the temperature and pressure reducing device is a split type temperature and pressure reducing device with a pressure reducer and a temperature reducer arranged separately, and the steam expansion energy recovery channel and a standby channel are connected in parallel to the pressure reducer.
8. The device for saving energy of the temperature and pressure reducing device in the hot standby state as claimed in claim 6, wherein the temperature and pressure reducing device is an integrated temperature and pressure reducing device with a pressure reducer and a temperature reducer integrated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020397517.XU CN212510516U (en) | 2020-03-25 | 2020-03-25 | Device for realizing energy conservation of temperature and pressure reduction device in hot standby state |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020397517.XU CN212510516U (en) | 2020-03-25 | 2020-03-25 | Device for realizing energy conservation of temperature and pressure reduction device in hot standby state |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212510516U true CN212510516U (en) | 2021-02-09 |
Family
ID=74440595
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020397517.XU Active CN212510516U (en) | 2020-03-25 | 2020-03-25 | Device for realizing energy conservation of temperature and pressure reduction device in hot standby state |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212510516U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113819400A (en) * | 2021-07-30 | 2021-12-21 | 西安西热节能技术有限公司 | Multi-source integrated automatic switching combined steam supply system and method |
-
2020
- 2020-03-25 CN CN202020397517.XU patent/CN212510516U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113819400A (en) * | 2021-07-30 | 2021-12-21 | 西安西热节能技术有限公司 | Multi-source integrated automatic switching combined steam supply system and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109653810B (en) | One furnace with two-machine switching operation thermodynamic system | |
| CN210118175U (en) | Pressurized water reactor nuclear power unit two-loop thermodynamic system self-adaptation steam supply system | |
| CN111255536B (en) | FCB operation method of gas-steam unit power plant | |
| CN110500645B (en) | Optimized control method for improving unit bypass heat supply operation reliability | |
| CN111207300A (en) | Device and method for realizing energy saving of temperature and pressure reduction device in hot standby state | |
| CN112523821A (en) | Network source coordinated heating system and method with self-adaptive steam extraction and heating load | |
| CN212510516U (en) | Device for realizing energy conservation of temperature and pressure reduction device in hot standby state | |
| CN112879110A (en) | Thermodynamic system with one furnace and two machines operating at ultralow load and switching method thereof | |
| CN109653819B (en) | Deep peak-shaving steam turbine system of cogeneration unit and control method | |
| CN112360580A (en) | Rapid cooling mode for steam turbine after shutdown by using waste heat of boiler | |
| CN113374539B (en) | Steam inlet control system of double-cylinder double-pressure waste heat generating set and steam supplementing control method thereof | |
| CN111042879A (en) | Wide-load high-efficiency steam turbine set with high and medium pressure cylinders capable of being cut off in separate mode | |
| CN210738682U (en) | Distributed energy power station system | |
| CN114233403A (en) | High-efficient turbo electric power generation system of degree of depth peak regulation that split-axis was arranged | |
| CN113898423A (en) | High-efficient turbo electric power generation system of degree of depth peak regulation that unipolar was arranged | |
| CN113107625A (en) | Multi-heat-source wide-load low-pressure industrial steam supply system and working method | |
| CN113217905A (en) | System for optimizing industrial steam supply and temperature reduction water source and working method | |
| CN112031883A (en) | Two-stage adjusting system suitable for middle adjusting valve participating in adjusting and lifting industrial steam supply parameters | |
| CN214836586U (en) | Wide-load industrial steam supply system based on residual pressure gradient utilization | |
| CN115142919B (en) | Zero-power internet surfing peak regulation method based on low-pressure cylinder zero-output combined electrode boiler | |
| CN216406918U (en) | High-efficient turbo electric power generation system of degree of depth peak regulation that split-axis was arranged | |
| CN110686227B (en) | Intermediate reheat steam power generation system | |
| CN218780387U (en) | Wide-load flexible heat supply operation device for thermal power plant | |
| CN212319772U (en) | Device for improving stability of boiler hydrodynamic working condition and denitration inlet smoke temperature in thermal power plant | |
| CN214660379U (en) | Thermodynamic system with one furnace and two machines operating at ultralow load |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |