CN212454999U - Steam jet type pressure matcher - Google Patents
Steam jet type pressure matcher Download PDFInfo
- Publication number
- CN212454999U CN212454999U CN202020767081.9U CN202020767081U CN212454999U CN 212454999 U CN212454999 U CN 212454999U CN 202020767081 U CN202020767081 U CN 202020767081U CN 212454999 U CN212454999 U CN 212454999U
- Authority
- CN
- China
- Prior art keywords
- steam
- pressure
- diffusion
- chamber
- section
- 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.)
- Withdrawn - After Issue
Links
- 238000009792 diffusion process Methods 0.000 claims abstract description 40
- 238000002347 injection Methods 0.000 claims description 30
- 239000007924 injection Substances 0.000 claims description 30
- 238000005507 spraying Methods 0.000 claims description 4
- 238000010793 Steam injection (oil industry) Methods 0.000 claims 5
- 238000000605 extraction Methods 0.000 abstract description 9
- 239000007921 spray Substances 0.000 abstract description 2
- 230000009467 reduction Effects 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- 239000002918 waste heat Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Landscapes
- Jet Pumps And Other Pumps (AREA)
Abstract
The utility model discloses a steam jet type pressure matcher, including electric actuator, hyperbaric chamber, accept room, mixed diffusion room and mixed steam outlet section establish ties and set up and pass through supporting seat fixed mounting. The utility model discloses utilize high pressure drive steam to pass through the nozzle supersonic speed and spray, form the low pressure at the throat, inhale low pressure steam, through mixing diffusion again, step up the purpose that reaches the requirement parameter with low pressure steam. Adopt the pressure matcher can provide with the unmatched heat supply steam of steam turbine extraction steam mouth pressure parameter, compare with adopting high-pressure steam throttle, avoided a large amount of energy losses, the economic nature is showing and is improving.
Description
Technical Field
The utility model relates to a pressure adapter, a steam jet formula pressure adapter specifically says so belongs to heat supply steam transmission and equips technical field.
Background
At present, in thermoelectric projects near a plurality of industrial parks, 1.6MPa low-pressure steam is provided for heat supply pipe networks of peripheral enterprises. Because some thermoelectric projects are put into production earlier, 4.3MPa heat supply is not considered in thermoelectric design, 4.3MPa steam level is not available at all, and heat supply capacity is not available. The heat supply system is reformed generally that domestic unit mainly has 4 kinds of modes, and high temperature high pressure steam temperature reduction decompression heat supply, steam turbine cylinder are trompil again, take out direct extraction in the steam extraction pipeline and technique such as pressure adapter promptly, these several kinds of heat supply reform transform modes all have actual operation achievement, and the operation is good.
If high-temperature high-pressure steam is adopted to directly supply heat to the outside after temperature and pressure reduction, the thermal efficiency of the whole plant is greatly reduced, the heat supply economy of the whole plant is reduced, and the large environment for energy conservation and emission reduction is not facilitated. The direct steam extraction scheme and the cylinder hole opening scheme are adopted, and the equipment cannot meet the requirement of direct heat supply, so that the steam cannot be directly extracted from the steam extraction of the machine type for steam supply. According to the improvement suggestion that the steam turbine factory provided, can take and open a hole the scheme behind the regulation stage, newly increase a steam extraction behind the regulation stage of former unit, but this scheme can cause certain influence to current through-flow, relates to the intensity of through-flow blade, and thrust has some changes, and the adjustable steam extraction of two-stage in addition influences the operation complicacy each other, can't ensure the security and the thermal behavior of unit. The overall steam turbine transformation scheme is adopted, the unit is required to be thoroughly transformed, boundary parameters are planned again according to heat supply requirements, and the design work of the steam turbine is carried out. The device comprises an inner cylinder, an outer cylinder, a rotor, a through-flow blade, a steam seal and other body equipment which are integrally replaced, a bearing seat and a valve are used for service, and the steam turbine foundation is ensured to be unchanged and modified. The reconstruction period of the scheme is about 8-10 months, and the reconstruction cost and the installation cost of a single steam turbine body are about 1500 ten thousand. The transformation range is very large, the period is long, the investment is overlarge, the regenerative cycle is influenced, and the adoption is not recommended.
Adopt the pressure matcher scheme, the pressure matcher is the equipment that utilizes the energy of high-pressure steam to improve the pressure of low-pressure steam: high pressure is used for driving steam to be sprayed through a nozzle in a supersonic speed mode, low pressure is formed at the throat part, the low pressure steam is sucked in, and the low pressure steam is subjected to mixing diffusion to increase the pressure to achieve the purpose of meeting the requirement on parameters. At present, the conventional pressure matcher cannot meet the requirement of a high-power back-pressure steam turbine generator unit of a thermal power plant, and the pressure matcher of a brand-new mechanism needs to be redesigned to meet the requirement of low-pressure steam boosting and heat supplying of the thermal power plant.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: problem and not enough to exist among the prior art, the utility model provides a steam jet formula pressure adapter through the design improvement to the structure, has solved the problem that the sprayer flow can not be adjusted to the new needs that reach waste heat recovery and reform transform of power plant heating system have been satisfied.
The technical scheme is as follows: the utility model provides a steam jet type pressure matcher, which comprises an electric actuator, a high-pressure chamber, a receiving chamber, a mixed diffusion chamber and a mixed steam outlet section, wherein the high-pressure chamber, the receiving chamber, the mixed diffusion chamber and the mixed steam outlet section are arranged in series and are fixedly installed through a supporting seat;
the high-pressure chamber is provided with a working steam inlet, and the working steam inlet is connected with high-pressure steam and sent into the receiving chamber; the electric actuator is mounted on the high-pressure chamber;
the receiving chamber is provided with an injection cavity, the injection cavity is connected with the low-pressure steam suction inlet, an injection nozzle is arranged in the injection cavity, and the injection nozzle is controlled to be opened by the electric actuator; the injection nozzle mixes the high-pressure steam in the high-pressure chamber with the low-pressure steam in the injection cavity and sends the mixed steam into the mixing diffusion chamber;
the mixed diffusion chamber comprises a mixing section and a diffusion section, the inlet of the mixing section is connected with the injection nozzle on the same axis, the diffusion section is of a horn-shaped structure with one end being small in caliber and the other end being large in caliber, the small caliber end of the diffusion section is connected with the mixing section, the large caliber end of the diffusion section is communicated with the mixed steam outlet end, the mixed steam outlet section is connected with the steam conveying pipeline, and the inlet of the mixing section is provided with a flow guide expansion port.
The utility model discloses a further inject technical scheme, aforementioned steam jet formula pressure matcher, accept indoor three injection cavity that is equipped with, every injection cavity corresponds and sets up injection nozzle. Three groups of mixing sections and diffusion sections are arranged in the mixing diffusion chamber, and each group of mixing sections and diffusion sections is arranged corresponding to the injection cavity.
In the steam jet type pressure matcher, the jet nozzle is provided with the adjusting assembly, and the electric actuator drives the adjusting assembly to open the jet nozzle.
Further, the support seat is a saddle support seat, and the saddle support seat is fixedly connected through a civil embedded part in a welding mode, so that the stability of equipment installation is ensured.
The utility model has the advantages that: compared with the prior art, the utility model discloses utilize high pressure drive steam to pass through the nozzle supersonic speed and spray, form the low pressure at the throat, inhale low pressure steam, through mixing the diffusion again, step up the purpose that reaches the requirement parameter with low pressure steam. High-pressure steam is injected to inject lower-pressure steam or low-pressure waste heat steam exhausted by a steam turbine part steam extraction and backpressure unit through high-speed injection, so that the pressure is increased to meet the requirements of various users with different steam pressures. Three ejectors are arranged in the pressure matcher, and each ejector consists of a nozzle, a mixing chamber and a corresponding diffusion section; the brake control device is independently arranged on each nozzle, the pressure and the flow of the matcher are uniformly controlled, the sprayer can be used under the condition that the steam flow of a user is changed greatly, and the problem that the flow of the sprayer cannot be adjusted is solved, so that the requirements of new construction and waste heat recovery transformation of a heat supply system of a power plant are met. Adopt the pressure matcher can provide with the unmatched heat supply steam of steam turbine extraction steam mouth pressure parameter, compare with adopting high-pressure steam throttle, avoided a large amount of energy losses, the economic nature is showing and is improving.
Drawings
Fig. 1 is a schematic cross-sectional view of the present embodiment.
Fig. 2 is a schematic view of the external structure of the present embodiment.
Fig. 3 is a schematic view of fig. 2 taken along direction a.
In the figure: 1. the working steam inlet 2, the high-pressure chamber 3, the low-pressure steam suction inlet 4, the adjusting assembly 5, the receiving chamber 6, the mixing section 7, the diffusion section 8, the mixed steam outlet section 9, the electric actuator 10 and the support seat.
Detailed Description
The invention will be further elucidated with reference to the drawings and the specific embodiments.
Example 1
The embodiment provides a steam jet type pressure matcher, which has a structure shown in fig. 1 to 3, and comprises an electric actuator 9, a high-pressure chamber 2, a receiving chamber 5, a mixed diffusion chamber and a mixed steam outlet section 8, wherein the high-pressure chamber, the receiving chamber, the mixed diffusion chamber and the mixed steam outlet section are arranged in series and fixedly installed through a support seat 10, the support seat 10 is a saddle-type support seat, and the saddle-type support seat is welded and fixed through civil embedded parts; the high-pressure chamber 2 is provided with a working steam inlet 1, and the working steam inlet 1 is connected with high-pressure steam and sent into a receiving chamber 5; the electric actuator 9 is arranged on the high-pressure chamber; the receiving chamber is provided with an injection cavity which is connected with the low-pressure steam suction inlet 3, and an injection nozzle is arranged in the injection cavity and is controlled to be opened by an electric actuator; the injection nozzle sends the low-pressure steam in the high-pressure steam mixed injection cavity in the high-pressure chamber into the mixed diffusion chamber; the mixed diffusion chamber comprises a mixing section 6 and a diffusion section 7, an inlet of the mixing section and the injection nozzle are on the same axis, a flow guide expansion port is arranged at the inlet of the mixing section, the diffusion section is of a horn-shaped structure with a small caliber at one end and a large caliber at the other end, the small caliber end of the diffusion section is connected with the mixing section, the large caliber end of the diffusion section is communicated with a mixed steam outlet end, and the mixed steam outlet section 8 is connected with a steam conveying pipeline.
In the embodiment, the receiving chamber is internally provided with three jetting cavities, and each jetting cavity is correspondingly provided with a jetting nozzle; three groups of mixing sections 6 and diffusion sections 7 are arranged in the mixing diffusion chamber, and each group of mixing sections and diffusion sections are arranged corresponding to the injection cavity; the spraying nozzle is provided with an adjusting component 4, and the adjusting component is driven by an electric actuator 9 to realize the opening size of the spraying nozzle.
After the pressure matcher is put into production, part of the operating parameters are as follows:
as can be seen from the table above, the opening of the pressure matcher regulating valve is basically similar to the design value with the corresponding high-pressure steam inlet amount and the corresponding 2.6MPa suction amount, and the injection index is basically close to the estimated value before commissioning. Therefore, the linear adjusting effect of the pressure matching adjusting valve is obvious.
The pressure matcher is equipment for improving the pressure of low-pressure steam by utilizing the energy of the high-pressure steam: high pressure is used for driving steam to be sprayed through a nozzle in a supersonic speed mode, low pressure is formed at the throat part, the low pressure steam is sucked in, and the low pressure steam is subjected to mixing diffusion to increase the pressure to achieve the purpose of meeting the requirement on parameters. The thermal efficiency of the pressure matcher is calculated according to the running condition of the heating system during commissioning, as shown in the following table:
as can be seen from the above table, the thermal efficiency of the matching device of the present embodiment is maintained between 94% and 97%.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications can be made without departing from the principle of the present invention, and these modifications should also be regarded as the protection scope of the present invention.
Claims (6)
1. The utility model provides a steam jet type pressure matcher, includes electric actuator, high-pressure chamber, accepts room, mixes diffusion room and mixed steam export section, its characterized in that: the high-pressure chamber, the receiving chamber, the mixing diffusion chamber and the mixed steam outlet section are arranged in series and fixedly installed through a supporting seat;
the high-pressure chamber is provided with a working steam inlet, and the working steam inlet is connected with high-pressure steam and sent into the receiving chamber; the electric actuator is mounted on the high-pressure chamber;
the receiving chamber is provided with an injection cavity, the injection cavity is connected with the low-pressure steam suction inlet, an injection nozzle is arranged in the injection cavity, and the injection nozzle is controlled to be opened by the electric actuator; the injection nozzle mixes the high-pressure steam in the high-pressure chamber with the low-pressure steam in the injection cavity and sends the mixed steam into the mixing diffusion chamber;
the mixed diffusion chamber comprises a mixing section and a diffusion section, the inlet of the mixing section is connected with the injection nozzle on the same axis, the diffusion section is of a horn-shaped structure with one end being small in caliber and the other end being large in caliber, the small caliber end of the diffusion section is connected with the mixing section, the large caliber end of the diffusion section is communicated with the outlet end of the mixed steam, and the outlet section of the mixed steam is connected with the steam conveying pipeline.
2. The steam injection type pressure matcher of claim 1, wherein: the receiving chamber is internally provided with three jetting cavities, and each jetting cavity is correspondingly provided with a jetting nozzle.
3. The steam injection type pressure matcher of claim 2, wherein: three groups of mixing sections and diffusion sections are arranged in the mixing diffusion chamber, and each group of mixing sections and diffusion sections is arranged corresponding to the injection cavity.
4. The steam injection type pressure matcher of claim 1, wherein: and the spraying nozzle is provided with an adjusting assembly, and the adjusting assembly is driven by the electric actuator to realize the opening size of the spraying nozzle.
5. The steam injection type pressure matcher of claim 1, wherein: the supporting seat is a saddle type supporting seat, and the saddle type supporting seat is fixedly connected through a civil embedded part.
6. The steam injection type pressure matcher of claim 1, wherein: and a flow guide expansion port is arranged at the inlet of the mixing section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020767081.9U CN212454999U (en) | 2020-05-11 | 2020-05-11 | Steam jet type pressure matcher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020767081.9U CN212454999U (en) | 2020-05-11 | 2020-05-11 | Steam jet type pressure matcher |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212454999U true CN212454999U (en) | 2021-02-02 |
Family
ID=74464864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020767081.9U Withdrawn - After Issue CN212454999U (en) | 2020-05-11 | 2020-05-11 | Steam jet type pressure matcher |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212454999U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200498372Y1 (en) | 2022-04-08 | 2024-09-25 | 주식회사 남부 | Compressed-air jet fan |
-
2020
- 2020-05-11 CN CN202020767081.9U patent/CN212454999U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200498372Y1 (en) | 2022-04-08 | 2024-09-25 | 주식회사 남부 | Compressed-air jet fan |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110145376B (en) | Boiler and steam turbine decoupling system based on increase steam turbine | |
| CN109812866B (en) | Two-stage tandem type exhaust steam waste heat recovery heating system | |
| CN202745952U (en) | Low-entropy mixed-combustion gas liquid injection air-powered engine | |
| CN106948879A (en) | A kind of joined by middle pitch adjusts the industrial steam-supplying system of the mesohigh cooperated with vapour compression machine | |
| CN107060902A (en) | Novel steam is depressured temperature reducing system | |
| CN108468575B (en) | System for changing extraction condensing unit into back pressure unit based on injection heat pump and operation method thereof | |
| CN201671659U (en) | Steam-jet type turbine | |
| CN109026855B (en) | Enhanced steam ejector system matched with unit sliding pressure optimization | |
| CN212454999U (en) | Steam jet type pressure matcher | |
| CN101936196B (en) | Multi-source steam pressure matcher | |
| CN114383176A (en) | Supercritical reheating double-backpressure-machine double-steam-extraction industrial heating system | |
| CN206386154U (en) | A kind of Novel steam is depressured temperature reducing system | |
| CN220098990U (en) | Air supply device for waste heat recovery and steam cascade utilization of biological fermentation | |
| CN111140297B (en) | High-energy-density energy storage and release system and energy storage and release method | |
| CN211371929U (en) | Input steam pressure adjusting device of steam vacuum pump | |
| CN208184799U (en) | Extraction and condensing unit based on jet heat pump changes back pressure unit system | |
| CN216198489U (en) | Gas turbine | |
| CN214836764U (en) | Gas mixing mechanism for large-cylinder-diameter gas engine | |
| CN212389397U (en) | Novel pressure matcher system | |
| CN106948942A (en) | A kind of high-efficiency gas turbine | |
| CN110925036B (en) | Low-pressure cylinder flexible output cooling system under steam extraction heat supply working condition and operation method thereof | |
| CN214464452U (en) | Hot press device with circumferential steam inlet | |
| CN202228175U (en) | Low-temperature air inlet engine | |
| CN111607687A (en) | Energy-saving device and method for improving steam quality of steelmaking RH refining furnace | |
| CN210374698U (en) | Cooling circulating water system with turbo pump energy recovery device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20210202 Effective date of abandoning: 20240606 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20210202 Effective date of abandoning: 20240606 |