CN210118293U - Adjustable ejector for medium-high pressure industrial steam supply - Google Patents
Adjustable ejector for medium-high pressure industrial steam supply Download PDFInfo
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- CN210118293U CN210118293U CN201920681920.2U CN201920681920U CN210118293U CN 210118293 U CN210118293 U CN 210118293U CN 201920681920 U CN201920681920 U CN 201920681920U CN 210118293 U CN210118293 U CN 210118293U
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Abstract
The utility model provides a well high pressure industry supplies vapour to use adjustable ejector, the ejector is including receiving section, mixing section and diffusion section in proper order, and power steam entry has been seted up to the receipt section upside, and the downside of receiving the section has seted up low pressure steam entry, wear to be equipped with the adjusting gate pole in the ejector, the front end of receiving the section is provided with the regulation executor, the one end of adjusting gate pole set up in the regulation executor, adjust the executor with be provided with seal assembly between the receipt section, seal assembly with be provided with the leak vapour adjusting part between the mixing section for draw forth the leak vapour to mixing the section. The beneficial effects of the utility model are embodied in: the sealed pressure difference is reduced through the steam leakage leading-out pipeline, the steam leakage phenomenon of the high-pressure adjusting door rod is fundamentally solved, and meanwhile, the service life of the filler is prolonged.
Description
Technical Field
The utility model belongs to the technical field of heat supply power generation, concretely relates to middle and high pressure industry supplies vapour to use adjustable ejector and adjusting method thereof.
Background
With the increasing attention of the nation on energy conservation and environmental protection, more and more thermal power generation enterprises are transformed by cogeneration, and cogeneration is one of important means for saving energy and improving the economy of a unit and is also an important measure for promoting the sustainable development of social economy. The cogeneration of heat and power in southern areas without central heating is mainly carried out by carrying out industrial steam supply reformation.
The industrial steam supply reconstruction of the original pure condensation thermal power unit can roughly adopt the following three modes:
1) the through-flow part of the machine set is reformed and is additionally provided with a rotary clapboard to be changed into an adjustable steam extraction turbine, the reforming method has strong applicability, all the machine sets can be reformed by the method, but the reforming cost is high, and the rotors and the cylinders of the intermediate pressure cylinder are required to be remanufactured. 2) The method is simple, but low in heat efficiency, because the temperature and pressure reduction causes the loss of useful energy of steam, the efficiency is low, but the modification cost is low. 3) The steam ejector is utilized to pump the steam with the pressure higher than the heat supply pressure and the steam with the pressure lower than the steam supply pressure, and the steam is mixed and supplied to the industry, but the method has poor adaptability to the fluctuation of the unit load and the heat load of the industry steam supply. Especially for high and medium pressure industrial steam supply, an adjustable ejector is adopted, but the existing ejector adopts a single-stage sealing form of a common packing structure, the low pressure sealing effect can be achieved, and when the power steam pressure is high, the sealing effect is general; meanwhile, the single-stage sealing adopts multi-layer sealing in different forms for high-pressure sealing, the packing needs to be continuously replaced, the manufacturing cost of the sealing structure is high, and finally the phenomenon of steam leakage cannot be avoided.
SUMMERY OF THE UTILITY MODEL
In order to solve the defects of the prior art, the utility model provides an adjustable ejector for medium and high pressure industrial steam supply and an adjusting method thereof.
The purpose of the utility model is realized through the following technical scheme:
well high pressure industry supplies vapour to use adjustable ejector includes receiving section, mixing section and diffusion section in proper order, the power steam entry has been seted up to the receiving section upside, the downside of receiving the section is seted up and is entered with low pressure steam, wear to be equipped with the adjusting gate pole in the ejector, the front end of receiving the section is provided with the regulation executor, the one end of adjusting gate pole set up in the regulation executor, adjust the executor with be provided with seal assembly between the receiving section, seal assembly with be provided with the steam leakage regulating assembly between the mixing section for draw forth the steam leakage to the mixing section.
Preferably, the sealing assembly comprises a sleeve wrapped outside the adjusting door rod, packing is arranged on two sides of the sleeve, a gland is arranged at one end of the packing, a bushing is arranged at the other end of the packing, the gland is arranged on the adjusting actuator side, the bushing is arranged on the ejector receiving section side, sealing rings are arranged on the packing and the sleeve, and one end of the steam leakage adjusting assembly is arranged between the sleeve and the sealing rings.
Preferably, a sealing gasket is arranged between the gland and the packing.
Preferably, at least one steam leakage adjusting assembly is arranged.
Preferably, the steam leakage regulating assembly is a steam leakage leading-out pipeline, and a check valve is arranged on the steam leakage leading-out pipeline.
Preferably, one end of the steam leakage leading-out pipeline is arranged in a sleeve outside the adjusting door rod, and the other end of the steam leakage leading-out pipeline is arranged in the mixing section of the ejector.
Preferably, the motive steam inlet is parallel to the axis of the low pressure steam inlet.
Preferably, the number of the steam leakage leading-out pipelines is two, and the two steam leakage leading-out pipelines are arranged along the circumference of the sleeve in a divergent mode.
Preferably, the steam adjusting method of the adjustable ejector for medium-high pressure industrial steam supply comprises the following steps:
s1, high-pressure steam enters the ejector from a power steam inlet of the ejector;
s2, the adjustable actuator adjusts and controls the adjusting door rod, and the ejector enables low-pressure steam at a low-pressure steam inlet to pass through high-pressure steam;
s3, leading high-pressure steam to the mixing section through a leakage steam leading-out pipeline to reduce sealed pressure difference, and preventing the reverse channeling of low-pressure steam through a check valve on the leakage steam leading-out pipeline;
and S4, mixing the high-pressure steam and the low-pressure steam in a mixing section, and discharging the target steam through a diffusion section.
The beneficial effects of the utility model are embodied in: the sealed pressure difference is reduced through the steam leakage leading-out pipeline, the steam leakage phenomenon of the high-pressure adjusting door rod is fundamentally solved, and meanwhile, the service life of the filler is prolonged.
Drawings
FIG. 1: the utility model discloses an ejector structure schematic diagram.
FIG. 2: the utility model discloses a part of the enlarged schematic diagram of figure 1.
Detailed Description
The utility model discloses a well high pressure industry supplies vapour to use adjustable ejector to as shown in figure 1 to steam circulation direction includes receiving section, mixing section 7 and diffusion section in proper order, power steam entry 1 has been seted up to the receiving section upside for let in high-pressure steam. The lower side of the receiving section is provided with a low-pressure steam inlet 8 for sucking low-pressure steam. The power steam inlet 1 is parallel to the axis of the low-pressure steam inlet 8.
The front end of the receiving section is provided with an adjusting actuator 2, an adjusting door rod 4 penetrates through the ejector, one end of the adjusting door rod 4 is arranged in the adjusting actuator 2, and in order to avoid high-pressure steam leakage in the atmospheric environment, a sealing assembly is arranged between the adjusting actuator 2 and the receiving section. At least one steam leakage adjusting component is arranged between the sealing component and the mixing section 7 and is used for leading out steam leakage to the mixing section. The utility model discloses in the pipeline 5 is drawn forth for the steam leakage to the steam leakage regulating assembly, in order to prevent that the steam of low pressure steam entry 8 from scurrying, be provided with check valve 6 on the pipeline is drawn forth to the steam leakage.
Specifically, the sealing assembly comprises a sleeve 51 coated outside the adjusting door rod 4, and fillers 53 are arranged on two sides of the sleeve 51. The packing 53 is provided with a gland 55 near one end of the adjustment actuator 2 and a bushing 56 near the other end of the ejector. The packing 53 and sleeve member adjacent the eductor end is provided with a sealing ring 52. A sealing gasket 54 is provided between the gland 55 and the packing. One end of the steam leakage leading-out pipeline 5 is arranged in the sleeve 51 outside the adjusting door rod 4, and the other end of the steam leakage leading-out pipeline is arranged in the mixing section of the ejector. The sealing performance can meet the requirement under the condition that the steam leakage amount is enough. One end of the steam leakage leading-out pipeline 5 is arranged between the sleeve 51 and the sealing ring 52. The steam leakage leading-out pipes 5 may be provided in plural as required, and when two or more than two steam leakage leading-out pipes 5 are provided, they are arranged in a divergent manner along the circumference of the sleeve 51. Of course, the leading-out section may be a single section, and the leading-in section may be a multi-section.
The utility model also discloses a steam control method of the adjustable ejector for medium and high pressure industry steam supply, including following step:
s1, high-pressure steam enters the ejector from a power steam inlet 1 of the ejector;
s2, the adjustable actuator 2 adjusts and controls the adjusting door rod 4, and the ejector enables low-pressure steam at the low-pressure steam inlet 8 to pass through high-pressure steam;
s3, leading high-pressure steam to a mixing section through a leakage steam leading-out pipeline 5 to reduce sealed pressure difference, and preventing the reverse channeling of low-pressure steam through a check valve 6 on the leakage steam leading-out pipeline;
and S4, mixing the high-pressure steam and the low-pressure steam in the mixing section 7, and discharging the target steam through the diffuser section through the ejector outlet 9.
Meanwhile, the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; 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 present invention in its corresponding aspects.
Claims (8)
1. Adjustable ejector for medium and high pressure industrial steam supply is characterized in that: include receiving section, mixing section and diffusion section in proper order, the power steam entry has been seted up to the receiving section upside, the low pressure steam entry has been seted up to the downside of receiving the section, wear to be equipped with the adjusting gate pole in the ejector, the front end of receiving the section is provided with adjusts the executor, the one end of adjusting gate pole set up in adjust in the executor, adjust the executor with be provided with seal assembly between the receiving section, seal assembly with be provided with the steam leakage regulating assembly between the mixing section for draw forth the steam leakage to the mixing section.
2. The adjustable ejector for medium and high pressure industrial steam supply according to claim 1, characterized in that: the sealing assembly comprises a sleeve wrapped outside the adjusting door rod, packing is arranged on two sides of the sleeve, a gland is arranged at one end of the packing, a bushing is arranged at the other end of the packing, the gland is arranged on the side of the adjusting actuator, the bushing is arranged on the side of the ejector receiving section, sealing rings are arranged on the packing and the sleeve, and one end of the steam leakage adjusting assembly is arranged between the sleeve and the sealing rings.
3. The adjustable ejector for medium and high pressure industrial steam supply according to claim 2, characterized in that: and a sealing gasket is arranged between the gland and the packing.
4. The adjustable ejector for medium and high pressure industrial steam supply according to claim 1, characterized in that: at least one steam leakage adjusting component is arranged.
5. The adjustable ejector for medium and high pressure industrial steam supply according to claim 1, characterized in that: the steam leakage adjusting assembly is a steam leakage leading-out pipeline, and a check valve is arranged on the steam leakage leading-out pipeline.
6. The adjustable ejector for medium and high pressure industrial steam supply according to claim 5, characterized in that: one end of the steam leakage leading-out pipeline is arranged in the sleeve outside the adjusting door rod, and the other end of the steam leakage leading-out pipeline is arranged in the mixing section of the ejector.
7. The adjustable ejector for medium and high pressure industrial steam supply according to claim 1, characterized in that: the motive steam inlet is parallel to the axis of the low pressure steam inlet.
8. The adjustable ejector for medium and high pressure industrial steam supply according to claim 5, characterized in that: two steam leakage leading-out pipelines are arranged and are arranged in a divergence shape along the circumference of the sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920681920.2U CN210118293U (en) | 2019-05-14 | 2019-05-14 | Adjustable ejector for medium-high pressure industrial steam supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920681920.2U CN210118293U (en) | 2019-05-14 | 2019-05-14 | Adjustable ejector for medium-high pressure industrial steam supply |
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| Publication Number | Publication Date |
|---|---|
| CN210118293U true CN210118293U (en) | 2020-02-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920681920.2U Active CN210118293U (en) | 2019-05-14 | 2019-05-14 | Adjustable ejector for medium-high pressure industrial steam supply |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110131220A (en) * | 2019-05-14 | 2019-08-16 | 上海宁硕节能科技有限公司 | Mesohigh industry steam supply adjustable ejector and its adjusting method |
| CN115199595A (en) * | 2022-07-25 | 2022-10-18 | 中国华能集团清洁能源技术研究院有限公司 | Steam pressure matcher |
-
2019
- 2019-05-14 CN CN201920681920.2U patent/CN210118293U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110131220A (en) * | 2019-05-14 | 2019-08-16 | 上海宁硕节能科技有限公司 | Mesohigh industry steam supply adjustable ejector and its adjusting method |
| CN115199595A (en) * | 2022-07-25 | 2022-10-18 | 中国华能集团清洁能源技术研究院有限公司 | Steam pressure matcher |
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