CN112058110A - Double-adjusting ejector - Google Patents
Double-adjusting ejector Download PDFInfo
- Publication number
- CN112058110A CN112058110A CN202011038115.1A CN202011038115A CN112058110A CN 112058110 A CN112058110 A CN 112058110A CN 202011038115 A CN202011038115 A CN 202011038115A CN 112058110 A CN112058110 A CN 112058110A
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- Prior art keywords
- pressure
- core
- regulation
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- crank
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/20—Jet mixers, i.e. mixers using high-speed fluid streams
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/20—Measuring; Control or regulation
- B01F35/21—Measuring
- B01F35/211—Measuring of the operational parameters
- B01F35/2111—Flow rate
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/20—Measuring; Control or regulation
- B01F35/21—Measuring
- B01F35/211—Measuring of the operational parameters
- B01F35/2113—Pressure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/20—Measuring; Control or regulation
- B01F35/21—Measuring
- B01F35/211—Measuring of the operational parameters
- B01F35/2115—Temperature
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Accessories For Mixers (AREA)
Abstract
The invention relates to a double-regulation ejector, which comprises a high-pressure chamber (1), a low-pressure chamber (2) and a mixing chamber (11), wherein the high-pressure chamber (1), the low-pressure chamber (2) and the mixing chamber (11) are coaxially arranged and are communicated with each other; the high-pressure chamber (1) is provided with a first temperature sensor and a first pressure sensor at a high-pressure inlet, and the low-pressure chamber (2) is provided with a second temperature sensor and a second pressure sensor at a low-pressure inlet. The invention has the advantages that: set up first regulation core and second and adjust the core, this first regulation core and second are adjusted the core and all can be adjusted, and then satisfy when the change of load (flow), the removal that the mixing chamber was realized to first regulation core is adjusted the flow, adjusts the flow regulation of conical nozzle department through the second regulation core realization, and realizes the adaptability change to the medium, has guaranteed to draw and has penetrated the effect.
Description
Technical Field
The invention relates to a double-regulation ejector, which is used for mixing media with different pressures to achieve the purpose of increasing the pressure of a low-pressure medium.
Background
The ejector is a device which utilizes the low-pressure medium to be brought into the suction chamber when the high-pressure medium is sprayed out of the nozzle, the low-pressure medium and the suction chamber are mixed in the mixing chamber and then output after being boosted by the pressure-protecting tube, and the ejection ratio, namely the ratio of the flow rate of the low-pressure medium to the flow rate of the high-pressure medium, of the ejector is an important index influencing the economic operation of the ejector. The medium-pressure mixing device is mainly used for mixing two media to obtain a medium with intermediate pressure so as to achieve the purposes of energy conservation and efficiency improvement.
The most advanced ejector structure at present is the patent of the patentee of the invention: joint regulation formula ejector, patent number: ZL201410416461.7, its main characteristic has realized the synchronous regulation of high pressure medium nozzle area and the mixing chamber area of two kinds of media, has solved the injection ability that area ratio changes and leads to when the small load operation and has reduced, does not draw even the injection problem.
In industrial production practice, the operating environment conditions of the ejector are very complex, and besides the change of load (flow rate), the pressure and temperature of the medium also have large change range, for example, in a thermal power plant, the change of power generation amount can cause the steam parameters (pressure and temperature) of different parts of a steam turbine to change greatly. In this case, if the area ratio of the ejector (the ratio of the flow area of the mixing chamber to the flow area of the nozzle) cannot be changed adaptively, the ejection capability is still lowered, ejection is not performed, and the like.
The invention is developed in order to keep the ejector always in the optimal state, namely the optimal area ratio operation under the complex operation working condition.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a double-regulation ejector, and the technical scheme of the invention is as follows:
a double-regulation ejector comprises a high-pressure chamber (1), a low-pressure chamber (2) and a mixing chamber (11), wherein the high-pressure chamber (1), the low-pressure chamber (2) and the mixing chamber (11) are coaxially arranged and are communicated with each other; the device is characterized in that a first temperature sensor and a first pressure sensor are mounted at a high-pressure inlet of the high-pressure chamber (1), a second temperature sensor and a second pressure sensor are mounted at a low-pressure inlet of the low-pressure chamber (2), a movable first adjusting core (4) is mounted in the mixing chamber (11), a conical nozzle (10) is formed at a high-pressure outlet of the high-pressure chamber (1), the conical nozzle (10) extends into the low-pressure chamber (2), and a movable second adjusting core (3) is mounted in the conical nozzle (10); this mixing chamber (11) inlet port with low-pressure chamber (2) intercommunication, outlet port department installs third pressure sensor, second adjust core (3) suit in the inside of first regulation core (4), with first regulation core (4) coaxial arrangement, second adjust core (3) reciprocate between conical nozzle (10) and first regulation core (4), this first temperature sensor, first pressure sensor, second temperature sensor, second pressure sensor and third pressure sensor all insert first regulator (5).
A first crank (9) is arranged outside the first adjusting core (4), one end of the first crank (9) is connected with the first adjusting core (4), the other end of the first crank is in transmission connection with a first actuator (6), the first crank (9) is driven by the first actuator (6), and the first actuator (6) is connected into the first adjuster (5).
A second crank (12) is arranged outside the second adjusting core (3), one end of the second crank (12) is connected with the first adjusting core (3), the other end of the second crank is in transmission connection with the second actuator (7), the second crank (12) is driven by the second actuator (7), and the second actuator (7) is connected into the first adjuster (5).
The control mechanism comprises a first regulator (5) and a second regulator (8), the first actuator (6), the second actuator (7), the first temperature sensor, the first pressure sensor, the second temperature sensor, the second pressure sensor and the third pressure sensor are all connected to the first regulator (5), and the third pressure sensor and the second actuator (7) are also connected to the second regulator (8).
The middle parts of the first adjusting core (4) and the second adjusting core (3) are both arranged in a cylindrical shape, and the two ends form a tip; the first adjusting core (4) is provided with a sliding groove for the second adjusting core (3) to move in a reciprocating way.
The first adjusting process is realized by a first adjusting core (4), a first adjuster (5) and a first actuator (6), and parameters participating in adjusting are all 5 pressure and temperature signals and (6 in total) opening degree signals of the second actuator. The 6 parameters are calculated in the first regulator (5) by special software; the second adjusting process is realized through a second adjusting core (3), a second adjuster (8) and a second actuator (7). Only the third pressure sensor signal controls the flow of the nozzle, a parameter involved in the regulation. The control signal of the first actuator (5) is adapted to meet the requirements of the optimum operating state (area ratio).
The invention has the advantages that: set up first regulation core and second and adjust the core, this first regulation core and second are adjusted the core and all can be adjusted, and then satisfy when the change of load (flow), realize the removal of mixing chamber through first regulation core and adjust the flow, and the second is adjusted the core and is realized the flow control to conical nozzle department, and realizes having guaranteed to draw the penetrating effect to the adaptability change of medium.
Drawings
Fig. 1 is a schematic structural diagram of a main body of a first embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a second embodiment of the present invention.
Detailed Description
The invention will be further described with reference to specific embodiments, and the advantages and features of the invention will become apparent as the description proceeds. These examples are illustrative only and do not limit the scope of the present invention in any way. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention, and that such changes and modifications may be made without departing from the spirit and scope of the invention.
Referring to fig. 1, the invention relates to a double-regulation ejector, which comprises a high-pressure chamber 1, a low-pressure chamber 2 and a mixing chamber 11, wherein the high-pressure chamber 1, the low-pressure chamber 2 and the mixing chamber 11 are coaxially arranged and are communicated with each other; a first temperature sensor and a first pressure sensor are arranged at a high-pressure inlet of the high-pressure chamber 1, a second temperature sensor and a second pressure sensor are arranged at a low-pressure inlet of the low-pressure chamber 2, a movable first adjusting core 4 is arranged in the mixing chamber 11, a conical nozzle 10 is formed at a high-pressure outlet of the high-pressure chamber 1, the conical nozzle 10 extends into the low-pressure chamber 2, and a second adjusting core 3 is movably arranged at the conical nozzle 10; this mixing chamber 11 the inlet port with 2 intercommunications in low-pressure chamber, install third pressure sensor at outlet port department, the second adjust the core 3 and install in the inside of first regulation core 4, with the coaxial setting of first regulation core 4, the second adjust core 3 reciprocate between conical nozzle 10 and first regulation core 4, this first temperature sensor, first pressure sensor, second temperature sensor, second pressure sensor and third pressure sensor all insert first regulator 5.
A first crank 9 is arranged outside the first adjusting core 4, one end of the first crank 9 is connected with the first adjusting core 4, the other end of the first crank 9 is in transmission connection with a first actuator 6, the first crank 9 is driven by the first actuator 6, and the first actuator 6 is connected to the first adjuster 5.
A second crank 12 is arranged outside the second adjusting core 3, one end of the second crank 12 is connected with the second adjusting core 3, the other end of the second crank 12 is in transmission connection with the second actuator 7, the second crank 12 is driven by the second actuator 7, and the second actuator 7 is connected with the first adjuster 5.
The control mechanism comprises a first regulator 5 and a second regulator 8, wherein the first actuator 6, the second actuator 7, the first temperature sensor, the first pressure sensor, the second temperature sensor, the second pressure sensor and the third pressure sensor are all connected to the first regulator 5, and the third pressure sensor and the second actuator 7 are also connected to the second regulator 8.
The middle parts of the first adjusting core 4 and the second adjusting core 3 are both arranged in a cylindrical shape, and the two ends form tip ends; the first adjusting core 4 is provided with a chute for the second adjusting core 3 to reciprocate.
The working principle of the invention is as follows: the arrangement of the first adjusting core realizes the adjustable space of the mixing chamber; the second regulating core can change the area of the conical nozzle to realize flow regulation. The change of the flow area of the mixing chamber meets the requirement of a preset area ratio, and the numerical value of the area is determined by the numerical values of a first preset temperature sensor, a first preset pressure sensor, a second preset temperature sensor, a second preset pressure sensor and a third preset pressure sensor.
The second regulator takes the outlet pressure as a control object to carry out PID regulation, changes the flow area of the conical nozzle and meets the load requirement of a user. The first regulator collects the following signals, including the pressure P of the high pressure inlet0Temperature t0(ii) a Pressure P of the low-pressure inlethTemperature th(ii) a The outlet pressure Pg and the opening m1 of the second actuator are controlled by the first regulator to change the opening m2 of the first actuator to adjust the flow area of the mixing chamber.
The first adjusting core is moved through the second actuator 7, flow adjustment of the conical nozzle is achieved, the second adjusting core is moved through the first actuator 6, adjustment of the flow of the mixing chamber is achieved, adaptability changes of pressure, temperature, flow and the like of a medium are achieved, and an injection effect is guaranteed.
As shown in fig. 2, the difference from fig. 1 is that two sets of ejectors are provided, and the adjusting cores of the two ejectors are subjected to equal thrust of the medium, so that the moments are mutually offset, and only pure thrust is left, which is beneficial to preventing undesirable factors such as abrasion and the like, and increasing safety and reliability.
Claims (5)
1. A double-regulation ejector comprises a high-pressure chamber (1), a low-pressure chamber (2) and a mixing chamber (11), wherein the high-pressure chamber (1), the low-pressure chamber (2) and the mixing chamber (11) are coaxially arranged and are communicated with each other; the device is characterized in that a first temperature sensor and a first pressure sensor are mounted at a high-pressure inlet of the high-pressure chamber (1), a second temperature sensor and a second pressure sensor are mounted at a low-pressure inlet of the low-pressure chamber (2), a movable first adjusting core (4) is mounted in the mixing chamber (11), a conical nozzle (10) is formed at a high-pressure outlet of the high-pressure chamber (1), the conical nozzle (10) extends into the low-pressure chamber (2), and a second adjusting core (3) is movably mounted at the conical nozzle (10); this mixing chamber (11) inlet port with low-pressure chamber (2) intercommunication, outlet port department installs third pressure sensor, the second adjust core (3) install in the inside of first regulation core (4), with first regulation core (4) coaxial arrangement, second adjust core (3) reciprocate between conical nozzle (10) and first regulation core (4), this first temperature sensor, first pressure sensor, second temperature sensor, second pressure sensor and third pressure sensor all insert first regulator (5).
2. The double-regulation ejector according to claim 1, wherein a first crank (9) is arranged outside the first regulation core (4), one end of the first crank (9) is connected with the first regulation core (4), the other end of the first crank is in transmission connection with a first actuator (6), the first crank (9) is driven by the first actuator (6), and the first actuator (6) is connected into the first regulator (5).
3. The double-regulation ejector according to claim 1 or 2, wherein a second crank (12) is arranged outside the second regulation core (3), one end of the second crank (12) is connected with the second regulation core (3), the other end of the second crank is in transmission connection with the second actuator (7), the second crank (12) is driven by the second actuator (7), and the second actuator (7) is connected with the first regulator (5).
4. A double-regulating injector according to claim 3, characterised in that the control means comprise a first regulator (5) and a second regulator (8), the first actuator (6), the second actuator (7), the first temperature sensor, the first pressure sensor, the second temperature sensor, the second pressure sensor and the third pressure sensor being connected to the first regulator (5), the third pressure sensor and the second actuator (7) being connected to the second regulator (8).
5. The double-regulation ejector according to claim 1, wherein the first regulation core (4) and the second regulation core (3) are both cylindrically arranged, and the two ends form a tip; the first adjusting core (4) is provided with a sliding groove for the second adjusting core (3) to move in a reciprocating way.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011038115.1A CN112058110A (en) | 2020-09-28 | 2020-09-28 | Double-adjusting ejector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011038115.1A CN112058110A (en) | 2020-09-28 | 2020-09-28 | Double-adjusting ejector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112058110A true CN112058110A (en) | 2020-12-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011038115.1A Pending CN112058110A (en) | 2020-09-28 | 2020-09-28 | Double-adjusting ejector |
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| Country | Link |
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| CN (1) | CN112058110A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112610540A (en) * | 2020-12-14 | 2021-04-06 | 黄峰 | Power ejector based on pressure regulating valve |
| CN115846074A (en) * | 2022-10-27 | 2023-03-28 | 山东大学 | Adjustable injection device and method |
-
2020
- 2020-09-28 CN CN202011038115.1A patent/CN112058110A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112610540A (en) * | 2020-12-14 | 2021-04-06 | 黄峰 | Power ejector based on pressure regulating valve |
| CN115846074A (en) * | 2022-10-27 | 2023-03-28 | 山东大学 | Adjustable injection device and method |
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