CN212440814U

CN212440814U - Double-adjusting ejector

Info

Publication number: CN212440814U
Application number: CN202022164184.9U
Authority: CN
Inventors: 朱建文
Original assignee: QINGDAO GAOYUAN THERMAL ENERGY POWER EQUIPMENT CO Ltd
Current assignee: QINGDAO GAOYUAN THERMAL ENERGY POWER EQUIPMENT CO Ltd
Priority date: 2020-09-28
Filing date: 2020-09-28
Publication date: 2021-02-02
Anticipated expiration: 2030-09-28

Abstract

The utility model 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 mutually communicated; 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 utility model 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

Double-adjusting ejector

Technical Field

The utility model relates to a two regulation ejectors for mix the medium with different pressure and reach the purpose that promotes low pressure medium pressure.

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 utility model discloses have researched and developed in order to make the ejector remain the optimum condition throughout under complicated operating condition, the optimum area ratio operation.

Disclosure of Invention

For overcoming the defects of the prior art, the utility model provides a double-adjusting ejector, the technical scheme of the utility model is that:

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; a first temperature sensor and a first pressure sensor are installed at a high-pressure inlet of the high-pressure chamber (1), a second temperature sensor and a second pressure sensor are installed at a low-pressure inlet of the low-pressure chamber (2), a movable first adjusting core (4) is installed 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 to the inside of the low-pressure chamber (2), and a second adjusting core (3) is movably installed 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).

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 a 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 pressure sensor is characterized by further comprising 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 connected to the first regulator (5), and the third pressure sensor and the second actuator (7) are 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 utility model 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, the advantages and features of the invention will become more apparent as the description proceeds. These examples are merely illustrative and do not limit the scope of the 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 are intended to be included within the scope of the invention.

Referring to fig. 1, the utility model 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 mutually communicated; 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 a 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 hydraulic control system further comprises 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 tip ends; the first adjusting core 4 is provided with a chute for the second adjusting core 3 to reciprocate.

The utility model discloses a theory of operation is: 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 inlet_hTemperature t_h(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

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 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 a second actuator (7), the second crank (12) is driven by the second actuator (7), and the second actuator (7) is connected into the first regulator (5).

4. The dual-regulation ejector according to claim 3, further comprising 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).

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.