CN114643237B - Gas-liquid mixed recovery type surplus flushing device and method - Google Patents
Gas-liquid mixed recovery type surplus flushing device and method Download PDFInfo
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- CN114643237B CN114643237B CN202210337172.2A CN202210337172A CN114643237B CN 114643237 B CN114643237 B CN 114643237B CN 202210337172 A CN202210337172 A CN 202210337172A CN 114643237 B CN114643237 B CN 114643237B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
- B08B9/0321—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid
- B08B9/0328—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid by purging the pipe with a gas or a mixture of gas and liquid
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
- B08B9/0321—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid
- B08B9/0323—Arrangements specially designed for simultaneous and parallel cleaning of a plurality of conduits
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
- B08B9/0321—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid
- B08B9/0325—Control mechanisms therefor
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Abstract
The invention relates to a gas-liquid mixed recovery type surplus flushing device and a method, wherein the gas-liquid mixed recovery type surplus flushing device comprises a first liquid storage tank, a second liquid storage tank, a gas storage tank, a four-way valve, a first gas branch and a second gas branch, and the gas storage tank is respectively connected with a first gas inlet at the top of the first liquid storage tank and a second gas inlet at the top of the second liquid storage tank through gas pipelines; the first liquid outlet and the first liquid inlet of the first liquid storage tank are connected with the second liquid outlet and the second liquid inlet of the second liquid storage tank through flushing pipelines, a four-way valve is arranged on the flushing pipelines, two valve ports of the four-way valve are connected with the flushing pipelines, the other two valve ports of the four-way valve are connected with product pipelines, and products to be flushed are arranged on the product pipelines; the two ends of the first gas branch are respectively connected with the gas pipeline and the flushing pipeline at the upstream of the four-way valve, and the two ends of the second gas branch are respectively connected with the gas pipeline and the flushing pipeline at the downstream of the four-way valve. The invention can achieve better flushing effect.
Description
Technical Field
The invention relates to the technical field of aerospace, in particular to thermal equipment and fluid equipment, and particularly relates to a gas-liquid mixed recovery type excess flushing device and method.
Background
At present, in the technical fields of aerospace, weapons, thermal engineering and the like, a liquid system composed of liquid working media such as deionized water, glycol, perfluoro triethylamine and the like is often used. The liquid system is often internally integrated with a complex flow passage structure such as a cold plate, a heat exchanger, an elbow, a tee joint and the like. In the production and assembly process, some metal processing scraps, nonmetal scraps and other superfluous materials can be introduced, and the long-term operation can cause pipeline blockage, flow reduction and even flow interruption. Furthermore, the presence of the excess may damage the components of the quick disconnect, filter, pump, etc., causing non-serious damage to the system. At present, in the field, a high-pressure gas blowing mode is generally adopted, but the mode is limited by small gas density and momentum, and actually, the carried-out surplus is limited, and a large part of the surplus still exists. The traditional liquid flushing table is often driven by a pump, and has large volume, large occupied area and extremely inconvenient use, so that a more efficient and convenient superfluous flushing device is needed.
Disclosure of Invention
The invention provides a gas-liquid mixing recovery type superfluous flushing device and a method for solving one or more of the technical problems.
The technical scheme for solving the technical problems is as follows: the gas-liquid mixed recovery type surplus flushing device comprises a first liquid storage tank, a second liquid storage tank, a gas storage tank, a four-way valve, a first gas branch and a second gas branch, wherein the gas storage tank is respectively connected with a first gas inlet at the top of the first liquid storage tank and a second gas inlet at the top of the second liquid storage tank through gas pipelines; the first liquid outlet and the first liquid inlet of the first liquid storage tank are connected with the second liquid outlet and the second liquid inlet of the second liquid storage tank through flushing pipelines, a four-way valve is arranged on the flushing pipelines, two valve ports of the four-way valve are connected with the flushing pipelines, the other two valve ports of the four-way valve are connected with product pipelines, and the product pipelines are provided with products to be flushed; the two ends of the first gas branch are respectively connected with the gas pipeline and the flushing pipeline at the upstream of the four-way valve, and the two ends of the second gas branch are respectively connected with the gas pipeline and the flushing pipeline at the downstream of the four-way valve.
The beneficial effects of the invention are as follows: according to the invention, the four-way valve and the two gas branches are arranged, so that the flushing direction can be changed by switching the four-way valve when the flushing device is used, a better flushing effect is achieved, and the problem of four corners caused by unidirectional flushing is avoided. In addition, the invention can input the gas in the gas storage tank into the flushing pipeline by arranging the two gas branches, so that the gas and the liquid working medium are mixed, the product to be flushed is fluctuated and flushed by using the flowing process of the liquid and the gas two-phase flow, and more surplus substances can be flushed. The integrated four-way valve is used, so that the complexity of the system can be simplified as much as possible, the integration level of the system is improved, the flushing device is more convenient, the requirements on power supply, control and the like are lower, and the system is more suitable for special occasions such as aerospace and the like; the flushing device has extremely severe compatibility requirements on the used liquid working medium, the cost of the liquid working medium used for flushing is very high, the full utilization of the liquid working medium can be realized by the device, the recovery can be carried out, and the cost can be effectively reduced.
On the basis of the technical scheme, the invention can be improved as follows.
Further, a control valve and a flow regulating valve are respectively arranged on the first gas branch and the second gas branch.
The beneficial effects of adopting the further scheme are as follows: the control valve and the flow regulating valve are arranged on the gas branch, so that the flow of the air flow mixed into the liquid working medium can be conveniently regulated and controlled.
Further, a pipeline at the first liquid outlet of the first liquid storage tank and a pipeline at the first liquid inlet are connected with a flushing pipeline through a first three-way valve, and a pipeline at the second liquid outlet of the second liquid storage tank and a pipeline at the second liquid inlet are connected with the flushing pipeline through a second three-way valve.
The beneficial effects of adopting the further scheme are as follows: through setting up the three-way valve, be convenient for switch pipeline intercommunication state.
Further, a first filter is arranged on a pipeline where a first liquid outlet of the first liquid storage tank is located, and a second filter is arranged on a pipeline where a second liquid outlet of the second liquid storage tank is located.
The beneficial effects of adopting the further scheme are as follows: through setting up the filter, can use after filtering liquid working medium, can guarantee that liquid working medium body is clean reliable.
Further, a liquid discharge pipeline is connected to the product pipeline, and a liquid discharge valve is arranged on the liquid discharge pipeline.
The beneficial effects of adopting the further scheme are as follows: by arranging the liquid discharge pipeline and the liquid discharge valve, the liquid working medium in the liquid storage tank is conveniently discharged and recovered.
Further, the top of the first liquid storage tank and the top of the second liquid storage tank are respectively provided with a pressure release valve.
The beneficial effects of adopting the further scheme are as follows: by arranging the pressure relief valve, pressure relief is facilitated.
Further, safety valves are respectively arranged at the top of the first liquid storage tank and the top of the second liquid storage tank.
Further, the first liquid storage tank, the second liquid storage tank, the gas storage tank, the first gas branch, the second gas branch, the product pipeline and the flushing pipeline are all of closed structures.
The beneficial effects of adopting the further scheme are as follows: by adopting a closed structure, the liquid working medium is driven by a gas pressurizing mode and is mixed with the liquid working medium, then the product is washed, and more surplus can be washed by using the stirring frequency of the gas-liquid two-phase flow.
The gas-liquid mixed recovery type surplus flushing method is realized by adopting the gas-liquid mixed recovery type surplus flushing device and comprises the following steps:
the first liquid storage tank is in a forward flushing mode, the air storage tank is communicated with the top of the first liquid storage tank through a gas pipeline, a first liquid outlet at the bottom of the first liquid storage tank is communicated with the inlet end of a product pipeline through a four-way valve, a first gas branch is communicated, and the outlet end of the product pipeline is communicated with the second liquid inlet of a second liquid storage tank through the four-way valve, so that a first forward flushing system is formed; the gas storage tank is used for conveying gas to the top of the first liquid storage tank and the first gas branch, the gas entering the first liquid storage tank drives the liquid working medium to flow, and the liquid working medium and the gas of the first gas branch are mixed and then forward flushed through the first forward flushing system;
the method comprises the steps of switching a four-way valve on the basis of a forward flushing mode of a first liquid storage tank in a first liquid storage tank reverse flushing mode, enabling a reverse access flushing pipeline of a product pipeline to be connected, enabling a first liquid outlet at the bottom of the first liquid storage tank to be communicated with an outlet end of the product pipeline through the four-way valve, enabling an inlet end of the product pipeline to be communicated with a second liquid inlet of a second liquid storage tank through the four-way valve, and forming a first reverse flushing system; and after the liquid working medium is mixed with the gas of the first gas branch, the product to be washed is back washed by a first back washing system.
The beneficial effects of the invention are as follows: according to the flushing method, the four-way valve and the two gas branches are arranged, so that when the flushing method is used, liquid working medium and gas can be mixed, and a product to be flushed is flushed by utilizing the fluctuation frequency of two-phase flow; the four-way valve can be switched to change the flushing direction, so that a better flushing effect is achieved, and the four-corner problem caused by unidirectional flushing is avoided.
Further, the method further comprises the following steps:
the second liquid storage tank is in a forward flushing mode, the air storage tank is communicated with the top of the second liquid storage tank through a gas pipeline, a second liquid outlet at the bottom of the second liquid storage tank is communicated with the inlet end of a product pipeline through a four-way valve, a second gas branch is communicated, and the outlet end of the product pipeline is communicated with the first liquid inlet of the first liquid storage tank through the four-way valve to form a second forward flushing system; the gas storage tank is used for conveying gas to the top of the second liquid storage tank and the second gas branch, the gas entering the second liquid storage tank drives the liquid working medium to flow, and the liquid working medium and the gas of the second gas branch are mixed and then forward flushed through the second forward flushing system;
the second liquid storage tank is in a back flushing mode, the four-way valve is switched on the basis of the forward flushing mode of the second liquid storage tank, so that the back of the product pipeline is connected to the flushing pipeline, a second liquid outlet at the bottom of the second liquid storage tank is communicated with the outlet end of the product pipeline through the four-way valve, and then the inlet end of the product pipeline is communicated with the first liquid inlet of the first liquid storage tank through the four-way valve, so that a second back flushing system is formed; and after the liquid working medium is mixed with the gas of the second gas branch, the product to be washed is back washed by a second back washing system.
The beneficial effects of adopting the further scheme are as follows: the invention can realize forward flushing and backward flushing by switching on and off of each pipeline, can realize switching flushing of two liquid storage tanks, and can achieve better flushing effect.
Drawings
FIG. 1 is a schematic diagram of a connection structure of a gas-liquid mixing recovery type excess flushing device according to the present invention;
FIG. 2 is a schematic diagram of a forward flushing mode of a first fluid reservoir according to the present invention;
FIG. 3 is a schematic diagram of a first tank reverse flushing mode structure according to the present invention;
FIG. 4 is a schematic diagram of a forward flushing mode of a second fluid reservoir according to the present invention;
FIG. 5 is a schematic diagram of a second tank reverse flushing mode structure according to the present invention;
FIG. 6 is a schematic diagram of a first tank drain mode structure according to the present invention;
fig. 7 is a schematic diagram of a drain mode structure of a second liquid storage tank according to the present invention.
In the drawings, the list of components represented by the various numbers is as follows:
1. the first liquid storage tank is provided with a pressure relief interface; 2. a first gas interface; 3. the second liquid storage tank is provided with a pressure relief interface; 4. a second gas interface; 5. a liquid discharge interface; C. a gas storage tank; D. a product to be rinsed; s1, a four-way valve; s2, a liquid discharge valve;
a0, a first liquid storage tank; a1, a first pressure relief valve; a2, a first safety valve; a3, a first control valve I; a4, a second control valve I; a5, a first three-way valve; a6, a first filter; a7, a first flow regulating valve;
b0, a second liquid storage tank; b1, a second pressure relief valve; b2, a second safety valve; b3, a first control valve II; b4, a second control valve II; b5, a second three-way valve; b6, a second filter; b7, a second flow regulating valve.
Detailed Description
The principles and features of the present invention are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the invention and are not to be construed as limiting the scope of the invention.
Example 1
As shown in fig. 1 to 7, the gas-liquid mixing recovery type surplus flushing device of the present embodiment includes a first liquid storage tank A0, a second liquid storage tank B0, a gas storage tank C, a four-way valve S1, a first gas branch and a second gas branch, where the gas storage tank C is connected with a first gas inlet at the top of the first liquid storage tank A0 and a second gas inlet at the top of the second liquid storage tank B0 through gas pipelines respectively; the first liquid outlet and the first liquid inlet of the first liquid storage tank A0 are connected with the second liquid outlet and the second liquid inlet of the second liquid storage tank B0 through flushing pipelines, a four-way valve S1 is arranged on the flushing pipelines, two valve ports of the four-way valve S1 are connected with the flushing pipelines, the other two valve ports of the four-way valve S1 are connected with product pipelines, and a product D to be flushed is arranged on the product pipelines; the two ends of the first gas branch are respectively connected with the gas pipeline and the flushing pipeline at the upstream of the four-way valve S1, and the two ends of the second gas branch are respectively connected with the gas pipeline and the flushing pipeline at the downstream of the four-way valve S1.
As shown in fig. 1 to 7, the first gas branch and the second gas branch in this embodiment are respectively provided with a control valve and a flow rate regulating valve. The first gas branch is provided with a second control valve IA 4 and a first flow regulating valve A7, and the second gas branch is provided with a second control valve IIB 4 and a second flow regulating valve B7. The control valve and the flow regulating valve are arranged on the gas branch, so that the flow of the air flow mixed into the liquid working medium can be conveniently regulated and controlled.
As shown in fig. 1 to 7, the top parts of a first liquid storage tank A0 and a second liquid storage tank B0 in this embodiment are respectively connected with a first air inlet pipeline and a second air inlet pipeline, a first control valve ia 3 is arranged on the first air inlet pipeline, a first control valve iib 3 is arranged on the second air inlet pipeline, the first air inlet pipeline is connected with a gas pipeline through a first gas interface 2, and the second air inlet pipeline is connected with the gas pipeline through a second gas interface 4.
As shown in fig. 1 to 7, the pipeline at which the first liquid outlet of the first liquid storage tank A0 and the pipeline at which the first liquid inlet are located in this embodiment are connected with the flushing pipeline through a first three-way valve A5, and the pipeline at which the second liquid outlet of the second liquid storage tank B0 and the pipeline at which the second liquid inlet are located are connected with the flushing pipeline through a second three-way valve B5. Through setting up the three-way valve, can set up the three-way valve and switch for right angle intercommunication mode or parallel intercommunication mode, be convenient for switch the pipeline communication state.
As shown in fig. 1 to 7, a first filter A6 is disposed on a pipe where a first liquid outlet of the first liquid storage tank A0 is located, and a second filter B6 is disposed on a pipe where a second liquid outlet of the second liquid storage tank B0 is located. Through setting up the filter, can use after filtering liquid working medium, can guarantee that liquid working medium body is clean reliable.
As shown in fig. 1 to 7, the product pipeline of the present embodiment is connected with a liquid discharge pipeline, the liquid discharge pipeline is provided with a liquid discharge valve S2, and the liquid discharge pipeline is provided with a liquid discharge port 5. By arranging the liquid discharge pipeline and the liquid discharge valve, the liquid working medium in the liquid storage tank is conveniently discharged and recovered.
As shown in fig. 1 to 7, the top of the first liquid storage tank A0 and the top of the second liquid storage tank B0 in this embodiment are respectively provided with a pressure release valve. The top of the first liquid storage tank A0 is provided with a first pressure relief valve A1, and a pipeline where the first pressure relief valve A1 is arranged is provided with a first liquid storage tank pressure relief interface 1; the top of second liquid storage pot B0 is equipped with second relief valve B1, be equipped with second liquid storage pot pressure release interface 3 on the pipeline where second relief valve B1 is located, through setting up the relief valve, be convenient for the pressure release.
As shown in fig. 1 to 7, a first safety valve A2 is disposed at the top of the first liquid storage tank A0 in this embodiment, and a second safety valve B2 is mounted at the top of the second liquid storage tank B0.
As shown in fig. 1 to 7, the first liquid storage tank A0, the second liquid storage tank B0, the gas storage tank C, the first gas branch, the second gas branch, the product pipeline and the flushing pipeline in this embodiment are all closed structures. By adopting a closed structure, the liquid working medium is driven by a gas pressurizing mode and mixed with the liquid working medium, then the product is fluctuated and washed, and more surplus can be washed by using the stirring frequency of the gas-liquid two-phase flow.
Inert gas, such as nitrogen, may be used in the gas storage tank of this embodiment.
This embodiment is through setting up cross valve and two gaseous branches, when using, can change the direction of washing through the switching cross valve, reaches better washing effect, avoids appearing the four corners problem that unidirectional flushing appears. In addition, the invention can input the gas in the gas storage tank into the flushing pipeline by arranging the two gas branches, so that the gas and the liquid working medium are mixed, the product to be flushed is fluctuated and flushed by using the flowing process of the liquid and the gas two-phase flow, and more surplus substances can be flushed. The integrated four-way valve is used in the embodiment, so that the complexity of the system can be simplified as much as possible, the integration level of the system is improved, the flushing device is more convenient, the requirements on power supply, control and the like are lower, and the system is more suitable for special occasions such as aerospace and the like; the flushing device has extremely severe compatibility requirements on the used liquid working medium, the cost of the liquid working medium used for flushing is very high, the full utilization of the liquid working medium can be realized through the device, the recovery can be carried out, and the cost can be effectively reduced.
Example 2
As shown in fig. 1 to 7, the method for flushing the gas-liquid mixed recovery type surplus material according to the present embodiment is implemented by using the gas-liquid mixed recovery type surplus material flushing device, and includes:
the method comprises the steps of in a forward flushing mode of a first liquid storage tank A0, connecting a gas storage tank C with the top of the first liquid storage tank A0 through a gas pipeline, connecting a first liquid outlet at the bottom of the first liquid storage tank A0 with the inlet end of a product pipeline through a four-way valve S1, connecting a first gas branch, and connecting the outlet end of the product pipeline with the second liquid inlet of a second liquid storage tank B0 through the four-way valve S1 to form a first forward flushing system; the gas storage tank C is used for conveying gas to the top of the first liquid storage tank A0 and the first gas branch, the gas entering the first liquid storage tank A0 drives liquid working medium to flow, and the liquid working medium is mixed with the gas of the first gas branch and then subjected to forward flushing on a product D to be flushed through the first forward flushing system;
specifically, as shown in fig. 2, a first control valve ia 3 on a first air inlet pipeline at the top of a first liquid storage tank A0 is opened, and a second pressure release valve B1 of a second liquid storage tank B0 is opened at the same time, so that a gas storage tank C is communicated with the top of the first liquid storage tank A0, a first three-way valve A5 is switched to a parallel communication mode, a first liquid outlet at the bottom of the first liquid storage tank A0 is communicated with a four-way valve S1 through a first filter A6, a second three-way valve B5 is switched to a right-angle communication mode, and a second liquid inlet on the side wall of the second liquid storage tank B0 is communicated with the four-way valve; the second control valve ia 4 and the first flow regulating valve A7 on the first gas branch are opened. Under the drive of gas pressure in the gas storage tank C, liquid working medium in the first liquid storage tank A0 flows out through the first filter A6 and the first three-way valve A5 and is mixed with gas of the first gas branch to form gas-liquid two-phase flow, the gas-liquid two-phase flow positively enters the product D to be washed from the inlet end of the product pipeline through the four-way valve S1, excessive substances in the product D to be washed are taken away through fluctuation washing of the gas-liquid two-phase flow, and then the residual substances enter the second liquid storage tank B0 through the other way of the four-way valve S1 and the second three-way valve B5. In the flushing process, the opening of a first flow regulating valve A7 in a first gas branch at the side of the first liquid storage tank A0 can be regulated, and the flow of mixed gas is controlled to control the frequency of gas-liquid two-phase flow fluctuation.
The method comprises the steps of switching a four-way valve S1 on the basis of a first liquid storage tank A0 forward flushing mode in a first liquid storage tank A0 reverse flushing mode, enabling a reverse access flushing pipeline of a product pipeline to be connected, enabling a first liquid outlet at the bottom of the first liquid storage tank A0 to be communicated with an outlet end of the product pipeline through the four-way valve S1, enabling an inlet end of the product pipeline to be communicated with a second liquid inlet of a second liquid storage tank B0 through the four-way valve S1, and forming a first reverse flushing system; and after the liquid working medium is mixed with the gas of the first gas branch, carrying out back flushing on the product D to be flushed through a first back flushing system.
Specifically, as shown in fig. 3, a first control valve ia 3 on a first air inlet pipeline at the top of a first liquid storage tank A0 is opened, and a second pressure release valve B1 of a second liquid storage tank B0 is opened at the same time, so that a gas storage tank C is communicated with the top of the first liquid storage tank A0, a first three-way valve A5 is switched to a parallel communication mode, a first liquid outlet at the bottom of the first liquid storage tank A0 is communicated with a four-way valve S1 through a first filter A6, a second three-way valve B5 is switched to a right-angle communication mode, and a second liquid inlet on the side wall of the second liquid storage tank B0 is communicated with the four-way valve; the second control valve ia 4 and the first flow regulating valve A7 on the first gas branch are opened. Under the drive of gas pressure in the gas storage tank C, liquid working medium in the first liquid storage tank A0 flows out through the first filter A6 and the first three-way valve A5 and is mixed with gas of the first gas branch to form gas-liquid two-phase flow, the gas-liquid two-phase flow reversely enters the product D to be washed from the outlet end of the product pipeline through the four-way valve S1, the surplus in the product D to be washed is taken away through fluctuation washing of the gas-liquid two-phase flow, and then the surplus enters the second liquid storage tank B0 through the other way of the four-way valve S1 and the second three-way valve B5. In the flushing process, the opening of a first flow regulating valve A7 in a first gas branch at the side of the first liquid storage tank A0 can be regulated, and the flow of mixed gas is controlled to control the frequency of gas-liquid two-phase flow fluctuation.
The second liquid storage tank B0 is in a forward flushing mode, the air storage tank is communicated with the top of the second liquid storage tank B0 through a gas pipeline, a second liquid outlet at the bottom of the second liquid storage tank B0 is communicated with the inlet end of a product pipeline through a four-way valve S1, a second gas branch is communicated, and the outlet end of the product pipeline is communicated with the first liquid inlet of the first liquid storage tank A0 through the four-way valve S1 to form a second forward flushing system; the gas storage tank C is used for conveying gas to the top of the second liquid storage tank B0 and the second gas branch, the gas entering the second liquid storage tank B0 drives the liquid working medium to flow, and the liquid working medium is mixed with the gas of the second gas branch and then subjected to forward flushing on the product D to be flushed through the second forward flushing system;
specifically, as shown in fig. 4, a first control valve ii B3 on a second air inlet pipe at the top of the second liquid storage tank B0 is opened, and a first pressure release valve A1 of the first liquid storage tank A0 is opened at the same time, so that the air storage tank C is connected with the top of the second liquid storage tank B0, the second three-way valve B5 is switched to a parallel communication mode, a second liquid outlet at the bottom of the second liquid storage tank B0 is connected with the four-way valve S1 through a second filter B6, the first three-way valve A5 is switched to a right-angle communication mode, and a first liquid inlet on the side wall of the first liquid storage tank A0 is connected with the four-way valve; the second control valve IIB 4 and the second flow regulating valve B7 on the second gas branch are opened. Under the drive of gas pressure in the gas storage tank C, liquid working medium in the second liquid storage tank B0 flows out through the second filter B6 and the second three-way valve B5 and is mixed with gas of the second gas branch to form gas-liquid two-phase flow, the gas-liquid two-phase flow positively enters the product D to be washed from the inlet end of the product pipeline through the four-way valve S1, excessive substances in the product D to be washed are taken away through fluctuation washing of the gas-liquid two-phase flow, and then the residual substances enter the first liquid storage tank A0 through the other path of the four-way valve S1 and the first three-way valve A5. In the flushing process, the opening of a second flow regulating valve B7 in a second gas branch at the side of the second liquid storage tank B0 can be regulated, and the flow of mixed gas is controlled to control the frequency of gas-liquid two-phase flow fluctuation.
The second liquid storage tank B0 back flushing mode is that the four-way valve S1 is switched on the basis of the second liquid storage tank B0 forward flushing mode, so that a product pipeline is reversely connected into a flushing pipeline, a second liquid outlet at the bottom of the second liquid storage tank B0 is communicated with an outlet end of the product pipeline through the four-way valve S1, and then an inlet end of the product pipeline is communicated with a first liquid inlet of the first liquid storage tank A0 through the four-way valve S1, so that a second back flushing system is formed; and after the liquid working medium is mixed with the gas of the second gas branch, the product D to be washed is back washed by a second back washing system.
Specifically, as shown in fig. 5, a first control valve ii B3 on a second air inlet pipeline at the top of a second liquid storage tank B0 is opened, and a first pressure release valve A1 of the first liquid storage tank A0 is opened at the same time, so that a gas storage tank C is communicated with the top of the second liquid storage tank B0, a second three-way valve B5 is switched to a parallel communication mode, a second liquid outlet at the bottom of the second liquid storage tank B0 is communicated with a four-way valve S1 through a second filter B6, the first three-way valve A5 is switched to a right-angle communication mode, and a first liquid inlet on the side wall of the first liquid storage tank A0 is communicated with the four-way valve; the second control valve IIB 4 and the second flow regulating valve B7 on the second gas branch are opened. Under the drive of gas pressure in the gas storage tank C, the liquid working medium in the second liquid storage tank B0 flows out through the second filter B6 and the second three-way valve B5 and is mixed with the gas of the second gas branch to form a gas-liquid two-phase flow, the gas-liquid two-phase flow reversely enters the product D to be washed from the outlet end of the product pipeline through the four-way valve S1, the surplus in the product D to be washed is taken away through the fluctuation washing of the gas-liquid two-phase flow, and then the surplus enters the first liquid storage tank A0 through the other way of the four-way valve S1 and the first three-way valve A5. In the flushing process, the opening of a second flow regulating valve B7 in a second gas branch at the side of the second liquid storage tank B0 can be regulated, and the flow of mixed gas is controlled to control the frequency of gas-liquid two-phase flow fluctuation.
The embodiment can circularly perform the two-phase flow flushing operation of the cycle of the forward direction of the first liquid storage tank A0, the reverse direction of the second liquid storage tank B0 and the forward direction of the second liquid storage tank B0 for a plurality of times, and after a plurality of cycles, the flushing is stopped.
As shown in fig. 6, when the first liquid storage tank A0 of the present embodiment discharges liquid, the first control valve ia 3 on the first air inlet pipe at the top of the first liquid storage tank A0 is opened, the air storage tank C is connected to the top of the first liquid storage tank A0, the first three-way valve A5 is switched to the parallel communication mode, the first liquid outlet at the bottom of the first liquid storage tank A0 is connected to the four-way valve S1 through the first filter A6, and the second three-way valve B5 is closed. Under the drive of gas pressure in the gas storage tank C, liquid working medium in the first liquid storage tank A0 flows out through the first filter A6 and the first three-way valve A5, the liquid discharge valve S2 is opened, one passage of the four-way valve S1 is closed, the liquid working medium reversely enters the product D to be washed from the outlet end of the product pipeline through the other passage of the four-way valve S1, and then the liquid working medium is discharged through the liquid discharge pipeline.
As shown in fig. 7, when the second liquid storage tank B0 of the present embodiment discharges liquid, the first control valve iib 3 on the second air inlet pipe at the top of the second liquid storage tank B0 is opened, the air storage tank C is connected to the top of the second liquid storage tank B0, the second three-way valve B5 is switched to the parallel communication mode, the second liquid outlet at the bottom of the second liquid storage tank B0 is connected to the four-way valve S1 through the second filter B6, and the first three-way valve A5 is closed. Under the drive of gas pressure in the gas storage tank C, liquid working medium in the second liquid storage tank B0 flows out through the second filter B6 and the second three-way valve B5, the liquid discharge valve S2 is opened, one passage of the four-way valve S1 is closed, the liquid working medium reversely enters the product D to be washed from the outlet end of the product pipeline through the other passage of the four-way valve S1, and then the liquid working medium is discharged through the liquid discharge pipeline.
According to the flushing method, the four-way valve and the two gas branches are arranged, so that when the flushing method is used, liquid working media and gas can be mixed, and a product to be flushed is flushed by utilizing the fluctuation frequency of two-phase flow; the four-way valve can be switched to change the flushing direction, so that a better flushing effect is achieved, and the four-corner problem caused by unidirectional flushing is avoided. The on-off that this embodiment can be through switching each pipeline can realize forward flushing and back flushing, can also realize the switching flushing of two liquid storage tanks, can reach better washing effect.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (7)
1. The gas-liquid mixed recovery type excess flushing method is characterized by being realized by adopting a gas-liquid mixed recovery type excess flushing device; the gas-liquid mixing recovery type surplus flushing device comprises a first liquid storage tank, a second liquid storage tank, a gas storage tank, a four-way valve, a first gas branch and a second gas branch, wherein the gas storage tank is respectively connected with a first gas inlet at the top of the first liquid storage tank and a second gas inlet at the top of the second liquid storage tank through gas pipelines; the first liquid outlet and the first liquid inlet of the first liquid storage tank are connected with the second liquid outlet and the second liquid inlet of the second liquid storage tank through flushing pipelines, a four-way valve is arranged on the flushing pipelines, two valve ports of the four-way valve are connected with the flushing pipelines, the other two valve ports of the four-way valve are connected with product pipelines, and the product pipelines are provided with products to be flushed; the two ends of the first gas branch are respectively connected with the gas pipeline and the flushing pipeline at the upstream of the four-way valve, and the two ends of the second gas branch are respectively connected with the gas pipeline and the flushing pipeline at the downstream of the four-way valve; the first gas branch and the second gas branch are respectively provided with a control valve and a flow regulating valve;
the gas-liquid mixing recovery type superfluous material flushing method comprises the following steps:
the first liquid storage tank is in a forward flushing mode, the air storage tank is communicated with the top of the first liquid storage tank through a gas pipeline, a first liquid outlet at the bottom of the first liquid storage tank is communicated with the inlet end of a product pipeline through a four-way valve, a first gas branch is communicated, and the outlet end of the product pipeline is communicated with the second liquid inlet of a second liquid storage tank through the four-way valve, so that a first forward flushing system is formed; the gas storage tank is used for conveying gas to the top of the first liquid storage tank and the first gas branch, the gas entering the first liquid storage tank drives the liquid working medium to flow, and the liquid working medium and the gas of the first gas branch are mixed and then forward flushed through the first forward flushing system;
the method comprises the steps of switching a four-way valve on the basis of a forward flushing mode of a first liquid storage tank in a first liquid storage tank reverse flushing mode, enabling a reverse access flushing pipeline of a product pipeline to be connected, enabling a first liquid outlet at the bottom of the first liquid storage tank to be communicated with an outlet end of the product pipeline through the four-way valve, enabling an inlet end of the product pipeline to be communicated with a second liquid inlet of a second liquid storage tank through the four-way valve, and forming a first reverse flushing system; after the liquid working medium is mixed with the gas of the first gas branch, the product to be washed is back washed by a first back washing system;
the gas-liquid mixed recovery type superfluous flushing method further comprises the following steps:
the second liquid storage tank is in a forward flushing mode, the air storage tank is communicated with the top of the second liquid storage tank through a gas pipeline, a second liquid outlet at the bottom of the second liquid storage tank is communicated with the inlet end of a product pipeline through a four-way valve, a second gas branch is communicated, and the outlet end of the product pipeline is communicated with the first liquid inlet of the first liquid storage tank through the four-way valve to form a second forward flushing system; the gas storage tank is used for conveying gas to the top of the second liquid storage tank and the second gas branch, the gas entering the second liquid storage tank drives the liquid working medium to flow, and the liquid working medium and the gas of the second gas branch are mixed and then forward flushed through the second forward flushing system;
the second liquid storage tank is in a back flushing mode, the four-way valve is switched on the basis of the forward flushing mode of the second liquid storage tank, so that the back of the product pipeline is connected to the flushing pipeline, a second liquid outlet at the bottom of the second liquid storage tank is communicated with the outlet end of the product pipeline through the four-way valve, and then the inlet end of the product pipeline is communicated with the first liquid inlet of the first liquid storage tank through the four-way valve, so that a second back flushing system is formed; after the liquid working medium is mixed with the gas of the second gas branch, the product to be washed is back washed by a second back washing system; the product to be washed is a liquid system integrated with a heat exchanger in the technical field of aerospace.
2. The gas-liquid mixing recovery type excess flushing method according to claim 1, wherein a pipeline where a first liquid outlet of the first liquid storage tank is located and a pipeline where a first liquid inlet is located are connected with a flushing pipeline through a first three-way valve, and a pipeline where a second liquid outlet of the second liquid storage tank is located and a pipeline where a second liquid inlet is located are connected with the flushing pipeline through a second three-way valve.
3. The method for flushing the gas-liquid mixed recovery type surplus substances according to claim 1, wherein a first filter is arranged on a pipeline where a first liquid outlet of the first liquid storage tank is located, and a second filter is arranged on a pipeline where a second liquid outlet of the second liquid storage tank is located.
4. The gas-liquid mixing recovery type excess flushing method according to claim 1, wherein a liquid discharge pipeline is connected to the product pipeline, and a liquid discharge valve is arranged on the liquid discharge pipeline.
5. The method for flushing the gas-liquid mixed recovery type surplus substances according to claim 1, wherein the top of the first liquid storage tank and the top of the second liquid storage tank are respectively provided with a pressure release valve.
6. The gas-liquid mixing recovery type excess flushing method according to claim 1, wherein safety valves are respectively installed at the top of the first liquid storage tank and the top of the second liquid storage tank.
7. The method for flushing the surplus substances by mixing and recycling gas and liquid according to claim 1, wherein the first liquid storage tank, the second liquid storage tank, the gas storage tank, the first gas branch, the second gas branch, the product pipeline and the flushing pipeline are all of closed structures.
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