WO2023155275A1 - Système de régulation de pression et procédé de commande de système de régulation de pression - Google Patents

Système de régulation de pression et procédé de commande de système de régulation de pression Download PDF

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Publication number
WO2023155275A1
WO2023155275A1 PCT/CN2022/084145 CN2022084145W WO2023155275A1 WO 2023155275 A1 WO2023155275 A1 WO 2023155275A1 CN 2022084145 W CN2022084145 W CN 2022084145W WO 2023155275 A1 WO2023155275 A1 WO 2023155275A1
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WIPO (PCT)
Prior art keywords
pressure
pressure regulating
valve
pipeline
fluid
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PCT/CN2022/084145
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English (en)
Chinese (zh)
Inventor
王文书
邹江磊
吴琼
查万春
Original Assignee
烟台杰瑞石油装备技术有限公司
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Publication of WO2023155275A1 publication Critical patent/WO2023155275A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D3/00—Arrangements for supervising or controlling working operations
    • F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L41/00—Branching pipes; Joining pipes to walls
    • F16L41/02—Branch units, e.g. made in one piece, welded, riveted
    • F16L41/03—Branch units, e.g. made in one piece, welded, riveted comprising junction pieces for four or more pipe members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L41/00—Branching pipes; Joining pipes to walls
    • F16L41/08—Joining pipes to walls or pipes, the joined pipe axis being perpendicular to the plane of the wall or to the axis of another pipe
    • F16L41/16—Joining pipes to walls or pipes, the joined pipe axis being perpendicular to the plane of the wall or to the axis of another pipe the branch pipe comprising fluid cut-off means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D5/00—Protection or supervision of installations

Definitions

  • the present application relates to the technical field of fluid pressure regulation, in particular, to a pressure regulation system and a control method of the pressure regulation system.
  • valve parts In some pressure regulating systems in the prior art, the valve parts cannot adapt to the short time and large pressure difference impact caused by relying on manual control, which is affected by different operating experience of operators, high error probability, long cut-in time, valve parts It is easy to be damaged by a large impact, which will affect the service life of the voltage regulator.
  • the main purpose of the present application is to provide a pressure regulation system and a control method of the pressure regulation system, so as to solve the problem of low service life of the pressure regulator in the pressure regulation system in the prior art.
  • a pressure regulation system including a fluid inlet and a fluid outlet. Connected; the automatic valve is arranged on the inlet end of the pressure regulating circuit and communicated with the pressure regulating circuit; the first cut-off valve is arranged on the pressure regulating circuit and communicated with the pressure regulating circuit, and the inlet end of the first cut-off valve is connected with the fluid inlet; The pressure regulating assembly is arranged on the pressure regulating circuit and communicated with the pressure regulating circuit, and the pressure regulating assembly is located at the end of the automatic valve away from the first cut-off valve.
  • the pressure regulation system further includes: a safety circuit, which is arranged at the outlet end of the pressure regulation circuit, and the safety circuit is connected with the pressure regulation circuit; a protection valve is arranged on the safety circuit, and the protection valve is connected with the safety circuit.
  • the protective valve includes a safety valve and a first vent valve
  • the safety circuit includes a first branch and a second branch arranged in parallel, a safety valve is provided on the first branch, and a first vent valve is provided on the second branch;
  • the safety circuit also includes: a first converging main road, the inlet end of the first converging main road communicates with the pressure regulating circuit, and the outlet end of the first converging main road communicates with the first branch circuit and the second branch circuit respectively.
  • the safety circuit also includes: a second main flow confluence, the inlet ends of the second main flow confluence communicate with the first branch and the second branch respectively, and the outlet end of the second main flow confluence communicates with the fluid inlet; the third The two ends of the third branch are connected with the second converging main road and the pressure regulating circuit respectively, and the second vent valve is arranged on the third branch.
  • the pressure regulation system also includes: a first inflow branch, which is arranged in parallel with the pressure regulation circuit, and the two ends of the first inflow branch are respectively communicated with the pressure regulation circuit, and the inlet end of the first inflow branch is located at the first shut-off valve On the fluid inlet side, the outlet end of the first inflow branch is located between the first shut-off valve and the automatic valve; the second shut-off valve is arranged on the first inflow branch and communicated with the first inflow branch.
  • the pressure regulation system also includes: a second inflow branch, which is arranged in parallel with the pressure regulation circuit, and the two ends of the second inflow branch are connected with the pressure regulation circuit respectively, and the inlet port of the second inflow branch is located at the first cut-off valve Between the automatic valve and the outlet port of the second inflow branch is located on the fluid outlet side of the automatic valve; the third cut-off valve is arranged on the second inflow branch and communicated with the second inflow branch.
  • a PID adjustment module is arranged in the automatic valve.
  • the pressure regulation assembly includes: a fourth cut-off valve, which is arranged on the pressure regulation circuit and communicated with the pressure regulation circuit; It communicates with the fourth cut-off valve and the pressure regulating circuit.
  • the pressure regulating assembly also includes: a pressure regulating valve, which is arranged on the pressure regulating circuit, and the pressure regulating valve is located at the outlet end of the fourth cut-off valve; a pressure guiding pipeline, which is arranged in parallel with the pressure regulating circuit, and Both ends of the pipeline communicate with the pressure regulating valve and the pressure regulating circuit respectively; the outlet end of the pressure regulating pipeline is located at the fluid outlet side of the pressure guiding pipeline.
  • multiple pressure regulating valves there are multiple pressure regulating valves, and the multiple pressure regulating valves are sequentially arranged on the pressure regulating circuit along the flow direction of the fluid; there are multiple pressure guiding pipelines, and the multiple pressure guiding pipelines and the multiple pressure regulating valves Set accordingly.
  • the multiple pressure regulating valves include a first pressure regulating valve and a second pressure regulating valve arranged in sequence along the flow direction of the fluid
  • the multiple pressure introduction pipelines include a first pressure introduction pipeline and a second pressure introduction pipeline;
  • the first pressure introduction pipeline communicates with the first pressure regulating valve
  • the second pressure introduction pipeline communicates with the second pressure regulating valve; wherein, the outlet end of the first pressure introduction pipeline is located on the fluid outlet side of the second pressure introduction pipeline , the outlet end of the pressure regulation pipeline is located on the fluid outlet side of the first pressure introduction pipeline.
  • the multiple pressure regulating valves include a first pressure regulating valve and a second pressure regulating valve arranged in sequence along the flow direction of the fluid
  • the multiple pressure introduction pipelines include a first pressure introduction pipeline and a second pressure introduction pipeline;
  • the first pressure introduction pipeline communicates with the first pressure regulating valve
  • the second pressure introduction pipeline communicates with the second pressure regulating valve; wherein, the outlet end of the first pressure introduction pipeline is located at the fluid inlet side of the second pressure regulating valve,
  • the outlet end of the pressure regulation pipeline is located at the fluid outlet side of the second pressure introduction pipeline.
  • the multiple pressure regulating valves include a first pressure regulating valve and a second pressure regulating valve arranged in sequence along the flow direction of the fluid
  • the multiple pressure introduction pipelines include a first pressure introduction pipeline and a second pressure introduction pipeline;
  • the first pressure introduction pipeline communicates with the first pressure regulating valve
  • the second pressure introduction pipeline communicates with the second pressure regulating valve; wherein, the outlet end of the first pressure introduction pipeline is located at the fluid inlet side of the second pressure regulating valve,
  • the outlet end of the pressure regulating pipeline is located between the outlet end of the first pressure guiding pipeline and the inlet end of the second pressure regulating valve.
  • shut-off valves there are multiple fourth shut-off valves, and the multiple fourth shut-off valves are arranged in sequence along the flow direction of the fluid.
  • the plurality of fourth shut-off valves include a first unit shut-off valve and a second unit shut-off valve arranged in sequence along the flow direction of the fluid
  • the plurality of pressure-regulating pipelines include a first pressure-regulating pipeline and a second pressure-regulating pipeline , the first pressure-regulating pipeline communicates with the first unit shut-off valve, and the second pressure-regulating pipeline communicates with the second unit shut-off valve
  • the plurality of pressure-regulating valves include the first pressure-regulating valve and the second unit that are sequentially arranged along the flow direction of the fluid
  • Two pressure regulating valves a plurality of pressure guiding pipelines include a first pressure guiding pipeline and a second pressure guiding pipeline; the first pressure guiding pipeline communicates with the first pressure regulating valve, and the second pressure guiding pipeline communicates with the second pressure regulating The pressure valve is connected; wherein, the outlet end of the first pressure guiding pipeline is located at the fluid inlet side of the second pressure regulating valve, and the outlet end of the second pressure regulating pipeline is located at the fluid
  • a pressure regulating system control method which is suitable for the above pressure regulating system.
  • the pressure regulating system control method includes: adjusting the first cut-off valve to a first predetermined opening value; opening the automatic valve; Continue to open the first shut-off valve to the maximum opening.
  • the method for obtaining the predetermined opening value includes: after receiving the pressure regulation instruction, detecting the instantaneous pressure value of the fluid at the fluid inlet, and detecting the current opening value of the first cut-off valve; comparing the instantaneous pressure value with the Compared with the preset pressure threshold value, when the instantaneous pressure value is within the range of the pressure threshold value, the interpolation method is used to determine the allowable opening value of the first cut-off valve corresponding to the instantaneous pressure value to allow fluid to pass through; the current opening value and the allowable opening value When the difference between the current opening value and the allowable opening value is less than or equal to the preset difference ratio, the current opening value is the first predetermined opening value.
  • control method of the pressure regulation system further includes: after the first cut-off valve operates at the first predetermined opening value for a predetermined period of time; opening the first cut-off valve to a maximum opening.
  • the pressure regulating system is the above-mentioned pressure regulating system
  • the control method of the pressure regulating system further includes: detecting the instantaneous pressure value of the fluid inlet, opening the first shut-off valve to a second predetermined opening value; opening the second shut-off valve and the third shut-off valve. Cut-off valve; open the automatic valve; open the first cut-off valve to the maximum opening.
  • the pressure regulation system includes a fluid inlet and a fluid outlet, wherein the pressure regulation system also includes: a pressure regulation circuit, the two ends of the pressure regulation circuit are connected with the fluid inlet and the fluid outlet respectively; The inlet port of the pressure circuit is communicated with the pressure regulating circuit; the first shut-off valve is arranged on the pressure regulating circuit and communicated with the pressure regulating circuit, and the inlet port of the first shut-off valve is connected with the fluid inlet; the pressure regulating component is arranged on the pressure regulating circuit On the circuit and communicated with the pressure regulating circuit, the pressure regulating assembly is located at the end of the automatic valve away from the first cut-off valve.
  • the openings of the first cut-off valve and the automatic valve are respectively adjusted to adapt to the change of the fluid pressure in the pressure regulation circuit, and the follow-up
  • the pressure regulating component of the pressure regulating component plays a protective role, and the fluid will not directly rush into the pressure regulating component to cause damage to components, especially the pressure regulating valve in the pressure regulating component. This setting prolongs the service life of the pressure regulating valve.
  • Fig. 1 shows the schematic structural view of the first embodiment of the pressure regulating system according to the present application
  • Figure 2 shows a partial enlarged view of the pressure regulation system according to Figure 1;
  • Fig. 3 shows the structural representation of the second embodiment of the pressure regulation system according to the present application
  • Figure 4 shows a partial enlarged view of the pressure regulation system according to Figure 2;
  • FIG. 5 shows a schematic structural view of a first embodiment of a pressure regulating assembly in a pressure regulating system according to the present application
  • FIG. 6 shows a schematic structural view of a second embodiment of the pressure regulating assembly in the pressure regulating system according to the present application
  • FIG. 7 shows a schematic structural view of a third embodiment of the pressure regulating assembly in the pressure regulating system according to the present application.
  • FIG. 8 shows a schematic structural view of a fourth embodiment of the pressure regulating assembly in the pressure regulating system according to the present application.
  • FIG. 9 shows a schematic structural view of a fifth embodiment of the pressure regulating assembly in the pressure regulating system according to the present application.
  • Fig. 10 shows the control flow diagram of the first embodiment of the pressure regulating system control method according to the present application
  • Fig. 11 shows the control flowchart of the second embodiment of the control method of the pressure regulating system according to the present application
  • Fig. 12 shows a control flow chart of the third embodiment of the control method of the pressure regulating system according to the present application.
  • Safety loop 51. First branch; 52. Second branch; 510. Safety valve; 520. First vent valve; Three branches; 550, the second vent valve; 6, the first inflow branch; 60, the second shut-off valve; 7, the second inflow branch; 70, the third shut-off valve;
  • the present application provides a kind of pressure regulation system, comprises fluid inlet 100 and fluid outlet 200, and pressure regulation system also includes: pressure regulation circuit 1, and the two ends of pressure regulation circuit 1 are respectively connected with fluid inlet 100 It communicates with the fluid outlet 200; the automatic valve 2 is set at the inlet end of the pressure regulating circuit 1 and communicates with the pressure regulating circuit 1; the first block valve 3 is set on the pressure regulating circuit 1 and communicates with the pressure regulating circuit 1, and the first The inlet end of the shut-off valve 3 communicates with the fluid inlet 100; the pressure regulating assembly 4 is arranged on the pressure regulating circuit 1 and communicates with the pressure regulating circuit 1, and the pressure regulating assembly 4 is located at the end of the automatic valve 2 away from the first shut-off valve 3.
  • the pressure regulating system provided according to the present application includes a fluid inlet 100 and a fluid outlet 200, wherein the pressure regulating system further includes: a pressure regulating circuit 1.
  • the two ends of the pressure regulating circuit 1 are respectively connected with the fluid inlet 100 and the fluid outlet 200;
  • the automatic valve 2 is set at the inlet end of the pressure regulating circuit 1 and communicated with the pressure regulating circuit 1;
  • the first cut-off valve 3 is set at the regulating On the pressure regulating circuit 1 and communicated with the pressure regulating circuit 1, the inlet port of the first shut-off valve 3 communicates with the fluid inlet 100;
  • the pressure regulating assembly 4 is arranged on the pressure regulating circuit 1 and communicates with the pressure regulating circuit 1, and the pressure regulating assembly 4 Located at the end of the automatic valve 2 away from the first shut-off valve 3 .
  • the openings of the first cut-off valve 3 and the automatic valve 2 are respectively adjusted to adapt to the fluid pressure in the pressure regulation circuit.
  • the change can protect the subsequent pressure regulating assembly 4, and the fluid will not directly rush into the pressure regulating assembly 4 and cause damage to components, especially the pressure regulating valve in the pressure regulating assembly 4. This setting prolongs the pressure regulation service life of the valve.
  • the pressure regulating system also includes an inlet manifold 300 and an outlet manifold 400.
  • the fluid inlet 100 is arranged on the inlet manifold 300.
  • the fluid is fed into each pressure regulating circuit 1 respectively; the outlet end of each pressure regulating circuit 1 is connected with the outlet collecting pipe 400 , and the fluid flowing out of each pressure regulating circuit 1 is collected through the outlet collecting pipe 400 .
  • the pressure regulating system also includes: a safety circuit 5, which is set at the outlet of the pressure regulating circuit 1, and the safety circuit 5 and the pressure regulating circuit 1 Connected; the safety circuit 5 is provided with a protective valve, and the protective valve communicates with the safety circuit 5 . Through the protective valve, part of the fluid is released when the fluid pressure is too high, so as to protect the pressure regulating circuit 1.
  • the protection valve includes a safety valve 510 and a first vent valve 520
  • the safety circuit 5 includes a first branch 51 and a second branch 52 arranged in parallel, the first branch 51 is provided with a safety valve 510, and the first branch 51 is provided with a safety valve 510.
  • the second branch 52 is provided with a first vent valve 520;
  • the safety circuit 5 also includes: a first converging main road 53, the inlet end of the first converging main road 53 communicates with the pressure regulating circuit 1, and the outlet of the first converging main road 53 The ends communicate with the first branch 51 and the second branch 52, respectively.
  • the safety circuit 5 also includes: a second trunk road 54, the inlet end of the second trunk road 54 communicates with the first branch 51 and the second branch 52 respectively, and the outlet end of the second trunk road 54 communicates with the fluid inlet 100 Communication; the third branch 55, the two ends of the third branch 55 are respectively connected with the second converging trunk 54 and the pressure regulating circuit 1, and the third branch 55 is provided with a second vent valve 550.
  • the safety valve 510 When the fluid pressure in the pressure regulating circuit 1 is too high, the safety valve 510 is opened, and part of the fluid flows through the safety valve 510 to the second converging main road 54, and then flows back to the fluid inlet for the next cycle; when the fluid pressure reaches At a certain height, one or all of the first vent valve 520 or the second vent valve 550 is opened to release part of the fluid.
  • the pressure regulating system also includes: the first The inflow branch 6 is arranged in parallel with the pressure regulating circuit 1, and the two ends of the first inflow branch 6 communicate with the pressure regulating circuit 1 respectively, and the inlet end of the first inflow branch 6 is located at the fluid inlet side of the first shut-off valve 3, The outlet end of the first inflow branch 6 is located between the first shut-off valve 3 and the automatic valve 2 ; the second shut-off valve 60 is arranged on the first inflow branch 6 and communicates with the first inflow branch 6 . In this way, when the fluid flows into the pressure regulating circuit 1 , part of the fluid pressure in the first shut-off valve 3 is shared by the second cut-off valve 60 , so as to protect the first shut-off valve 3 .
  • the pressure regulation system also includes: a second inflow branch 7, which is arranged in parallel with the pressure regulation circuit 1, the two ends of the second inflow branch 7 communicate with the pressure regulation circuit 1 respectively, and the inlet end of the second inflow branch 7 Located between the first cut-off valve 3 and the automatic valve 2, the outlet end of the second inflow branch 7 is located on the fluid outlet side of the automatic valve 2; the third cut-off valve 70 is arranged on the second inflow branch 7 and connected to the second The inflow branch 7 is connected.
  • the automatic valve 2 is protected by the third shut-off valve 70.
  • the second shut-off valve 60 and the third shut-off valve 70 are opened to prevent the opening of the first shut-off valve 3 from being too small to bear. Fluid pressure condition.
  • this embodiment is an improvement made on the basis of the second embodiment, specifically, the automatic valve 2 is provided with a PID adjustment module.
  • the automatic valve 2 has a PID adjustment function.
  • the pressure regulating assembly 4 has different implementations, and the following different implementations of the pressure regulating assembly 4 are applicable to any one of the above-mentioned embodiments 1 to 3, specifically: the pressure regulating assembly 4 includes: the fourth The cut-off valve 40 is arranged on the pressure regulating circuit 1 and communicated with the pressure regulating circuit 1; the pressure regulating pipeline 41 is arranged in parallel with the pressure regulating circuit 1, and the two ends of the pressure regulating pipeline 41 are respectively connected to the fourth The cut-off valve 40 communicates with the pressure regulating circuit 1 .
  • pressure introduction pipeline 43 which is arranged in parallel with pressure regulation circuit 1, and the two ends of pressure introduction pipeline 43 are connected with pressure regulating valve 42 and pressure regulation circuit 1 respectively; the outlet of pressure regulation pipeline 41 The end is located on the fluid outlet side of the pressure introduction line 43 .
  • the bypass line of the fourth cut-off valve 40 is opened, and part of the fluid flows into the pressure regulating circuit 1 through the pressure introduction line 43 over the pressure regulating valve 42, and the other part of the fluid is passed through the pressure regulating valve 42.
  • the pressure of another part of the fluid in the pressure regulating valve 42 will be lower than the predetermined pressure in the system, so that after being adjusted by the pressure regulating valve 42
  • the pressure at the fluid outlet 200 can only be guaranteed to be the required pressure when the fluid under pressure merges with the fluid in the pressure introduction pipeline 43 .
  • the multiple pressure-regulating valves 42 include a first pressure-regulating valve 421 and a second pressure-regulating valve 422 arranged in sequence along the flow direction of the fluid, and multiple pressure-inducing pipelines 43 Including a first pressure introduction pipeline 431 and a second pressure introduction pipeline 432; the first pressure introduction pipeline 431 communicates with the first pressure regulating valve 421, and the second pressure introduction pipeline 432 communicates with the second pressure regulating valve 422; wherein The outlet end of the first pressure introduction pipeline 431 is located at the fluid outlet side of the second pressure introduction pipeline 432 , and the outlet end of the pressure regulation pipeline 41 is located at the fluid outlet side of the first pressure introduction pipeline 431 .
  • first pressure regulating valve 421 and the second pressure regulating valve 422 are used to regulate the pressure of the fluid.
  • One part of the fluid is regulated by the first pressure regulating valve 421, and the other part of the fluid is regulated by the second pressure regulating valve 422.
  • the first pressure regulating valve 421 and the second pressure regulating valve 422 are used to regulate the pressure of the fluid.
  • One part of the fluid is regulated by the first pressure regulating valve 421, and the other part of the fluid is regulated by the second pressure regulating valve 422.
  • the pressure regulating assembly 4 there are multiple pressure regulating valves 42, and the plurality of pressure regulating valves 42 are sequentially arranged on the pressure regulating circuit 1 along the flow direction of the fluid; There are multiple passages 43 , and the multiple pressure introduction pipelines 43 are set in one-to-one correspondence with the multiple pressure regulating valves 42 .
  • the multiple pressure regulating valves 42 include a first pressure regulating valve 421 and a second pressure regulating valve 422 arranged in sequence along the flow direction of the fluid.
  • the outlet end of a pressure guiding pipeline 431 is located at the fluid inlet side of the second pressure regulating valve 422 , and the outlet end of the pressure regulating pipeline 41 is located at the fluid outlet side of the second pressure guiding pipeline 432 .
  • the staged pressure regulation of the fluid is set, the first pressure regulation valve 421 is used for the first pressure regulation of the fluid, and the second pressure regulation valve 422 is used for the second pressure regulation of the fluid, so as to achieve the protection of each pressure regulating valve 42 Purpose.
  • the pressure regulating assembly 4 there are multiple pressure regulating valves 42, and the plurality of pressure regulating valves 42 are sequentially arranged on the pressure regulating circuit 1 along the flow direction of the fluid; There are multiple passages 43 , and the multiple pressure introduction pipelines 43 are set in one-to-one correspondence with the multiple pressure regulating valves 42 .
  • the multiple pressure regulating valves 42 include a first pressure regulating valve 421 and a second pressure regulating valve 422 arranged in sequence along the flow direction of the fluid.
  • the outlet end of a pressure guiding pipeline 431 is located on the fluid inlet side of the second pressure regulating valve 422 , and the outlet end of the pressure regulating pipeline 41 is located between the outlet end of the first pressure guiding pipeline 431 and the inlet end of the second pressure regulating valve 422 between.
  • the staged pressure regulation of the fluid is set.
  • the first pressure regulating valve 421 is used to regulate the pressure of the fluid for the first time
  • the second pressure regulating valve 422 is used to regulate the pressure of the fluid for the second time.
  • the pressure circuit When the pressure circuit is on, it merges with the fluid in the first pressure introduction pipeline 431 , and further, uses the second pressure regulating valve 422 to regulate the pressure to protect each pressure regulating valve 42 .
  • the pressure regulating assembly 4 there are multiple fourth shut-off valves 40, and the multiple fourth shut-off valves 40 are sequentially arranged along the flow direction of the fluid, and the pressure regulating pipeline 41 is multiple.
  • a plurality of pressure regulating pipelines 41 and a plurality of fourth cut-off valves 40 are provided in one-to-one correspondence.
  • the plurality of fourth shut-off valves 40 include a first unit shut-off valve 401 and a second unit shut-off valve 402 arranged in sequence along the flow direction of the fluid.
  • the multiple pressure regulating pipelines 41 include a first pressure regulating pipeline 411 and a second pressure regulating pipeline 412, the first pressure regulating pipeline 411 communicates with the first unit shut-off valve 401, the second pressure regulating pipeline 412 communicates with the second pressure regulating pipeline 412
  • the two unit cut-off valves 402 are connected;
  • the plurality of pressure regulating valves 42 include a first pressure regulating valve 421 and a second pressure regulating valve 422 arranged in sequence along the flow direction of the fluid, and a plurality of pressure introduction pipelines 43 include a first pressure introduction pipeline 431 and the second pressure introduction pipeline 432;
  • the first pressure introduction pipeline 431 communicates with the first pressure regulating valve 421, and the second pressure introduction pipeline 432 communicates with the second pressure regulating valve 422;
  • the first pressure introduction pipeline The outlet end of 431 is located on the fluid inlet side of the second pressure regulating valve 422, and the outlet end of the second pressure regulating pipeline 412 is located between the fluid outlet side of the first pressure guiding pipeline
  • the present application also provides a pressure regulating system control method, as shown in Figure 10 to Figure 12, which is applicable to the pressure regulating system of the above embodiment, the pressure regulating system control method includes: adjusting the first cut-off valve 3 to the first predetermined opening Degree value; open the automatic valve 2; continue to open the first cut-off valve 3 to the maximum opening. In this way, the first cut-off valve 3 is opened to a predetermined opening degree. When a part of the fluid passes through the first cut-off valve 3, the automatic valve 2 is opened. The automatic valve 2 adjusts its own opening degree according to the inflow pressure of the fluid. When the system is stable, The first cut-off valve 3 is fully opened. Wherein, a valve position sensor 30 is arranged on the first shut-off valve 3 to detect the opening degree of the first shut-off valve 3 .
  • the method for obtaining the predetermined opening value includes: detecting the instantaneous pressure value of the fluid at the fluid inlet 100 after receiving the pressure regulation instruction, and detecting the first The current opening value of the cut-off valve 3; compare the instantaneous pressure value with the preset pressure threshold in the system, and when the instantaneous pressure value is within the range of the pressure threshold, use the interpolation method to determine the first cut-off valve 3 corresponding to the instantaneous pressure value
  • the allowable opening value that allows fluid to pass through; compare the current opening value with the allowable opening value, when the difference between the current opening value and the allowable opening value is less than or equal to the preset difference ratio, the current opening value is the first a predetermined opening value.
  • different pressure values at the fluid inlet 100 correspond to different openings of the first shut-off valve 3 respectively, and the relationship between the two is linear.
  • the value is compared with the pressure value stored in the system, and when the actual instantaneous pressure value is within the threshold value stored in the system, the allowable opening value of the first shut-off valve 3 that allows fluid to pass is obtained by interpolation.
  • the preset difference ratio a is greater than or equal to 0.0001.
  • the control method of the pressure regulating system further includes: after the first cut-off valve 3 operates at the first predetermined opening value for a predetermined period of time; opening the first cut-off valve 3 to a maximum opening.
  • Such setting is to ensure the stable operation of the first cut-off valve 3 within a predetermined time period s, and then fully open the first cut-off valve 3 .
  • s is greater than or equal to 0.01.
  • the pressure regulation system is the pressure regulation system of the second embodiment above, and the control method of the pressure regulation system further includes: detecting the instantaneous pressure value of the fluid inlet 100, opening the first A cut-off valve 3 to the second predetermined opening value; open the second cut-off valve 60 and the third cut-off valve 70; open the automatic valve 2; open the first cut-off valve 3 to the maximum opening. Since the second shut-off valve 60 and the third shut-off valve 70 are provided to share the pressure in the first shut-off valve 3, in this embodiment, the first shut-off valve 3 can be directly opened to a predetermined opening degree a, and then the automatic shut-off valve 3 can be opened. After the valve, slowly open the first shut-off valve 3 to fully open.
  • the automatic valve since the PID adjustment module is installed in the automatic valve, the automatic valve is opened after the first shut-off valve 3 is fully opened, and the opening degree of the automatic valve is determined to a through PID adjustment. , and further slowly open the automatic valve to the maximum opening.
  • the pressure regulating system provided according to the present application includes a fluid inlet 100 and a fluid outlet 200, wherein the pressure regulating system further includes: a pressure regulating circuit 1.
  • the two ends of the pressure regulating circuit 1 are respectively connected with the fluid inlet 100 and the fluid outlet 200;
  • the automatic valve 2 is set at the inlet end of the pressure regulating circuit 1 and communicated with the pressure regulating circuit 1;
  • the first cut-off valve 3 is set at the regulating On the pressure regulating circuit 1 and communicated with the pressure regulating circuit 1, the inlet port of the first shut-off valve 3 communicates with the fluid inlet 100;
  • the pressure regulating assembly 4 is arranged on the pressure regulating circuit 1 and communicates with the pressure regulating circuit 1, and the pressure regulating assembly 4 Located at the end of the automatic valve 2 away from the first shut-off valve 3 .
  • the openings of the first cut-off valve 3 and the automatic valve 2 are respectively adjusted to adapt to the fluid pressure in the pressure regulation circuit.
  • the change can protect the subsequent pressure regulating assembly 4, and the fluid will not directly rush into the pressure regulating assembly 4 and cause damage to components, especially the pressure regulating valve in the pressure regulating assembly 4. This setting prolongs the pressure regulation service life of the valve.

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  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Fluid Pressure (AREA)

Abstract

L'invention concerne un système de régulation de pression et un procédé de commande de système de régulation de pression. Le système de régulation de pression comprend une entrée de fluide (100) et une sortie de fluide (200). Le système de régulation de pression comprend en outre : une boucle de régulation de pression (1), deux extrémités de la boucle de régulation de pression étant respectivement en communication avec l'entrée de fluide et la sortie de fluide ; une soupape automatique (2) qui est disposée au niveau d'une extrémité d'entrée de la boucle de régulation de pression et qui est en communication avec la boucle de régulation de pression ; une première vanne d'arrêt (3) qui est disposée sur la boucle de régulation de pression et qui est en communication avec la boucle de régulation de pression, une extrémité d'entrée de la première vanne d'arrêt étant en communication avec l'entrée de fluide ; et un ensemble de régulation de pression (4) qui est disposé sur la boucle de régulation de pression et qui est en communication avec la boucle de régulation de pression, l'ensemble de régulation de pression étant situé à l'extrémité de la soupape automatique à l'opposé de la première vanne d'arrêt. Le système de régulation de pression et le procédé de commande du système de régulation de pression peuvent exercer un effet de protection sur l'ensemble de régulation de pression ultérieur, de telle sorte qu'un fluide ne peut pas être directement rincé dans l'ensemble de régulation de pression et provoquer ainsi un endommagement des composants, en particulier une soupape de régulation de pression dans l'ensemble de régulation de pression, ce qui permet de prolonger la durée de vie de la soupape de régulation de pression.
PCT/CN2022/084145 2022-02-21 2022-03-30 Système de régulation de pression et procédé de commande de système de régulation de pression WO2023155275A1 (fr)

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