Voltage stabilizing device, voltage stabilizing system, voltage stabilizing method

Abstract

The present disclosure relates to the field of analytical instruments and detection, in particular to a pressure stabilizing device, a pressure stabilizing system and a pressure stabilizing method. The pressure stabilizing device comprises a first regulating loop arranged in a closed loop, the first regulating loop comprising a first pressure stabilizing chamber connected thereto, the first pressure stabilizing chamber having a first output end for supplying gas to the outside; a speed regulating device and a first gas resistor connected at both ends of the first pressure stabilizing chamber, the speed regulating device being used to regulate the flow rate of the gas in the first regulating loop; a first gas inlet end arranged between the speed regulating device and the first gas resistor; the pressure stabilizing device comprises a first pressure detecting device arranged on the first pressure stabilizing chamber, which is used to acquire current pressure data in the first pressure stabilizing chamber in real time and feed back the current pressure data; and a controller receiving the current pressure data fed back by the first pressure detecting device, calculating a pressure difference between the current pressure data and a preset pressure in the first pressure stabilizing chamber, and controlling the speed regulating device to adjust the pressure value in the first pressure stabilizing chamber according to the pressure difference.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the field of analytical instruments and detection, in particular to a pressure stabilizing device, pressure stabilizing system and pressure stabilizing method. BACKGROUND

[0002] In some detection devices sensitive to air pressure, such as portable ion mobility spectrometers, the detection performance is affected by air pressure changes in different altitudes, such as the ion source performance is seriously affected at low air pressure, causing signal distortion phenomena such as overload. SUMMARY

[0003] In view of the above problems, the present disclosure provides a pressure stabilizing device, pressure stabilizing system and pressure stabilizing method.

[0004] According to a first aspect of the present disclosure, a pressure stabilizing device is provided, comprising:

[0005] a first regulating loop arranged in a closed loop, the first regulating loop comprising:

[0006] a first pressure stabilizing chamber connected thereto, the first pressure stabilizing chamber having a first output end for supplying gas to the outside world;

[0007] a speed regulating device and a first gas resistance connected at both ends of the first pressure stabilizing chamber, the speed regulating device being used to regulate the gas flow rate in the first regulating loop; and

[0008] a first gas inlet arranged between the speed regulating device and the first gas resistance;

[0009] The pressure stabilizing device further comprises:

[0010] a first pressure detecting device arranged on the first pressure stabilizing chamber, used to obtain current pressure data in the first pressure stabilizing chamber in real time and feed back the current pressure data; and

[0011] a controller configured to receive the current pressure data fed back by the first pressure detecting device, calculate a pressure difference between the current pressure data and a preset pressure in the first pressure stabilizing chamber, and control the speed regulating device to adjust the air pressure value in the first pressure stabilizing chamber according to the pressure difference.

[0012] In some embodiments, the speed regulating device is connected to the gas inlet of the first pressure stabilizing chamber, and the first gas resistance is connected to the gas outlet of the first pressure stabilizing chamber.

[0013] In some embodiments, the first gas resistance is connected to the gas inlet of the first pressure stabilizing chamber, and the speed regulating device is connected to the gas outlet of the first pressure stabilizing chamber.

[0014] In some embodiments, a second regulating loop in a closed loop arrangement is further included, comprising: a second pressure stabilizing chamber connected thereto, the second pressure stabilizing chamber having a second output end for supplying gas to the outside environment, the second output end being in communication with the first gas inlet end; a first pump body connected to the gas outlet end of the second pressure stabilizing chamber; a second gas resistor connected to the gas inlet end of the second pressure stabilizing chamber; and a second gas inlet end disposed between the first pump body and the second gas resistor, the second gas inlet end being adapted to communicate with the outside environment.

[0015] In some embodiments, a third regulating loop in a closed loop arrangement is further included, comprising: a third pressure stabilizing chamber connected thereto, the third pressure stabilizing chamber having a third output end for supplying gas to the outside environment, the third output end being in communication with the first gas inlet end; a second pump body connected to the gas inlet end of the third pressure stabilizing chamber; a third gas resistor connected to the gas outlet end of the third pressure stabilizing chamber; and a third gas inlet end disposed between the second pump body and the third gas resistor, the third gas inlet end being adapted to communicate with the outside environment.

[0016] In some embodiments, a filter is further included, connected to the first regulating loop and disposed between the first gas inlet end and the gas inlet end of the first pressure stabilizing chamber.

[0017] In some embodiments, the filter is connected to the gas outlet end side of the speed regulating device.

[0018] In some embodiments, a waste gas recovery end is further included, connected between the gas inlet end of the speed regulating device and the gas outlet end of the first pressure stabilizing chamber, and adapted to communicate with a waste gas generation end of the pressure stabilizing device; wherein the mass flow rate of the speed regulating device is greater than the mass flow rate of the waste gas recovery end.

[0019] In some embodiments, a second pressure detecting device is further connected to the controller, the second pressure detecting device being configured to acquire the atmospheric pressure of the current environment when the current pressure data detected is the relative air pressure.

[0020] In some embodiments, the speed regulating device is configured as a speed regulating pump, and the controller controls the rotation speed of the speed regulating pump to regulate the gas flow rate in the first regulating loop.

[0021] In some embodiments, a first valve is connected between the speed regulating device and the first gas resistor, a valve port of the first valve being configured as the first gas inlet end.

[0022] In some embodiments, a second valve is connected between the first pump body and the second gas resistor, a valve port of the second valve being configured as the second gas inlet end.

[0023] In some embodiments, a third valve is connected between the second pump body and the third gas resistance, and a valve port of the third valve is configured as the third gas inlet.

[0024] A second aspect of the present disclosure provides a pressure stabilizing system, comprising: a plurality of pressure stabilizing devices as described in any one of the preceding aspects; wherein the plurality of first pressure detection devices feed the plurality of current pressure data to the same controller.

[0025] A third aspect of the present disclosure provides a pressure stabilizing method, applicable to the pressure stabilizing system as described in the preceding aspects, comprising:

[0026] S1: obtaining current pressure data of a plurality of first pressure stabilizing chambers;

[0027] S2: according to the obtained plurality of current pressure data, using the same controller to calculate the difference between the plurality of current pressure data and the preset pressure of the first pressure stabilizing chamber, respectively;

[0028] S3: calculating the adjustment parameter of the speed regulation device according to the difference;

[0029] S4: adjusting the gas flow rate in the first adjustment loop according to the adjustment parameter.

[0030] In some embodiments, the controller is a multi-channel controller, and before S1, further comprising: setting a first count mark for the plurality of first pressure detection devices; and setting a second count mark for the communication channel of the controller.

[0031] In some embodiments, before S3, further comprising:

[0032] determining whether the first count mark is equal to the second count mark;

[0033] when the first count mark is equal to the second count mark, performing S3.

[0034] In some embodiments, when the first count mark is not equal to the second count mark, then delaying the execution of S3.

[0035] In some embodiments, the pressure stabilizing device further comprises a second pressure detection device connected to the controller, and S1 comprises:

[0036] determining whether the pressure data obtained by the first pressure detection device is absolute pressure;

[0037] if not, controlling the second pressure detection device to obtain the current atmospheric pressure of the environment.

[0038] The pressure stabilizing device in the present disclosure is applicable to providing stable pressure to instruments such as detection instruments and the like which need stable pressure supply, so as to ensure good working state of the instruments. Based on this, the present disclosure is provided with a first regulating loop, and the first regulating loop is provided with a first pressure stabilizing chamber, a first gas resistance and a speed regulating device. When the speed regulating device regulates the gas flow rate in the regulating loop, the pressure value in the first pressure stabilizing chamber can be regulated in cooperation with the pressure regulating and flow limiting action of the first gas resistance. It can be understood that the stable supply of pressure needs to be ensured during the supply of pressure. The present disclosure is provided with a first pressure detecting device on the first pressure stabilizing chamber. When the gas pressure in the first pressure stabilizing chamber changes, the first speed regulating device is controlled to work by the controller, so as to adjust the gas pressure value in the first pressure stabilizing chamber to the preset pressure value, so as to realize the stable pressure supply of the pressure stabilizing device to be stabilized, and ensure the stable working state of the pressure stabilizing device to be stabilized under different gas pressures or altitudes. BRIEF DESCRIPTION OF DRAWINGS

[0039] The above content and other purposes, features and advantages of the present disclosure will be more clearly understood through the following description of the embodiments of the present disclosure with reference to the accompanying drawings, in which:

[0040] Figure 1 The principle schematic diagram of the pressure stabilizing device according to the embodiments of the present disclosure is schematically shown;

[0041] Figure 2 The principle schematic diagram of the pressure stabilizing device according to the embodiments of the present disclosure is schematically shown;

[0042] Figure 3 The principle schematic diagram of the pressure stabilizing device according to the embodiments of the present disclosure is schematically shown;

[0043] Figure 4 The principle schematic diagram of the pressure stabilizing device according to the embodiments of the present disclosure is schematically shown;

[0044] Figure 5 The principle schematic diagram of the pressure stabilizing device according to the embodiments of the present disclosure is schematically shown;

[0045] Figure 6 The principle schematic diagram of the pressure stabilizing device according to the embodiments of the present disclosure is schematically shown;

[0046] Figure 7 The structure schematic diagram of the controller according to the embodiments of the present disclosure is schematically shown;

[0047] Figure 8 The flow chart of the pressure stabilizing method according to the embodiments of the present disclosure is schematically shown;

[0048] Figure 9 The flow chart of another pressure stabilizing method in the embodiments of the present disclosure is schematically shown;

[0049] Figure 10 A flowchart illustrating another pressure stabilizing method according to an embodiment of the disclosure is schematically shown;

[0050] Figure 11 A flowchart illustrating yet another pressure stabilizing method according to an embodiment of the disclosure is schematically shown.

[0051] BRIEF DESCRIPTION OF DRAWINGS

[0052] 1 - first regulating loop; 11 - first pressure stabilizing chamber; 12 - first air resistance; 13 - speed regulating device; 14 - filter; 15 - first valve; 16 - waste gas recovery valve;

[0053] 2 - first pressure detecting device;

[0054] 3 - controller; 31 - analog-to-digital converter; 32 - microcontroller; 33 - digital-to-analog converter; 34 - memory;

[0055] 4 - second pressure detecting device;

[0056] 5 - second regulating loop; 51 - second pressure stabilizing chamber; 52 - first pump body; 53 - second air resistance; 54 - second valve;

[0057] 6 - third regulating loop; 61 - third pressure stabilizing chamber; 62 - second pump body; 63 - third air resistance; 64 - third valve;

[0058] 7 - device to be pressure stabilized. DETAILED DESCRIPTION

[0059] Hereinafter, embodiments of the disclosure will be described with reference to the accompanying drawings. It should be understood, however, that the description which follows is merely illustrative and is not intended to limit the scope of the disclosure. In the following detailed description of embodiments of the disclosure, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the disclosure. However, it will be apparent to one skilled in the art that one or more embodiments of the disclosure can be practiced without these specific details. In other instances, well-known structures and

[0060] The terms used herein are merely used to describe specific embodiments and are not intended to limit the disclosure. The terms "include", "comprise" and the like used herein indicate the presence of the described features, steps, operations, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, or components.

[0061] All terms used herein, including technical and scientific terms, have the same meanings as those generally understood by those skilled in the art unless otherwise defined. It should be noted that the terms used herein should be interpreted as having meanings consistent with the context of the specification, and should not be interpreted in an idealized or excessively formal manner.

[0062] In the case of using expressions similar to "at least one of A, B, and C, etc.", it is generally understood that the expression is to be interpreted in the same manner as "at least one of A, B, and C, but not including the case wherein A alone, B alone, C alone, or a combination of A and B, A and C, B and C exist." In addition, in the case of using expressions similar to "one or more of A, B, and C, etc.", it is generally understood that the expression is to be interpreted in the same manner as "at least one of A, B, and C, and additionally, any combination of A, B, and C."

[0063] As shown in Figure 1 The embodiment of the present disclosure provides a pressure stabilizing device, which comprises: a first regulating loop 1 arranged in a closed loop, the first regulating loop 1 comprising: a first pressure stabilizing chamber 11 connected thereto, the first pressure stabilizing chamber 11 having a first output end for supplying gas to the outside world; a speed regulating device 13 and a first gas resistance 12 connected to both ends of the first pressure stabilizing chamber 11, the speed regulating device 13 being used to regulate the flow rate of the gas in the first regulating loop 1; and a first gas inlet arranged between the speed regulating device 13 and the first gas resistance 12; the pressure stabilizing device further comprises: a first pressure detecting device 2 arranged on the first pressure stabilizing chamber 11, used to obtain current pressure data in the first pressure stabilizing chamber 11 in real time and feed back the current pressure data; and a controller 3, which is configured to: receive the current pressure data fed back by the first pressure detecting device 2, calculate a pressure difference with a preset pressure in the first pressure stabilizing chamber 11 according to the current pressure data, and control the speed regulating device 13 to adjust the gas pressure value in the first pressure stabilizing chamber 11 according to the pressure difference.

[0064] The main function of the pressure stabilizing device in the present disclosure is to provide stable supply pressure to the equipment needing stable pressure input through the first pressure stabilizing chamber 11, the first pressure stabilizing chamber 11 is provided with a first output end in communication with the outside world, the first output end is responsible for physical connection with the equipment needing pressure stabilization, so as to realize the introduction of the gas in the first pressure stabilizing chamber 11 into the equipment needing pressure stabilization, it should be noted that the use object of the present disclosure is mainly detection type instruments and meters such as ion mobility mass spectrometer, etc., the pressure output by the first output end is absolute pressure, which is convenient for direct use.

[0065] It can be understood that, as a cavity structure connected in the pipeline, when the gas flow in the pipeline enters from the gas inlet end of the first pressure stabilizing chamber 11, the flow channel space becomes larger and the flow rate becomes slower, which reduces the influence of the gas flow rate pulse on the pressure in the first pressure stabilizing chamber 11 and improves the transient response capability of the gas pressure, which is beneficial to the stability of the pressure in the first pressure stabilizing chamber 11.

[0066] As shown in Figure 1 The pressure stabilizing device with pressure boosting and stabilizing provided in the present disclosure is applied to the scene where the stable gas pressure value required by the equipment needing pressure stabilization 7 is greater than the atmospheric pressure in the current use environment.

[0067] It should be noted that the arrow in the figure indicates the direction of the airflow. For the sake of clarity, the first output end defined in the present disclosure is the port in the first pressure stabilizing chamber 11 connected to the device to be stabilized 7, the air inlet end of the first pressure stabilizing chamber 11 is the interface through which the airflow in the first regulating circuit 1 flows into the first pressure stabilizing chamber 11, and the air outlet end of the first pressure stabilizing chamber 11 is the interface through which the airflow in the first regulating circuit 1 reflows from the first pressure stabilizing chamber 11 into the pipeline. The first output end, the air inlet end of the first pressure stabilizing chamber 11, and the air outlet end of the first pressure stabilizing chamber 11 can all adopt common interface structures, which will not be described here. The definitions of the first air resistance 12, the second pressure stabilizing chamber 51, the third pressure stabilizing chamber 61, and the like in the following description are the same as the definitions in the first pressure stabilizing chamber 11, and will not be described one by one in the following description.

[0068] It can be understood that, since the first output end needs to be connected to the device to be stabilized, the corresponding interface device on the first output end needs to be adapted to the device to be stabilized to facilitate the use of the pressure stabilizing device.

[0069] It can be understood that, when the flow direction of the airflow in the gas circuit changes, the air inlet end of the first pressure stabilizing chamber 11 and the air outlet end of the first pressure stabilizing chamber 11 in the above description can also realize the inflow and outflow of the airflow into the first pressure stabilizing chamber 11, and the name definition will not limit the actual use function.

[0070] It can be understood that, in the process of outputting pressure regulation of the first output end, in order to reduce or increase the pressure in the closed first regulating circuit 1, gas needs to be discharged to the outside or supplemented into the first regulating circuit 1, so a first air inlet end is provided between the speed regulating device 13 and the first air resistance 12 to facilitate the exchange of gas between the first regulating circuit 1 and the outside. Further, the first air inlet end in the present embodiment is provided with a first valve 15, which is an electromagnetic three-way valve. One valve port is used as the first air inlet end connected to the outside atmosphere, and the other two ports are connected to the first air resistance 12 and the speed regulating device 13, respectively. When the atmospheric pressure stabilizing device in the embodiment of the present disclosure is in a non-working state during use or in a transportation or display state during sales, the valve core of the first valve 15 is closed, which can prevent dust and impurities in the outside environment from entering the interior of the device and affecting the performance of the device, especially in some highly polluted environments. In other embodiments, the first valve 15 can also be a four-way valve, a five-way valve, or the like, which can be adapted according to the connection needs.

[0071] It can be understood that, in the case of normal test environment, for the purpose of saving cost, in some embodiments, only a tee structure can be provided on the first gas inlet end, one interface of the tee is used for communication with the outside, and clean gas can be output through the tee at any time by relying on continuous dynamic adjustment of the adjusting device 3. In the normal test environment, the use of the tee can avoid the problem of equipment wear caused by the impact and wear of the fluid on the valve core.

[0072] The speed regulating device 13 in the embodiment is a common speed regulating pump, and the controller 3 controls the rotating speed of the speed regulating pump to adjust the gas flow rate in the first adjusting loop 1. Specifically, the higher the pump speed is, the higher the gas flow rate in the first adjusting loop 1 is, and the greater the pressure drop of the gas flowing through the first gas resistance 12 is, thereby forming a pressure difference between the gas inlet end of the first pressure stabilizing chamber 11 and the gas outlet end of the first pressure stabilizing chamber 11 to realize the basic pressure regulating function.

[0073] The first pressure regulating device in the embodiment is a common gas pressure transmitter.

[0074] Therefore, the pressure stabilizing device in the embodiment is suitable for providing stable pressure to devices such as ion mobility spectrometers that need stable pressure supply, so as to ensure good working state of the ion mobility spectrometer. Taking the ion mobility spectrometer as an example, the performance of the ion source is seriously affected under low gas pressure, causing signal distortion phenomena such as overload. Based on this, the first adjusting loop 1 is provided in the embodiment, the first adjusting loop 1 is provided with the first pressure stabilizing chamber 11, the first gas resistance 12 and the speed regulating device 13, and when the speed regulating device 13 adjusts the gas flow rate in the loop, the pressure value in the first pressure stabilizing chamber 11 can be adjusted in cooperation with the pressure regulating and flow limiting action of the first gas resistance 12. It can be understood that, in the process of pressure supply, it is necessary to ensure stable supply of pressure, and the first pressure detecting device 2 is installed on the first pressure stabilizing chamber 11 in the embodiment, when the gas pressure in the first pressure stabilizing chamber 11 changes, the rotating speed of the speed regulating device 13 is controlled by the controller 3 to increase or decrease, the gas pressure value in the first pressure stabilizing chamber 11 is adjusted to the preset pressure value again, the stable pressure supply of the pressure stabilizing device 7 is realized, and the stable working state of the pressure stabilizing device 7 under different environments is ensured.

[0075] Further, in order to cope with the influence of gas pressure, the existing ion mobility spectrometer generally uses standard substances for reduced mobility calibration. However, the reduced mobility calibration based on standard substances can only calibrate the influence of gas pressure on mobility, and cannot correct the influence of gas flow rate change caused by gas pressure change, resulting in limited detection accuracy. The speed regulating device 13 and the first pressure detection device 2 in the embodiment use common speed regulating pumps and gas pressure sensors, and the speed accuracy of the speed regulating pump and the detection accuracy of the gas pressure sensor can improve the pressure stability accuracy of the device. Compared with the prior art, such as the commonly used EPC controller 3, which detects the pressure at the rear end of the valve by setting an electrically controlled throttle valve with gas pressure feedback, and combines a PID algorithm to complete the pressure control at the rear end of the valve to realize the adjustment of the output pressure, the adjustment accuracy is about 10kPa. However, in some high-precision detection instruments, such as high-resolution ion mobility spectrometers, the accuracy needs to be better than 0.5kPa. In the embodiment, high-precision speed regulating pumps and first pressure detection devices 2 can be selected to cooperate with each other to realize high-precision pressure regulation. Moreover, when using a speed regulating pump for regulation, the accuracy in different application scenarios can be adjusted by the pump speed of the speed regulating pump to adapt to the environment, thereby improving the adaptability of the pressure stabilizing device.

[0076] Referring to Figure 1 As shown in the figure, the speed regulating device 13 is connected to the gas inlet end of the first pressure stabilizing chamber 11, and the first gas resistance 12 is connected to the gas outlet end of the first pressure stabilizing chamber 11. Since the scene in which the embodiment is used is that the pressure required by the device to be stabilized is higher than the atmospheric pressure, the pressure in the first pressure stabilizing chamber 11 needs to be increased accordingly. By increasing the pump speed of the speed regulating device 13, the amount of gas flowing into the gas inlet end of the first pressure stabilizing chamber 11 increases, and the amount of gas flowing out of the gas outlet end of the first pressure stabilizing chamber 11 is slowed down by the action of the first gas resistance 12, thereby completing the pressure increasing process of the first pressure stabilizing chamber 11 to ensure that the pressure in the first pressure stabilizing chamber 11 is greater than the atmospheric pressure of the current environment.

[0077] It should be noted that the core structure of the first gas resistance 12 is mostly a perforated plate. In order to increase the flow in the first regulating loop 1, the type of the first gas resistance 12 can be adjusted, such as increasing the number or diameter of the holes in the perforated plate.

[0078] Referring to Figure 1As shown, the embodiment further comprises a filter 14 connected to the first regulating circuit 1 and arranged between the first air inlet end and the air inlet end of the first pressure stabilizing chamber 11 to achieve filtering and cleaning of the gas flowing into the first pressure stabilizing chamber 11. In the embodiment, the filter 14 is not arranged directly on the first output end of the first pressure stabilizing chamber 11, which has the advantage that, as the filter element of the filter 14 is used for a longer time, it will hinder the gas flowing through the filter element and form a pressure drop before and after the filter element. If the filter 14 is installed on the first output end, although it has a better filtering effect, it will cause the actual output pressure of the first output end to drop and cannot achieve the effect of matching the actual output pressure with the target pressure of the device to be pressure stabilized. In the embodiment, the filter 14 is arranged at the input end of the first pressure stabilizing chamber 11, and the pressure value detected by the first pressure detecting device 2 is the pressure value after the pressure drop of the filter 14, which can be directly fed back to the controller 3 for corresponding adjustment, further increasing the flow rate of the speed regulating device 13 to match the output pressure in the first pressure stabilizing chamber 11 with the required pressure of the device to be pressure stabilized.

[0079] It can be understood that, regarding the selection of the filter 14, the gas flow rate in the first regulating circuit 1 can be adapted to ensure the filtering effect.

[0080] Referring to Figure 1 As shown, the filter 14 is connected to the gas outlet end of the speed regulating device 13 and can filter the gas flowing through the speed regulating device 13. The purpose is that, as described above, the speed regulating device 13 in the embodiment is a speed regulating pump, and auxiliary substances such as lubricating oil need to be used in the speed regulating pump, which can pollute the gas. Therefore, the filter 14 is arranged at the gas outlet end of the speed regulating device 13 to achieve the filtering function of the lubricating oil and avoid polluting the gas in the first pressure stabilizing chamber 11.

[0081] Referring to Figure 1 As shown, the embodiment further comprises a waste gas recovery end connected between the gas inlet end of the speed regulating device 13 and the gas outlet end of the first pressure stabilizing chamber 11 and adapted to communicate with the waste gas generation end of the device to be pressure stabilized 7. In the embodiment, the mass flow rate of the speed regulating device 13 is greater than that of the waste gas recovery end. A three-way valve is arranged at the waste gas recovery end, one valve port of which is responsible for communicating with the waste gas generation end of the device to be pressure stabilized 7 and recycling the waste gas generated by the device to be pressure stabilized 7. After being filtered by the filter 14, the waste gas is used again. In order to prevent the waste gas at the waste gas recovery end from flowing back into the first pressure stabilizing chamber 11, the mass flow rate of the speed regulating device 13 needs to be greater than that of the waste gas recovery end.

[0082] Referring to Figure 1As shown, a second pressure detection device 4 is also connected to the controller 3. This second pressure detection device 4 is also a pressure transmitter. The second pressure detection device 4 is used to obtain the current atmospheric pressure when the detected current pressure data is relative pressure. As explained above, the equipment to be stabilized requires absolute pressure. When the controller 3 performs relevant adjustment calculations, it needs to calculate the absolute pressure by adding the relative pressure to the current atmospheric pressure to ensure the accuracy of the adjustment. Furthermore, the atmospheric pressure varies at different altitudes, therefore, the second pressure detection device 4 needs to perform real-time detection to ensure the accuracy of the adjustment.

[0083] Understandably, in scenarios where high accuracy is not required, it is not necessary to set up a second pressure detection device 4, and the existing air pressure data of the local environment can be directly used for calculation.

[0084] Understandably, in some implementations, when the pressure detected by the first pressure detection device 2 is absolute pressure, the second pressure detection device 4 may not be required.

[0085] like Figure 2 As shown, this embodiment provides a pressure stabilizing device, whose basic structure is basically the same as the pressure stabilizing device in Embodiment 1, so the same parts will not be described further here. It should be noted that the pressure stabilizing device in this embodiment is used in the scenario where the required pressure value of the pressure stabilizing device 7 is less than atmospheric pressure. Accordingly, this embodiment changes the connection relationship between the first air resistance 12 and the speed regulating device 13 on the first regulating circuit 1. Specifically, the first air resistance 12 is connected to the air inlet of the first pressure stabilizing chamber 11, and the speed regulating device 13 is connected to the air outlet of the first pressure stabilizing chamber 11. By increasing the pump speed of the speed regulating device 13, the amount of air flowing out of the air outlet of the first pressure stabilizing chamber 11 increases, and the amount of air flowing into the air inlet of the first pressure stabilizing chamber 11 is slowed down by the action of the first air resistance 12, thereby completing the depressurization process of the first pressure stabilizing chamber 11 to ensure that the air pressure value in the first pressure stabilizing chamber 11 is less than the current atmospheric pressure, thereby achieving a stable air pressure output when the required pressure value of the pressure stabilizing device 7 is less than atmospheric pressure.

[0086] like Figure 3 As shown, this embodiment provides a pressure stabilizing device, whose basic structure is basically the same as that of the pressure stabilizing device in Embodiment 1, so the same parts will not be described in detail here. It should be noted that the pressure stabilizing device in this embodiment is used in the following scenario: the required pressure value of the pressure stabilizing device 7 is close to the atmospheric pressure in the current environment. At this time, under the pressure difference between the inlet and outlet of the first buffer chamber, the speed regulating device 13 may be lower than the minimum pump speed and cannot operate stably. At this time, a second regulating circuit 5 needs to be set up. The function of the second regulating circuit 5 is to first depressurize the gas in the current environment, and then introduce the gas with a pressure lower than atmospheric pressure into the first regulating circuit 1.

[0087] Referring to Figure 3 As shown, the second regulating circuit 5 comprises a second pressure stabilizing chamber 51 connected thereto, the second pressure stabilizing chamber 51 has a second output end for supplying gas to the outside, the second output end is in communication with the first gas inlet end to realize the guiding of low pressure gas in the second regulating circuit 5 to the first regulating circuit 1, and the structure of the second output end can be a common valve joint.

[0088] Further, the second regulating circuit 5 further comprises a first pump body 52 connected to the gas outlet end of the second pressure stabilizing chamber 51, the first pump body 52 can be a common air pump; a second gas resistance 53 connected to the gas inlet end of the second pressure stabilizing chamber 51; and a second gas inlet end provided between the first pump body 52 and the second gas resistance 53, the second gas inlet end is adapted to be in communication with the outside. The first pump body 52 and the second gas resistance 53 are connected with a second valve 54, the second valve 54 is a three-way valve, and one valve port of the second valve 54 is configured as the second gas inlet end.

[0089] It can be understood that, in operation, the first pump body 52 increases the outflow of gas in the second pressure stabilizing chamber 51, and the second gas resistance 53 limits the inflow of gas in the second pressure stabilizing chamber 51, thereby completing the pressure reduction process of the gas in the second regulating circuit 5 to facilitate the use of the first regulating circuit 1.

[0090] As shown, Figure 4 The embodiment provides a pressure stabilizing device, and the basic structure of the pressure stabilizing device is basically the same as that of the pressure stabilizing device in the embodiment 2, and therefore the same parts will not be further described here. It should be noted that the scene in which the pressure stabilizing device in the embodiment is used is that the required pressure value of the pressure stabilizing device 7 is close to the atmospheric pressure in the current environment, at this time, under the pressure difference between the gas inlet end and the gas outlet end of the first buffer chamber, the speed regulating device 13 can be lower than the minimum pump speed and cannot operate, at this time, the third regulating circuit 6 needs to be set, and the function of the second regulating circuit 5 is to first perform pressure increasing process on the gas in the current environment, and then guide the gas with a pressure higher than the atmospheric pressure into the first regulating circuit 1.

[0091] Referring to Figure 4 As shown, the third regulating circuit 6 comprises a third pressure stabilizing chamber 61 connected thereto, the third pressure stabilizing chamber 61 has a third output end for supplying gas to the outside, and the third output end is in communication with the first gas inlet end to realize the guiding of high pressure gas in the third regulating circuit 6 to the first regulating circuit 1.

[0092] Furthermore, the third regulating circuit 6 also includes: a second pump body 62 connected to the air inlet end of the third pressure regulating chamber 61; a third air resistance 63 connected to the air outlet end of the third pressure regulating chamber 61; and a third air inlet end disposed between the second pump body 62 and the third air resistance 63, the third air inlet end being adapted to connect to the outside. A third valve 64 is connected between the second pump body 62 and the third air resistance 63, one valve port of the third valve 64 being configured as the third air inlet end.

[0093] Understandably, when the third regulating circuit 6 is working, the second pump body 62 increases the gas outflow in the third pressure stabilizing chamber 61, and the third gas resistance 63 restricts the gas inflow in the third pressure stabilizing chamber 61, thereby completing the depressurization process of the gas in the third regulating circuit 6 to facilitate the use of the first regulating circuit 1.

[0094] like Figure 5 As shown, this embodiment provides a pressure stabilizing device, the basic structure of which includes the pressure stabilizing device in Embodiment 1 and the third regulating loop 6 in Embodiment 4. It should be noted that the pressure stabilizing device in this embodiment is used in the following scenario: the air pressure in the environment where the pressure stabilizing device 7 is used is extremely low, and it needs to be pressurized by the third regulating loop 6, and then pressurized again by the pressure stabilizing device in Embodiment 1 to reach the pressure value required by the pressure stabilizing device 7.

[0095] like Figure 6 As shown, this embodiment provides a pressure stabilizing device, the basic structure of which includes the pressure stabilizing device in embodiment 2 and the second regulating loop 5 in embodiment 3. It should be noted that the pressure stabilizing device in this embodiment is used in the following scenario: the air pressure in the environment where the pressure stabilizing device 7 is used is extremely high, and it needs to be depressurized by the second regulating loop 5, and then depressurized again by the pressure stabilizing device in embodiment 2 to reach the pressure value required by the pressure stabilizing device 7.

[0096] This embodiment provides a voltage stabilization system, including: multiple voltage stabilizing devices as described in the above embodiment; wherein, multiple first pressure detection devices feed back multiple current pressure data to the same controller.

[0097] In the prior art scheme of controlling an electric throttle valve using an EPC controller as described in Embodiment 1 above, each EPC unit uses an independent controller. Using multiple independent control units in the same system may cause air pressure oscillations. In this embodiment, a single controller can simultaneously control multiple first pressure detection devices, enabling data processing and effectively avoiding the problem of air pressure oscillations.

[0098] Specifically, see Figure 7As shown, the controller in this embodiment is a multi-channel controller, including an analog-to-digital converter, a microcontroller, a digital-to-analog converter, and a memory. The analog-to-digital converter is used to convert the analog signal of the pressure value obtained by the first pressure detection device into a digital signal and upload it. The microcontroller receives the digital signal uploaded from the analog-to-digital converter, runs an algorithm using the calibration parameters stored in the memory, and outputs the speed regulation parameter of each pump to the drive circuit in the digital-to-analog converter and the speed regulation pump, finally controlling the speed regulation pump to work at an appropriate speed. The output gas pressure of the first pressure regulating chamber reaches the predetermined value. The memory can be a memory chip such as a non-volatile memory chip such as EEPROM or a memory chip with a backup power supply such as SRAM.

[0099] As Figure 8 The pressure regulating control method corresponding to the pressure regulating system in this embodiment can include the following steps.

[0100] In step S1, the current pressure data of a plurality of first pressure regulating chambers is obtained. In this step, the first pressure detection device is used to obtain the current pressure data in different first pressure regulating chambers in the pressure regulating system and can be uploaded to the controller. The controller is provided with an analog-to-digital converter responsible for converting the analog signal uploaded by the first pressure detection device into a digital signal to facilitate subsequent calculation and processing.

[0101] It should be noted that the first pressure detection device in this embodiment is a common pressure transmitter, and the pressure data detected by the first pressure detection device is an absolute pressure value.

[0102] In step S2, according to the obtained plurality of current pressure data, the same controller is used to calculate the difference between the plurality of current pressure data and the preset pressure of the first pressure regulating chamber; the microcontroller in the controller receives the digital signal sent by the analog-to-digital converter, and calls the preset pressure value in the corresponding first pressure regulating chamber in the memory, runs the relevant algorithm program, and calculates the difference between the current pressure data and the preset pressure of the first pressure regulating chamber.

[0103] In step S3, the adjustment parameter of the speed regulation device is calculated according to the difference value, and the pressure regulating parameter required by the speed regulation device for pressure regulation is calculated by the controller according to the pressure difference calculated in S2 and uploaded to the digital-to-analog converter to facilitate the speed regulation device to read and work. The speed regulation device in this embodiment is a speed regulation pump, and the pressure regulating parameter mainly includes adjusting the pump speed of the speed regulation pump.

[0104] In step S4, the gas flow rate in the first regulating loop is adjusted according to the adjustment parameter. The digital-to-analog converter uploads the relevant parameters to the control circuit in the speed regulation pump to adjust the pump speed of the speed regulation pump. By adjusting the pump speed, the pressure difference across the first gas resistance is changed, thereby adjusting the gas pressure in the first pressure regulating chamber.

[0105] Referring toFigure 9 As shown, the controller in this embodiment is a multi-channel controller, and before S1, it further includes:

[0106] S11: Set a first counting mark for multiple first pressure detection devices; set a second counting mark for the controller's communication channel.

[0107] In the initial operation phase of the pressure stabilization system in this embodiment, the controller first initializes the aforementioned hardware devices, reads the preliminary air pressure value, and causes the speed regulating device to run at a preset initial speed.

[0108] Furthermore, a counter is used in the controller to mark the channels in the multi-channel controller and the first pressure detection device in the voltage regulation system. For example, the first pressure detection device in the first voltage regulator in the voltage regulation system is marked as 1, and the corresponding channel controlling it is also marked as 1, so as to establish a one-to-one correspondence between the two.

[0109] See Figure 10 As shown, the voltage regulation method in this embodiment further includes the following steps before S3:

[0110] S31: Determine if the first counter is equal to the second counter; if the first counter is equal to the second counter, execute S3. When the first counter is equal to the second counter, it means that the current pressure data corresponds to the corresponding channel in the controller, and the current pressure data can be processed through this channel in S3.

[0111] If the first counter is not equal to the second counter, then S3 is delayed until the counter is incremented by 1, and then the system checks again whether the first counter is equal to the second counter. This setting ensures that each channel in the controller requires the corresponding first pressure detection device to activate, and the unactivated steps are delayed, ensuring the accurate measurement of the differential value of the pressure change and contributing to the stability of the system.

[0112] See Figure 11 As shown, in some embodiments, the voltage stabilizing device further includes a second pressure detection device connected to the controller, and S1 further includes the following steps:

[0113] S101: Determine whether the pressure data obtained by the first pressure detection device is absolute air pressure; the current pressure value type can be determined according to the type of the first pressure detection device.

[0114] S102: If no, then control the second pressure detection device to acquire the atmospheric pressure of the current environment. As set forth above, what is needed in the pressure stabilizing device is the absolute pressure, and when the controller performs the relevant adjustment calculation, the absolute pressure needs to be calculated according to the relative pressure plus the atmospheric pressure of the current environment to ensure the accuracy of the adjustment. And in different altitudes, the value of the atmospheric pressure is not the same, so the second pressure detection device 4 needs to be detected in real time to ensure the accuracy of the adjustment.

[0115] The flow diagrams and the block diagrams in the drawings are illustrations of possible architectures, functions, and operations for systems, methods, and computer program products according to various embodiments of the present disclosure. In this regard, each block in the flow diagrams or block diagrams can represent a module, a segment, or a portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that in some alternative implementations, the functions noted in the blocks can occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and / or flow diagrams, and combinations thereof, can be implemented by special purpose hardware-based systems that perform the specified functions or operations, or combinations of special purpose hardware and computer instructions.

[0116] Those skilled in the art will understand that features of various embodiments and / or claims of the present disclosure can be combined or / and integrated, even if such combinations or integrations are not expressly disclosed in the present disclosure. In particular, features of various embodiments and / or claims of the present disclosure can be combined and / or integrated in various combinations and / or integrations, without departing from the spirit and teachings of the present disclosure. All such combinations and / or integrations are within the scope of the present disclosure.

[0117] The embodiments of the present disclosure are described above. However, these embodiments are only for illustrative purposes, and are not intended to limit the scope of the present disclosure. Although each embodiment is described above separately, this does not mean that the measures in each embodiment cannot be used advantageously in combination. The scope of the present disclosure is defined by the appended claims and their equivalents. Without departing from the scope of the present disclosure, those skilled in the art can make various substitutions and modifications, which should all fall within the scope of the present disclosure.

Claims

1. A voltage stabilizing device, characterized in that, include: A first regulating loop is configured in a closed loop, the first regulating loop comprising: A first pressure-stabilizing chamber is connected thereto, and the first pressure-stabilizing chamber has a first output terminal for supplying gas to the outside. A speed regulating device and a first air resistance are connected to both ends of the first pressure regulating chamber; the speed regulating device is used to adjust the gas flow rate in the first regulating circuit; and The first air inlet is disposed between the speed regulating device and the first air resistance, and the first air inlet is connected to the outside atmosphere. The voltage stabilizing device also includes: A first pressure detection device is installed on the first pressure stabilizing chamber to acquire the current pressure data inside the first pressure stabilizing chamber in real time and to feed back the current pressure data; and The controller is configured to: receive current pressure data fed back by the first pressure detection device, calculate the pressure difference between the current pressure data and a preset pressure in the first pressure stabilizing chamber, and control the speed regulating device to adjust the air pressure value in the first pressure stabilizing chamber based on the pressure difference. The speed regulating device is configured as a speed regulating pump, and the controller controls the speed of the speed regulating pump to regulate the gas flow rate in the first regulating circuit.

2. The voltage stabilizing device according to claim 1, characterized in that, The speed regulating device is connected to the air inlet of the first pressure regulating chamber, and the first air resistance is connected to the air outlet of the first pressure regulating chamber.

3. The voltage stabilizing device according to claim 1, characterized in that, The first air resistance is connected to the air inlet of the first pressure stabilizing chamber, and the speed regulating device is connected to the air outlet of the first pressure stabilizing chamber.

4. The voltage stabilizing device according to claim 2 or 3, characterized in that, It also includes a second regulating loop configured in a closed loop, the second regulating loop comprising: A second pressure-stabilizing chamber is connected thereto, and the second pressure-stabilizing chamber has a second output end for supplying gas to the outside, and the second output end is connected to the first air inlet end; The first pump body is connected to the outlet end of the second pressure stabilizing chamber; A second air resistance connected to the air inlet of the second pressure regulating chamber; and A second air inlet is provided between the first pump body and the second air resistance, and the second air inlet is adapted to connect to the outside.

5. The voltage stabilizing device according to claim 2 or 3, characterized in that, It also includes a third regulating loop configured in a closed loop, the third regulating loop comprising: A third pressure-stabilizing chamber is connected thereto, the third pressure-stabilizing chamber having a third output end for supplying gas to the outside, the third output end being connected to the first air inlet end; A second pump body connected to the air inlet end of the third pressure regulating chamber; The third air resistance connected to the outlet of the third pressure-stabilizing chamber; and A third air inlet is provided between the second pump body and the third air resistance, and the third air inlet is adapted to connect to the outside.

6. The voltage stabilizing device according to claim 1, characterized in that, Also includes: A filter is connected to the first regulating circuit and is placed between the first air inlet and the air inlet of the first pressure regulating chamber.

7. The voltage stabilizing device according to claim 6, characterized in that, The filter is connected to the outlet side of the speed regulating device.

8. The voltage stabilizing device according to claim 1, characterized in that, It also includes a waste gas recovery end, which is connected between the air inlet end of the speed regulating device and the air outlet end of the first pressure stabilizing chamber, and is adapted to communicate with the waste gas generating end of the device to be pressure stabilized. The mass flow rate of the speed regulating device is greater than the mass flow rate of the waste gas recovery end.

9. The voltage stabilizing device according to claim 1, characterized in that, The controller is also connected to a second pressure detection device, which is used to: obtain the atmospheric pressure of the current environment when the detected current pressure data is a relative air pressure.

10. The voltage stabilizing device according to claim 1, characterized in that, A first valve is connected between the speed regulating device and the first air resistance, and one valve port of the first valve is configured as the first air inlet.

11. The voltage stabilizing device according to claim 4, characterized in that, A second valve is connected between the first pump body and the second air resistance, and one port of the second valve is configured as the second air inlet.

12. The voltage stabilizing device according to claim 5, characterized in that, A third valve is connected between the second pump body and the third air resistance, and one port of the third valve is configured as the third air inlet.

13. A voltage stabilizing system, characterized in that, include: Multiple voltage regulators as described in any one of claims 1-12; In this process, multiple first pressure detection devices feed back multiple current pressure data to the same controller.

14. A voltage regulation method, applicable to the voltage regulation system as described in claim 13, characterized in that, include: S1: Obtain the current pressure data of multiple first pressure stabilizing chambers; S2: Based on the acquired multiple current pressure data, the same controller is used to calculate the difference between the multiple current pressure data and the preset pressure of the first pressure stabilizing chamber; S3: Calculate the adjustment parameters of the speed regulating device based on the difference; S4: Adjust the gas flow rate in the first regulating circuit according to the regulating parameters.

15. The voltage stabilization method according to claim 14, characterized in that, The controller is a multi-channel controller, and before step S1, it further includes: A first counting mark is set for multiple first pressure detection devices; A second counter flag is set for the communication channel of the controller.

16. The voltage stabilization method according to claim 15, characterized in that, Before S3, it also includes: Determine whether the first counting marker is equal to the second counting marker; When the first counter is equal to the second counter, S3 is executed.

17. The voltage stabilization method according to claim 16, characterized in that, If the first count flag is not equal to the second count flag, then the execution of S3 is delayed.

18. The voltage stabilization method according to claim 14, characterized in that, The voltage stabilizing device further includes a second pressure detection device connected to the controller, and S1 includes: Determine whether the pressure data acquired by the first pressure detection device is absolute air pressure; If not, the second pressure detection device is controlled to obtain the current atmospheric pressure.

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