A pressure make-up controller for high altitude in-line meters

Abstract

This utility model discloses a pressure boosting controller for online instruments suitable for high-altitude environments, comprising: a pressure storage tank, the interior of which has a sealed cavity with multiple sealing threaded joints on the end face for connecting to the gas path system of the online water quality analyzer, ensuring the safe sealing of all sealed bottles and peristaltic pumps of the online water quality analyzer; the vents of the online water quality analyzer are all connected to the pressure storage tank; and the other end face of the cavity is provided with internal threads. This utility model relates to the technical field of accessories for online water quality analyzers. This utility model connects the original piping system of the online water quality analyzer to the pressure storage tank, forming a relatively sealed space. A pressure sensor monitors the pressure of the pressure storage tank in real time, and the booster pump is started and stopped according to the working requirements of the online water quality analyzer and the set upper and lower pressure limits. This simulates a low-altitude working environment for the online instrument, providing a basic condition for its stable operation.

Description

Technical Field

[0001] This utility model relates to the technical field of accessories for online water quality analyzers, specifically a pressure boosting controller suitable for high-altitude environments in online instruments. Background Technology

[0002] In the environmental protection industry, water samples need to be taken and analyzed regularly using online water quality analyzers. By monitoring and summarizing this dataset, effective support can be provided for environmental protection. However, when online water quality analyzers need to be used in high-altitude environments, the low atmospheric pressure at high altitudes can cause the analyzers to be affected by changes in air pressure, which can affect the accuracy of the detection data and make them unable to work stably.

[0003] Therefore, this utility model provides a pressure compensation controller suitable for high-altitude applications in online instruments to solve the above-mentioned problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a pressure compensation controller suitable for high-altitude applications in online instruments, thus solving the aforementioned problems.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a pressure compensation controller suitable for high-altitude environments in online instruments, comprising:

[0006] The pressure storage tank has a sealed cavity inside. The end face of the cavity is provided with multiple sealing threaded joints for connecting to the gas circuit system of the online water quality analyzer, ensuring the safe sealing of all the sealed bottles and peristaltic pumps of the online water quality analyzer. The vent holes of the online water quality analyzer are all connected to the pressure storage tank. The other end face of the cavity is provided with internal threads.

[0007] The monitoring component is used to monitor the actual pressure inside the pressure storage tank in real time;

[0008] A pressure regulating component is used in conjunction with a monitoring component to regulate the internal pressure of the pressure storage tank.

[0009] Preferably, the monitoring component includes:

[0010] The MCU controller has two serial communication RS ports and one switch output pin configured on its PGIO, one of which is connected to the control components of the online water quality analyzer.

[0011] A pressure sensor is installed at the internal thread. The pressure sensor is equipped with an RS communication interface, and another RS ​​communication port is connected to the RS communication interface on the pressure sensor to transmit the pressure value in the pressure storage chamber to the MCU controller.

[0012] Preferably, the pressure regulating component is a booster pump, and the output end of the booster pump is connected to one of the sealed threaded joints via an air pipe.

[0013] Preferably, the volume of the pressure storage chamber is greater than 200 mL.

[0014] Preferably, there are 12 sealing threaded joints, each with a diameter of one-quarter inch and 28 threads per inch of sealing threaded joint.

[0015] Preferably, each of the sealed threaded joints is provided with a plug.

[0016] Preferably, the booster pump is a miniature diaphragm pump driven by a brushless motor, and the booster pump (4) has an air volume of 8L / min and a maximum air pressure of 0.1Mpa.

[0017] Preferably, an NMOS transistor is provided between the brushless motor and the switch output pin to drive the brushless motor. Beneficial effects

[0018] This invention provides a pressure compensation controller for online instruments suitable for high-altitude environments. Compared with existing technologies, it has the following advantages:

[0019] The pressure booster controller in this online instrument, suitable for high-altitude applications, connects the existing piping system of the online water quality analyzer to a pressure storage tank, forming a relatively sealed space. Pressure sensors monitor the pressure in the tank in real time, and the booster pump is started or stopped based on the operating requirements of the online water quality analyzer and the set upper and lower pressure limits. This simulates a low-altitude working environment for the online instrument, providing a foundation for its stable operation. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the present invention.

[0021] In the diagram: 1. Pressure storage tank; 2. MCU controller; 3. Pressure sensor; 4. Booster pump. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1 A pressure compensation controller for high-altitude applications in online instruments, comprising:

[0024] Pressure storage tank 1 has a sealed cavity inside. Multiple sealing threaded joints are provided on the end face of the cavity for connecting to the gas circuit system on the online water quality analyzer to ensure the safe sealing of all sealed bottles and peristaltic pumps of the online water quality analyzer. The vent holes of the online water quality analyzer are all connected to pressure storage tank 1. The other end face of the cavity is provided with internal threads.

[0025] The monitoring component is used to monitor the actual pressure inside the pressure storage tank 1 in real time;

[0026] The pressure regulating component is used in conjunction with the monitoring component to regulate the internal pressure of the pressure storage tank 1;

[0027] In this embodiment, the volume of the pressure storage tank 1 chamber is greater than 200mL, which can simulate a low-altitude working environment for the online water quality analyzer for a long time, providing a basic condition for its stable operation.

[0028] More specifically, the pressure storage tank 1 can be made of aluminum alloy. Due to the material properties of the pressure storage tank 1, it can be adapted to use in high-altitude environments, making the whole system more stable.

[0029] In this embodiment, there are 12 sealing threaded joints;

[0030] More specifically, each sealing threaded connector is sized as UNT1 / 4-28. Through the specifications of the sealing threaded connector, it can be adapted to all volumetric bottles and peristaltic pumps of the online water quality analyzer, thereby ensuring the stability of the connection between the volumetric bottles, peristaltic pumps and the sealing threaded connector.

[0031] In this embodiment, a plug is provided at each sealing threaded joint;

[0032] More specifically, by setting the plug, the threaded joint can be sealed when it is not in use, thus preventing gas from leaking out of the pressure tank 1;

[0033] Furthermore, the plug has a threaded structure. When installing the plug, first align the thread of the plug with the thread of the sealing threaded joint, then rotate the plug to screw it in and seal the threaded joint.

[0034] In this embodiment, the monitoring component includes:

[0035] MCU controller 2 has two RS485 serial communication ports and one digital output pin configured on its PGIO. One of the RS485 serial communication ports is connected to the control components of the online water quality analyzer.

[0036] Pressure sensor 3 is installed on the internal thread. Pressure sensor 3 is equipped with an RS485 communication interface, and another serial communication RS485 port is connected to the RS485 communication interface on pressure sensor 3 to transmit the pressure value in the cavity of pressure storage tank 1 to MCU controller 2.

[0037] In this embodiment, the MCU controller 2 is a microcontroller unit that uses an STM32 core. It is an integrated circuit and uses the MODBUS-RTU protocol to obtain the working status of the online water quality analyzer and the actual pressure of the pressure tank 1 in real time.

[0038] More specifically, the digital output pin is used to output a high-level or low-level state to control the on / off state of the brushless motor circuit.

[0039] More specifically, when used in high-altitude environments, the parameters set in MCU controller 2 are: lower pressure threshold = 10 kPa, upper pressure threshold = 30 kPa;

[0040] In this embodiment, the pressure sensor 3 has a measurement range of -100~100kPa and uses the MODBUS-RTU communication protocol.

[0041] In this embodiment, the pressure regulating component is a booster pump 4, and the output end of the booster pump 4 is connected to one of the sealed threaded joints through an air pipe;

[0042] In this embodiment, the booster pump 4 is a miniature diaphragm pump driven by a brushless motor. The air volume of the booster pump 4 is 8L / min, and the maximum air pressure is 0.1Mpa.

[0043] More specifically, a miniature diaphragm pump is a small, lightweight positive displacement pump. Its core component is a flexible diaphragm that reciprocates through mechanical or electromagnetic drive. When the diaphragm is pulled backward, a negative pressure is created on the pump's suction side, opening the suction valve and drawing gas into the pump chamber. When the diaphragm is pushed forward, the suction valve closes, the discharge valve opens, and the gas is expelled from the pump chamber. It has excellent self-priming capability and is easier to install and carry.

[0044] Furthermore, the input end of the miniature diaphragm pump is connected to the atmosphere, and a filter screen is fixedly connected inside the miniature diaphragm pump. The filter screen can prevent impurities in the atmosphere from entering the diaphragm pump.

[0045] In this embodiment, an NMOS transistor is provided between the brushless motor and the digital output pin to drive the brushless motor.

[0046] More specifically, an NMOS transistor is an electronic component used to amplify or switch electronic signals. In this embodiment, the MCU controller 2 enables or disables the power supply to the brushless motor by controlling the digital output pin and the NMOS transistor. When the digital output pin outputs a high level, the NMOS transistor is turned on, allowing current to flow to the brushless motor and enabling it to operate.

[0047] When the digital output pin outputs a low level, the NMOS transistor is turned off, cutting off the current and stopping the brushless motor, thereby controlling the start and stop of the motor.

[0048] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0049] The working principle is as follows: Before each quantitative process is started, the pressure sensor 3 obtains the pressure in the pressure storage tank 1 and determines whether the pressure in the pressure storage tank 1 is greater than the set lower pressure limit. If the pressure is insufficient, the booster pump 4 is started to compress the rarefied air in the atmosphere into the pressure storage tank 1 until the pressure is greater than the set upper pressure limit. Then the water quality online analyzer continues to execute the quantitative process. If the pressure is greater than the set lower limit before the quantitative process is started, the MCU controller 2 controls the water quality online analyzer to continue to execute the quantitative process.

[0050] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0051] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pressure make-up controller for use in altimeter at high altitudes, characterized in that: include: The pressure storage pack (1) has a sealed cavity inside. The cavity end face is provided with multiple sealed threaded joints for connecting to the gas path system on the online water quality analyzer, ensuring that all the sealed bottles and peristaltic pumps of the online water quality analyzer are safely sealed. The air vents of the online water quality analyzer are all connected to the pressure storage pack (1). The other end face of the cavity is provided with internal threads. A monitoring component is used to monitor the actual pressure inside the pressure storage tank (1) in real time; The pressure regulating component is used in conjunction with the monitoring component to regulate the internal pressure of the pressure storage tank (1).

2. The pressure compensator for use in an online meter at high altitudes according to claim 1, wherein: The monitoring components include: The MCU controller (2) is equipped with two RS485 serial communication ports and a switch output pin on its PGIO. One of the RS485 serial communication ports is connected to the control components of the online water quality analyzer. Pressure sensor (3) is installed on the internal thread. The pressure sensor (3) is equipped with an RS485 communication interface, and another RS485 serial communication port is connected to the RS485 communication interface on the pressure sensor (3) to transmit the pressure value in the cavity of the pressure storage bag (1) to the MCU controller (2).

3. The pressure compensator for use in an online meter at high altitudes as claimed in claim 2, wherein: The pressure regulating component is a booster pump (4), and the output end of the booster pump (4) is connected to one of the sealed threaded joints through an air pipe.

4. The pressure compensator for use in an online meter at high altitudes as claimed in claim 1, wherein: The volume of the pressure storage bag (1) is greater than 200 mL.

5. The pressure compensator for use in an online meter at high altitudes as claimed in claim 1, wherein: There are 12 sealing threaded joints.

6. The pressure compensator for use in an online meter at high altitudes as claimed in claim 5 wherein: Each of the aforementioned sealing threaded joints is provided with a plug.

7. A pressure compensation controller suitable for high-altitude applications in an online instrument according to claim 3, characterized in that: The booster pump (4) is a miniature diaphragm pump driven by a brushless motor. The air volume of the booster pump (4) is 8L / min and the maximum air pressure is 0.1Mpa.

8. A pressure compensation controller suitable for high-altitude applications in an online instrument according to claim 7, characterized in that: An NMOS transistor is installed between the brushless motor and the digital output pin to drive the brushless motor.

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