Pressure transmitter with self-calibration function

Abstract

The utility model provides a pressure transmitter with a self-calibration function, and belongs to the technical field of pressure transmitters. Comprising a base, a main pressure transmitter is installed on the base, an auxiliary pressure transmitter and a pressure pump are further installed on the base, the output end of the pressure pump is connected with a pressure calibration tube, and the pressure calibration tube is connected with the input port of the main pressure transmitter and the input port of the auxiliary pressure transmitter. A pressure controller is fixed to the pressure pump and connected with the output end of the main pressure transmitter and the output end of the auxiliary pressure transmitter, a wireless transmission plate used for being connected into a calibration platform is installed on the top of the pressure controller, and the pressure controller is electrically connected with a micro calibration terminal. And the micro calibration terminal is fixed on the main pressure transmitter. The device can perform self-calibration detection adjustment, and is convenient and reliable to use.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure transmitters, and particularly to a pressure transmitter with a self-calibration function. Background Art

[0002] A pressure transmitter is a device that converts a pressure signal into a standardized electrical signal (such as 4-20 mA) that can be transmitted, and is widely used in the measurement and control of pressure in the field of industrial automation. It can measure the pressure of media such as gases, liquids, or vapors, and convert these pressure signals into electrical signals for easy remote monitoring and integration into control systems.

[0003] However, when existing pressure transmitters are in use, they generally do not have a self-calibration function, resulting in the need for manual operation by staff during detection and calibration, which greatly affects the subsequent detection efficiency.

[0004] Therefore, this application provides a pressure transmitter with a self-calibration function to solve the above technical problems. Content of the Utility Model

[0005] The technical problem to be solved by the utility model is to provide a pressure transmitter with a self-calibration function to solve the problem that existing pressure transmitters generally do not have a self-calibration function when in use, resulting in the need for manual operation by staff during detection and calibration, which greatly affects the subsequent detection efficiency.

[0006] To solve the above technical problems, the utility model provides the following technical solutions:

[0007] A pressure transmitter with a self-calibration function includes a base. A main pressure transmitter is installed on the base. A secondary pressure transmitter and a pressure pump are also installed on the base. The output end of the pressure pump is connected to a pressure calibration tube. The pressure calibration tube is connected to the input ports of the main pressure transmitter and the secondary pressure transmitter. A pressure controller is fixed on the pressure pump. The pressure controller is connected to the output ends of the main pressure transmitter and the secondary pressure transmitter. A wireless transmission board for accessing a calibration platform is installed on the top of the pressure controller. The pressure controller is electrically connected to a micro calibration terminal, and the micro calibration terminal is fixed on the main pressure transmitter.

[0008] Optionally, the wireless transmission board is rotatably installed on the top of the pressure controller. One end of the upper end surface of the wireless transmission board is fixed with an antenna, and a signal strengthening pot is installed around the antenna.

[0009] Optionally, a rotating seat is fixed at one end of the lower end face of the wireless transmission board. The rotating seat is rotatably installed on the top of the pressure controller, and the inside of the rotating seat is hollow. The antenna is connected with a communication data line, and the communication data line extends into the pressure controller from the lower port of the rotating seat to form an electrical connection.

[0010] Optionally, a fixed flange seat is fixed at the bottom of the main pressure transmitter and is installed on the upper end face of the base.

[0011] Optionally, at least two input ends and output ends are provided for both the main pressure transmitter and the sub-pressure transmitter. The output end of the main pressure transmitter includes a first input interface and a second input interface, and solenoid valves are installed on both the first input interface and the second input interface.

[0012] Optionally, the end of the pressure calibration tube away from the pressure pump is connected to the second input interface.

[0013] Optionally, fixing ears are symmetrically fixed at both ends of the bottom of the base, and a plurality of fixing holes for cooperating with bolts for installation are provided on the fixing ears.

[0014] Compared with the prior art, the utility model has at least the following beneficial effects:

[0015] In the above solution, thanks to the settings of the sub-pressure transmitter, the pressure pump and the pressure controller, the sub-pressure transmitter can be used as a standard pressure transmitter to form a comparison with the main pressure transmitter. The pressure pump is used to provide a known accurate pressure, and the wireless transmission board on the pressure controller is used to transmit the output values of the main pressure transmitter and the sub-pressure transmitter to the calibration platform in the cloud for comparison. By comparing the outputs of the two transmitters, the error of the main pressure transmitter can be determined, and the main pressure transmitter can be compensated and calibrated through the micro calibration terminal to achieve self-calibration, greatly improving the working efficiency of the staff during the later calibration and measurement of the pressure transmitter.

[0016] In the above solution, thanks to the cooperation of the wireless transmission board, the antenna and the signal strengthening pot, the signal strengthening pot can be used to strengthen the wireless signal intensity, which is beneficial to ensure the remote control use of the device or the use in cooperation with the cloud calibration platform.

[0017] In summary, the device can perform self-calibration detection and adjustment, and is convenient and reliable to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings incorporated herein and constituting a part of the specification illustrate embodiments of the utility model and, together with the specification, are further used to explain the principles of the utility model and enable those skilled in the relevant art to implement and use the utility model.

[0019] Figure 1 It is a structural schematic diagram of a pressure transmitter with a self - calibration function;

[0020] Figure 2 For the pressure transmitter with a self - calibration function Figure 1 An enlarged schematic diagram of the structure at position A in it;

[0021] Figure 3 It is a structural schematic diagram of the wireless transmission board of a pressure transmitter with a self - calibration function;

[0022] Figure 4 For the pressure transmitter with a self - calibration function Figure 1 An enlarged schematic diagram of the structure at position B in it.

[0023] [Reference numerals]

[0024] 1. Base; 101. Fixed ear; 102. Fixed hole; 2. Main pressure transmitter; 201. First input interface; 202. Second input interface; 203. Solenoid valve; 204. Fixed flange seat; 3. Sub - pressure transmitter; 4. Pressurizing pump; 401. Pressure calibration tube; 5. Pressure controller; 501. Control panel; 6. Wireless transmission board; 601. Antenna; 602. Signal strengthening pot; 603. Rotating seat; 604. Communication data line; 7. Micro - calibration terminal.

[0025] As shown in the figure, in order to clearly show the structure of the embodiments of the present invention, specific structures and devices are marked in the figure, but this is only for schematic needs and is not intended to limit the present invention to this specific structure, device and environment. According to specific needs, those of ordinary skill in the art can adjust or modify these devices and environments. Detailed implementation manners

[0026] The following combines the accompanying drawings and specific embodiments to describe in detail the pressure transmitter with a self - calibration function provided by the present invention. At the same time, it should be noted here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments. For some well - known technologies, those skilled in the art can also adopt other alternative methods for implementation; and the accompanying drawings are only for more specifically describing the embodiments and are not intended to specifically limit the present invention.

[0027] It should be noted that in the specification, the mention of "an embodiment", "embodiments", "exemplary embodiments", "some embodiments", etc. indicates that the described embodiments may include specific features, structures or characteristics, but not necessarily every embodiment includes such specific features, structures or characteristics. Additionally, when combining embodiments to describe a specific feature, structure or characteristic, the implementation of such feature, structure or characteristic in combination with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the relevant art.

[0028] Generally, terms can be understood at least in part from their use in context. For example, at least in part depending on the context, the term "one or more" as used herein can be used to describe any feature, structure or characteristic in a singular sense, or can be used to describe a combination of features, structures or characteristics in a plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey a set of exclusive factors, but rather can alternatively, at least in part depending on the context, allow for the existence of other factors that are not necessarily explicitly described.

[0029] It can be understood that the meanings of "on...", "above...", and "over..." in the present utility model should be interpreted in the broadest manner, such that "on..." not only means "directly on" something, but also includes the meaning of being "on" something with intervening features or layers therebetween, and "above..." or "over..." not only means "above" or "over" something, but also can include the meaning of being "above" or "over" something with no intervening features or layers therebetween.

[0030] Furthermore, spatial relative terms such as "under...", "below...", "lower", "above...", "upper", etc. are used herein for convenience of description to describe the relationship of one element or feature to another or other elements or features, as shown in the drawings. The spatial relative terms are intended to cover different orientations in the use or operation of the device other than the orientation depicted in the drawings. The device can be oriented in other ways, and the spatial relative descriptive terms used herein can be correspondingly interpreted similarly.

[0031] As Figures 1-4 shown, an embodiment of the present utility model provides a pressure transmitter with a self-calibration function, including a base 1. At both ends of the bottom of the base 1, fixing ears 101 are symmetrically fixed. A plurality of fixing holes 102 are formed in the fixing ears 101 for installation in cooperation with bolts.

[0032] A main pressure transmitter 2, a secondary pressure transmitter 3, and a pressure pump 4 are installed on the base 1. Among them, the secondary pressure transmitter 3 is exactly the same as the main pressure transmitter 2, and the secondary pressure transmitter 3 is a known standard pressure transmitter. A fixed flange seat 204 is fixed at the bottom of the main pressure transmitter 2 and is installed on the upper end face of the base 1. At least two input ends and output ends are provided for both the main pressure transmitter 2 and the secondary pressure transmitter 3. The output end of the main pressure transmitter 2 includes a first input interface 201 and a second input interface 202, and solenoid valves 203 are installed on both the first input interface 201 and the second input interface 202.

[0033] Meanwhile, the output end of the pressure pump 4 is connected to a pressure calibration pipe 401. The pressure calibration pipe 401 is connected to the input ports of the main pressure transmitter 2 and the secondary pressure transmitter 3. In this embodiment, one end of the pressure calibration pipe 401 away from the pressure pump 4 is connected to the second input interface 202.

[0034] In addition, a pressure controller 5 is fixed on the pressure pump 4. The pressure controller 5 is connected to the output ends of the main pressure transmitter 2 and the secondary pressure transmitter 3. A wireless transmission board 6 for accessing the calibration platform is installed on the top of the pressure controller 5. The pressure controller 5 is electrically connected to a micro calibration terminal 7, and the micro calibration terminal 7 is fixed on the main pressure transmitter 2.

[0035] Specifically, as Figure 2 shown in Figure 3 the wireless transmission board 6 is rotatably installed on the top of the pressure controller 5. One end of the upper end face of the wireless transmission board 6 is fixed with an antenna 601, and a signal strengthening pot 602 is installed around the antenna 601. One end of the lower end face of the wireless transmission board 6 is fixed with a rotating seat 603. The rotating seat 603 is rotatably installed on the top of the pressure controller 5. The rotating seat 603 is hollow inside. The antenna 601 is connected to a communication data line 604, and the communication data line 604 extends into the pressure controller 5 from the lower port of the rotating seat 603 to form an electrical connection.

[0036] In this embodiment, the pressure controller 5 is also equipped with a control panel 501. And the pressure controller 5 starts from 0 KPa and takes a calibration point every 50 KPa according to the range of the main pressure transmitter 2. According to the size of the calibration point, the pressure controller 5 controls the pressurizing pump 4 to pressurize the main pressure transmitter 2 and the auxiliary pressure transmitter 3. Specifically, during implementation, this pressurizing process adopts PID control regulation. In addition, the calibration pressurizing system composed of this pressurizing pump 4 and the pressure controller 5 is also equipped with a pressure relief valve to ensure that the equipment returns to its original state after calibration. For other parts not described in detail in this embodiment, existing technical means in this field can be adopted and will not be elaborated here. Among them, the micro calibration terminal 7 can also integrate an intelligent communication protocol, such as HART, so as to communicate with the intelligent transmitter and realize an automated calibration process.

[0037] The working principle provided by the present utility model for this pressure transmitter with a self-calibration function is as follows: when in use, it is connected to the pipeline system through the first input interface 201. When performing self-calibration, the auxiliary pressure transmitter 3 is used as a standard pressure transmitter to form a comparison with the main pressure transmitter 2, and the pressure controller 5 controls the pressurizing pump 4 to simultaneously provide known accurate pressures to the main pressure transmitter 2 and the auxiliary pressure transmitter 3 (at this time, the solenoid valve 203 on the second input interface 202 is opened, while the solenoid valve 203 on the first input interface 201 is closed).

[0038] Subsequently, the output values of the main pressure transmitter 2 and the auxiliary pressure transmitter 3 are transmitted to the calibration platform in the cloud through the wireless transmission board 6 on the pressure controller 5 for comparison. By comparing the outputs of the two transmitters, the error of the main pressure transmitter 2 is determined, and the main pressure transmitter 2 is compensated and calibrated through the micro calibration terminal 7 to achieve self-calibration, greatly improving the working efficiency of the staff during the later calibration and measurement of the pressure transmitter.

[0039] Meanwhile, the signal strengthening pot 602 can be used to strengthen the wireless signal intensity, which is conducive to ensuring the remote control use of this device or its use in cooperation with the cloud calibration platform.

[0040] In summary, this device can perform self-calibration detection and adjustment, and is convenient and reliable to use.

[0041] The present utility model covers any substitutions, modifications, equivalent methods, and solutions made within the essence and scope of the present utility model. For the public to have a thorough understanding of the present utility model, specific details are described in detail in the following preferred embodiments of the present utility model. However, those skilled in the art can fully understand the present utility model without the description of these details. Additionally, to avoid unnecessary confusion to the essence of the present utility model, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0042] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present utility model.

Claims

1. A pressure transmitter with a self-calibration function, comprising a base (1), and a main pressure transmitter (2) is installed on the base (1), characterized in that, A secondary pressure transmitter (3) and a pressure pump (4) are also installed on the base (1). The output end of the pressure pump (4) is connected to a pressure calibration pipe (401). The pressure calibration pipe (401) is connected to the input ports of the main pressure transmitter (2) and the secondary pressure transmitter (3). A pressure controller (5) is fixed on the pressure pump (4). The pressure controller (5) is connected to the output ends of the main pressure transmitter (2) and the secondary pressure transmitter (3). A wireless transmission board (6) for accessing the calibration platform is installed on the top of the pressure controller (5). The pressure controller (5) is electrically connected to a micro calibration terminal (7). The micro calibration terminal (7) is fixed on the main pressure transmitter (2).

2. The pressure transmitter with a self-calibration function according to claim 1, characterized in that, The wireless transmission board (6) is rotatably installed on the top of the pressure controller (5). One end of the upper end face of the wireless transmission board (6) is fixed with an antenna (601). A signal strengthening pot (602) is installed around the antenna (601).

3. The pressure transmitter with a self-calibration function according to claim 2, wherein, One end of the lower end face of the wireless transmission board (6) is fixed with a rotating seat (603). The rotating seat (603) is rotatably installed on the top of the pressure controller (5). The inside of the rotating seat (603) is hollow. The antenna (601) is connected to a communication data line (604). The communication data line (604) extends into the pressure controller (5) from the lower port of the rotating seat (603) to form an electrical connection.

4. The pressure transmitter with a self-calibration function according to claim 1, characterized in that, A fixed flange seat (204) is fixed at the bottom of the main pressure transmitter (2) and is installed on the upper end face of the base (1).

5. The pressure transmitter with a self-calibration function according to claim 1, characterized in that, At least two input ends and output ends are provided for both the main pressure transmitter (2) and the secondary pressure transmitter (3). The output end of the main pressure transmitter (2) includes a first input interface (201) and a second input interface (202). Solenoid valves (203) are installed on both the first input interface (201) and the second input interface (202).

6. The pressure transmitter with a self-calibration function according to claim 5, characterized in that, One end of the pressure calibration pipe (401) far from the pressure pump (4) is connected to the second input interface (202).

7. The pressure transmitter with a self-calibration function according to claim 1, characterized in that, Fixed ears (101) are symmetrically fixed at both ends of the bottom of the base (1). A plurality of fixing holes (102) for cooperating with bolts for installation are provided on the fixed ears (101).

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