A pressure transmitter device for replacing a remote pressure gauge of a water supply equipment

Abstract

The utility model relates to water supply controller technical field especially relates to a kind of water supply equipment remote pressure gauge pressure transmitter device, including remote pressure gauge, pressure transmitter, signal conversion module, voltage stabilizing resistance, signal isolation module, the signal conversion module is electrically connected the remote pressure gauge with the pressure transmitter, current signal input by the pressure transmitter is changed into voltage signal, the voltage stabilizing resistance is connected in series between the remote pressure gauge with the signal conversion module, the signal isolation module is electrically connected the signal conversion module, reduce the interference that the signal conversion module is suffered in circuit.The device can efficiently convert the current signal output by pressure transmitter into the voltage signal required by remote pressure gauge, realizes the direct, seamless replacement of pressure transmitter to remote pressure gauge, strong compatibility, retrofit is convenient, and stability and reliability are high, safety protection performance is good, and it is favorable to popularization and use.

Description

Technical Field

[0001] This utility model relates to the field of water supply controller technology, and in particular to a pressure transmitter device for remote pressure gauges in water supply equipment. Background Technology

[0002] In high-rise secondary water supply systems without negative pressure, the controller's operation relies on pressure signals provided by input components. Traditional, older equipment commonly uses remote pressure gauges as signal acquisition devices. However, remote pressure gauges suffer from problems such as low control accuracy, susceptibility to mechanical fatigue leading to signal transmission inaccuracies after long-term use, and the introduction of measurement errors. In contrast, pressure transmitters offer significant advantages such as stable control and long service life.

[0003] However, there are technical obstacles to directly applying pressure transmitters to equipment originally controlled by remote pressure gauges: remote pressure gauges typically use voltage signals for control, while pressure transmitters output current signals; the two signal formats are incompatible and cannot be directly replaced. Furthermore, pressure transmitters are susceptible to electromagnetic interference in complex industrial environments, affecting the stability and accuracy of signal transmission.

[0004] Existing technologies lack an integrated retrofit device that can easily and effectively convert current signals into compatible voltage signals while also possessing anti-interference capabilities. This results in complex and costly equipment upgrade and retrofit processes with unreliable reliability. Summary of the Invention

[0005] The main purpose of this utility model is to overcome the shortcomings of the existing technology and provide a device for converting a remote pressure gauge of a water supply equipment into a pressure transmitter.

[0006] The technical solution adopted by this utility model to achieve its technical objective is: a device for converting a remote pressure gauge of a water supply equipment into a pressure transmitter, comprising: Remote pressure gauge; Pressure transmitter; The signal conversion module is electrically connected to the remote pressure gauge and the pressure transmitter. It converts the current signal input by the pressure transmitter into a voltage signal, realizing the conversion from current signal to voltage signal and adapting to the original remote pressure gauge interface.

[0007] A voltage-stabilizing resistor is connected in series between the remote pressure gauge and the signal conversion module to stabilize the signal voltage and prevent signal fluctuations.

[0008] A signal isolation module is electrically connected to the signal conversion module to reduce interference experienced by the signal conversion module in the circuit, improve anti-interference capability, and ensure the stability of signal transmission.

[0009] Preferably, the voltage regulator is set to a resistance of 500 ohms and connected in series between the remote pressure gauge and the signal conversion module. A 500-ohm resistance is a typical matching value, conforming to industry standards, and, in conjunction with the signal conversion module, can efficiently convert the current signal output by the pressure transmitter into the voltage signal required by the remote pressure gauge.

[0010] Preferably, the pressure transmitter is electrically connected to the input terminal of the signal conversion module, and the remote pressure gauge is electrically connected to the output terminal of the signal conversion module.

[0011] Preferably, the signal conversion module includes a first port and a second port, which are electrically connected to the positive and negative terminals of the pressure transmitter, respectively. It also includes ports 3 and 4, which are electrically connected to the positive and negative terminals of the remote pressure gauge, respectively.

[0012] Preferably, the voltage-stabilizing resistor is connected in series in the negative circuit where the remote pressure gauge and the signal conversion module are connected. The resistor is connected in series in the negative circuit to avoid interference from the positive circuit and improve signal purity.

[0013] Preferably, the signal conversion module is externally connected to a 24V power supply, with the positive and negative terminals of the 24V power supply electrically connected to the positive and negative terminals of the signal conversion module, respectively. The 24V power supply provides a stable operating voltage, ensuring the normal operation of the signal conversion module and is suitable for industrial standard 24V power supply environments.

[0014] Preferably, the device is suitable for negative pressure-free water supply equipment with a pressure range of 0 to 16 MPa.

[0015] Preferably, the device further includes an insulating housing, which comprises a bottom shell and an outer shell. The bottom shell and the outer shell are connected as a single unit via a positioning hole and a pin, wherein the positioning hole and the pin are interference-fitted. The bottom shell and the outer shell are fixed together by the interference fit between the pin and the hole, thereby providing mechanical protection and electrical insulation, preventing dust and moisture intrusion, and enhancing safety and durability.

[0016] Preferably, both the bottom shell and the outer shell have semi-circular holes on their sides for wires to pass through. The semi-circular holes are located on the sides of the shell and, when closed, form a complete wire channel, facilitating the introduction and exit of wires, preventing cable wear, and maintaining the shell's airtightness.

[0017] Preferably, a first molded shell and a second molded shell are disposed within the semi-circular hole. Both the first and second molded shells are internally wrapped with a protective pad, and are connected by a slot and an elastic pin. The molded shells are designed as separate units, connected by slots and pins, and have an internal protective pad to protect the wire sheath, prevent cuts or pull-out, and enhance the mechanical strength and sealing of the interface.

[0018] Compared with the prior art, the beneficial effects of this utility model are: This water supply equipment remote pressure gauge to pressure transmitter conversion device, through a signal conversion module and a voltage-stabilizing resistor of a specific resistance value, can efficiently convert the current signal output by the pressure transmitter into the voltage signal required by the remote pressure gauge, realizing the direct and seamless replacement of the pressure transmitter with the remote pressure gauge. No modifications to the original circuitry inside the control cabinet are required; installation can be completed simply through port connections, greatly simplifying the construction process, reducing modification costs and technical barriers, offering strong compatibility, and facilitating convenient modification.

[0019] This water supply equipment's remote pressure gauge has been upgraded to a pressure transmitter device, integrating a signal isolation module. This effectively suppresses external electromagnetic interference in the circuit, ensuring the purity and stability of signal transmission, and improving the anti-interference capability and measurement accuracy of the entire control system. Simultaneously, the use of a pressure transmitter standardizes the front-end sensor, overcoming the drawbacks of the original remote pressure gauges' diverse brands and inconsistent quality. This extends the equipment's lifespan, facilitates daily maintenance and spare parts management, and ensures high stability and reliability.

[0020] This water supply equipment's remote pressure gauge-to-pressure transmitter device is entirely encapsulated within an insulating housing consisting of a bottom shell and an outer shell connected by an interference fit. This provides excellent mechanical protection, electrical insulation, and dust and moisture protection. The wire exit points are equipped with a molded shell structure with protective pads, effectively preventing cable wear and cuts, enhancing the sealing and mechanical strength of the interfaces, and improving the device's applicability and safety in harsh industrial environments, resulting in good safety protection performance.

[0021] This water supply equipment remote pressure gauge is converted into a pressure transmitter device. This device is particularly suitable for negative pressure water supply equipment with a pressure range of 0-16 MPa. It provides a standardized and efficient solution for upgrading the control accuracy of such old equipment, which is conducive to its widespread use. Attached Figure Description

[0022] Figure 1 A structural flow diagram of a device to modify a remote pressure gauge for water supply equipment into a pressure transmitter.

[0023] Figure 2 This is a schematic diagram of the circuit connection structure of the signal conversion module.

[0024] Figure 3 This is a schematic diagram of the circuit structure of the signal isolation module.

[0025] Figure 4 This is a schematic diagram of the main structure of the bottom shell and its internal structure.

[0026] Figure 5 This is a schematic diagram of the main structure of the outer shell and its internal structure.

[0027] Figure 6 This is a schematic diagram of the main structure of the second molded shell, the elastic locking pin, and the protective pad.

[0028] in: 1-Remote pressure gauge; 2-Pressure transmitter; 3-Signal conversion module; 4-Voltage stabilizing resistor; 5-Signal isolation module; 6-24V power supply; 7-Insulating housing; 701-Bottom housing; 702-Positioning socket; 703-Outer housing; 704-Pin; 705-Semi-circular hole; 8-First molded housing; 801-Protective pad; 802-Slot; 803-Second molded housing; 804-Elastic locking pin. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit its scope. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of the present utility model.

[0030] In the description of this utility model, it should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to or indirectly connected to the other element.

[0031] In the description of this utility model, it should be noted that the terms "center," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified. "Several" means one or more, unless otherwise explicitly specified.

[0032] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Example 1:

[0033] Please see Figures 1-3 A pressure transmitter device for remote pressure gauges in water supply equipment is disclosed. The device is suitable for negative pressure water supply equipment with a pressure range of 0 to 16 MPa and includes a remote pressure gauge 1, a pressure transmitter 2, a signal conversion module 3, a voltage stabilizing resistor 4, and a signal isolation module 5.

[0034] The signal conversion module 3 is connected to an external 24V power supply 6. The positive and negative terminals of the 24V power supply 6 are electrically connected to the positive and negative terminals of the signal conversion module 3, respectively.

[0035] Signal conversion module 3 is electrically connected to remote pressure gauge 1 and pressure transmitter 2, converting the current signal input from pressure transmitter 2 into a voltage signal. Pressure transmitter 2 is electrically connected to the input terminal of signal conversion module 3, and remote pressure gauge 1 is electrically connected to the output terminal of signal conversion module 3. Signal conversion module 3 includes port 1 and port 2, which are electrically connected to the positive and negative terminals of pressure transmitter 2, respectively; it also includes port 3 and port 4, which are electrically connected to the positive and negative terminals of remote pressure gauge 1, respectively.

[0036] The voltage regulator 4 is set to a resistance of 500 ohms and is connected in series between the remote pressure gauge 1 and the signal conversion module 3. The voltage regulator 4 is also connected in series in the negative terminal circuit of the remote pressure gauge 1 and the signal conversion module 3.

[0037] The signal isolation module 5 is electrically connected to the signal conversion module 3 to reduce the interference experienced by the signal conversion module 3 in the circuit.

[0038] Implementation: 2:

[0039] Please see Figures 4-6Based on the above embodiments, the water supply equipment remote pressure gauge to pressure transmitter device further includes an insulating housing 7. The insulating housing 7 includes a bottom shell 701 and an outer shell 703, which are connected as one unit through positioning holes 702 and pins 704. The positioning holes 702 and pins 704 are interference-fitted. Both the bottom shell 701 and the outer shell 703 have a concave structure. The signal conversion module 3 is fixed in the middle part of the bottom shell 701, and the positioning holes 702 are fixed at the four corners. The pins 704 are fixed at the four corners of the outer shell 703. The bottom shell 701 and the outer shell 703 are connected as one unit through the interference fit of the pins 704 and the positioning holes 702 to form an insulating housing 7 with an internal space. The insulating housing 7 covers and protects the signal conversion module 3.

[0040] Both the bottom shell 701 and the outer shell 703 have semi-circular holes 705 on their sides for wires to pass through. When the bottom shell 701 and the outer shell 703 are connected as one unit, the semi-circular holes 705 on the bottom shell 701 and the semi-circular holes 705 on the outer shell 703 form a complete circular hole, so that the wires can pass through the complete circular hole and be electrically connected to the signal conversion module 3.

[0041] A first molding shell 8 and a second molding shell 803 are provided inside the semi-circular hole 705. The interior of the first molding shell 8 and the second molding shell 803 are both wrapped with a protective pad 801, and the two are connected by a snap-fit ​​connection through a slot 802 and an elastic pin 804.

[0042] The first molded shell 8 is fixed inside the semi-circular hole 705 on the bottom shell 701, and the slot 802 is opened on the upper and lower sides of the first molded shell 8. The elastic pin 804 is fixed on the upper and lower sides of the second molded shell 803. The first molded shell 8 and the second molded shell 803 are connected as one unit by the snap-fit ​​connection of the slot 802 and the elastic pin 804.

[0043] Both the first molded shell 8 and the second molded shell 803 are hollow inside and are wrapped by elastic protective pads 801. When the wire is electrically connected to the signal conversion module 3, the outer end of the wire is first placed in the protective pad 801 in the first molded shell 8, and then the second molded shell 803 is covered, so that the outer end of the wire is wrapped by the protective pad 801. The protective pad 801 can provide elastic protection and guidance for the wire.

[0044] When the outer shell 703 covers the bottom shell 701, the semi-circular hole 705 on the outer shell 703 fits the second molded shell 803 perfectly, preventing dust from leaking into the internal space of the insulating shell 7.

[0045] The solution in this embodiment can be selectively combined with solutions in other embodiments.

[0046] The working principle and specific usage process of the remote pressure gauge to pressure transmitter device for water supply equipment are as follows: The pressure transmitter 2 inputs the detected pressure signal to the signal conversion module 3 in the form of current. The signal conversion module 3 converts the current signal into a voltage signal, and the voltage is regulated by the voltage stabilizing resistor 4 connected in series between the remote pressure gauge 1 and the signal conversion module 3. The signal isolation module 5 isolates the signal output by the signal conversion module 3 to reduce external interference. The converted voltage signal is output to the remote pressure gauge 1 for display or transmission.

[0047] The entire device is powered by an external 24V power supply 6 and encapsulated in an insulating housing 7. The housing 7 is connected by a bottom shell 701 and an outer shell 703 through an interference fit of a positioning socket 702 and a pin 704. The wires enter and exit through a semi-circular hole 705. The hole is equipped with a first plastic shell 8 and a second plastic shell 803. The inside is equipped with a protective pad 801, which is fixed by engaging with an elastic pin 804 through a slot 802 to achieve protection and sealing of the wires.

[0048] It should be noted that although the above embodiments have been described herein, this does not limit the scope of patent protection for this utility model. Therefore, any changes and modifications made to the embodiments described herein based on the innovative concept of this utility model, or equivalent structural, procedural, or functional transformations made using the content of this utility model's specification and drawings, directly or indirectly applying the above technical solutions to other related technical fields, are all included within the scope of protection of this utility model patent.

Claims

1. A device for converting a remote pressure gauge into a pressure transmitter for a water supply equipment, characterized in that, include: Remote pressure gauge (1); Pressure transmitter (2); The signal conversion module (3) is electrically connected to the remote pressure gauge (1) and the pressure transmitter (2), and converts the current signal input by the pressure transmitter (2) into a voltage signal. A voltage regulator (4) is connected in series between the remote pressure gauge (1) and the signal conversion module (3); A signal isolation module is electrically connected to the signal conversion module (3) to reduce the interference experienced by the signal conversion module (3) in the circuit.

2. The device for converting a remote pressure gauge into a pressure transmitter for water supply equipment as described in claim 1, characterized in that: The voltage regulator (4) is set to a resistance of 500 ohms and is connected in series between the remote pressure gauge (1) and the signal conversion module (3).

3. The device for converting a remote pressure gauge into a pressure transmitter for water supply equipment as described in claim 1, characterized in that: The pressure transmitter (2) is electrically connected to the input end of the signal conversion module (3), and the remote pressure gauge (1) is electrically connected to the output end of the signal conversion module (3).

4. The device for converting a remote pressure gauge into a pressure transmitter for water supply equipment as described in claim 3, characterized in that: The signal conversion module (3) includes a first port and a second port, which are electrically connected to the positive and negative terminals of the pressure transmitter (2), respectively. It also includes port 3 and port 4, which are electrically connected to the positive and negative terminals of the remote pressure gauge (1), respectively.

5. The device for converting a remote pressure gauge into a pressure transmitter for water supply equipment as described in claim 1 or 2, characterized in that: The voltage regulator (4) is connected in series in the negative circuit of the remote pressure gauge (1) and the signal conversion module (3).

6. The device for converting a remote pressure gauge into a pressure transmitter for water supply equipment as described in claim 1, characterized in that: The signal conversion module (3) is connected to an external 24V power supply (6), and the positive and negative terminals of the 24V power supply (6) are electrically connected to the positive and negative terminals of the signal conversion module (3), respectively.

7. The device for converting a remote pressure gauge into a pressure transmitter for water supply equipment as described in claim 1, characterized in that: The device is suitable for negative pressure-free water supply equipment with a pressure range of 0 to 16 MPa.

8. The device for converting a remote pressure gauge into a pressure transmitter for water supply equipment as described in claim 1, characterized in that: It also includes an insulating housing (7), which includes a bottom shell (701) and an outer shell (703). The bottom shell (701) and the outer shell (703) are connected as one unit through a positioning hole (702) and a pin (704). The positioning hole (702) and the pin (704) are connected by an interference fit.

9. The device for converting a remote pressure gauge into a pressure transmitter for water supply equipment as described in claim 8, characterized in that: Both the bottom shell (701) and the outer shell (703) have semi-circular holes (705) on their sides for wires to pass through.

10. The device for converting a remote pressure gauge into a pressure transmitter for a water supply equipment as described in claim 9, characterized in that: The semi-circular hole (705) is provided with a first plastic shell (8) and a second plastic shell (803). The first plastic shell (8) and the second plastic shell (803) are both wrapped with a protective pad (801), and the two are connected by a snap-fit ​​connection through a slot (802) and an elastic pin (804).

Images