Automatic backflow constant pressure system for filling station
By designing an automatic return constant pressure system in the filling station, the pressure value in the filling pipeline is monitored and adjusted in real time, the problems of hydrocarbon pump pressure and pipeline gas resistance are solved, and the constant filling pressure is achieved, which extends the equipment life and improves the filling efficiency.
Patent Information
- Application Number
- CN202510100223.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-22
- Publication Date
- 2025-05-02
AI Technical Summary
When filling media such as propane and liquefied gas, existing filling stations are prone to pressure holding the hydrocarbon pump due to excessive pressure, and pipeline gas resistance problems seriously affect the filling speed and efficiency.
An automatic return constant pressure system for filling stations is designed, including filling pipes, hydrocarbon pumps, pressure sensors, controllers, return pipes and return valves. By monitoring the pressure value in the filling pipe in real time, and calculating the required return valve opening according to the preset algorithm, adjusting the return flow rate, and refluxing the excess medium back to the storage tank, thereby reducing the pressure value in the filling pipe and achieving a constant filling pressure.
It effectively avoids the problem of holding the pressure of hydrocarbon pumps, extends the service life of the equipment, and completely solves the problem of pipeline gas resistance, speeds up the filling speed, and improves the filling efficiency.
Smart Images
Figure CN119914822A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of filling stations, and in particular to an automatic reflux constant pressure system for a filling station. Background Art
[0002] The present invention relates to the technical field of filling stations, and in particular to an automatic reflux constant pressure system for achieving a constant filling pressure, avoiding pressure build-up in a hydrocarbon pump, extending the service life of equipment, and solving the problem of gas blockage in pipelines during the filling process of media such as propane and liquefied gas.
[0003] In existing filling stations, there are often many problems in the filling process of propane, liquefied gas and other media. For example, hydrocarbon pumps are prone to pressure build-up due to excessive pressure during the filling process, resulting in equipment damage and increased maintenance costs; at the same time, pipeline air blockage also seriously affects the filling speed and efficiency. Therefore, the present invention proposes an automatic reflux constant pressure system for a filling station to solve the above problems. Summary of the invention
[0004] The object of the present invention is to provide an automatic reflux constant pressure system for a filling station to solve the problems raised in the above-mentioned background technology.
[0005] The automatic reflux constant pressure system for a filling station of the present invention comprises a filling pipeline, a hydrocarbon pump, a pressure sensor, a controller, a reflux pipeline, a reflux valve and other components. Among them, the filling pipeline is used to transport the medium from the storage tank to the filling equipment; the hydrocarbon pump is used to provide the pressure required for filling; the pressure sensor is used to monitor the pressure value in the filling pipeline in real time; the controller is used to receive the signal of the pressure sensor and calculate the required reflux valve opening according to a preset algorithm; the reflux pipeline is connected between the filling pipeline and the storage tank, and is used to reflux the excess medium to the storage tank; the reflux valve is used to adjust the reflux flow according to the instructions of the controller.
[0006] When the pressure value in the filling pipeline exceeds the preset value, the pressure sensor sends a signal to the controller. After receiving the signal, the controller calculates the required opening of the return valve through the preset algorithm and sends a command to the return valve to make corresponding adjustments. In this way, the excess medium will flow back to the storage tank through the return pipeline, thereby reducing the pressure value in the filling pipeline and achieving the purpose of constant filling pressure.
[0007] In addition, the present invention can also set a fault alarm module and an emergency shutdown module in the controller, so that an alarm signal can be issued in time and the machine can be shut down for protection when a fault occurs.
[0008] In summary, this application includes the following beneficial technical effects:
[0009] 1. By real-time monitoring of the pressure value in the filling pipeline and adjusting the opening of the reflux valve in real time according to the value, the purpose of constant filling pressure is achieved, the problem of hydrocarbon pump pressure build-up is effectively avoided, and the service life of the hydrocarbon pump and pipeline is extended.
[0010] 2. Since the system can adjust the pressure value in the filling pipeline in real time, it can completely solve the problem of pipeline air blockage, speed up the filling speed and improve the filling efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is the front view of the present invention.
[0012] In the figure: 1. filling pipeline; 2. hydrocarbon pump; 3. pressure sensor; 4. controller; 5. reflux pipeline; 6. reflux valve. DETAILED DESCRIPTION
[0013] The following is combined with Figure 1 This application is described in further detail.
[0014] This embodiment provides a specific implementation of an automatic reflux constant pressure system for a filling station. In this embodiment, the filling pipeline 1, hydrocarbon pump 2, pressure sensor 3, controller 4, reflux pipeline 5 and reflux valve 6 are connected and configured according to the above technical solution.
[0015] Specifically, one end of the filling pipeline 1 is connected to the storage tank, and the other end is connected to the filling equipment, which is used to transport the medium from the storage tank to the filling equipment. The hydrocarbon pump 2 is arranged on the filling pipeline 1 to provide the pressure required for filling. The pressure sensor 3 is arranged on the filling pipeline 1 to monitor the pressure value in the filling pipeline 1 in real time and send the signal to the controller 4.
[0016] After receiving the signal from the pressure sensor 3, the controller 4 calculates the required opening of the reflux valve 6 through a preset algorithm, and sends an instruction to the reflux valve 6 to adjust it accordingly. The reflux pipe 5 is connected between the filling pipe 1 and the storage tank to return the excess medium to the storage tank. The reflux valve 6 is installed on the reflux pipe 5 to adjust the reflux flow according to the instruction of the controller 4.
[0017] In addition, the present embodiment also provides a fault alarm module and an emergency stop module in the controller 4. When the pressure value in the filling pipeline 1 exceeds the preset safety range, the fault alarm module will send out an alarm signal to remind the operator to handle it in time. When receiving the emergency stop command, the emergency stop module will immediately stop the operation of the hydrocarbon pump 2 to protect the safety of equipment and personnel.
[0018] The working principle of the automatic reflux constant pressure system for a filling station of the present invention is as follows:
[0019] When the pressure value in the filling pipeline 1 exceeds the preset value, the pressure sensor 3 sends a signal to the controller 4. After receiving the signal, the controller 4 calculates the required opening of the reflux valve 6 through a preset algorithm and sends an instruction to the reflux valve 6. The reflux valve 6 adjusts the reflux flow according to the instruction of the controller 4, so that the excess medium flows back to the storage tank through the reflux pipeline 5. In this way, the pressure value in the filling pipeline 1 will gradually decrease until it reaches a preset constant value. At the same time, the controller 4 can also monitor the pressure value in the filling pipeline 1 in real time, and make corresponding adjustments as needed to keep the filling pressure constant.
[0020] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the instructions and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. Machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.
[0021] The above describes an exemplary implementation of an automatic reflux constant pressure system for a filling station provided by the present disclosure with reference to a preferred embodiment. However, it can be understood by those skilled in the art that, without departing from the concept of the present disclosure, various modifications and variations can be made to the above-mentioned specific embodiments, and various technical features and structures proposed in the present disclosure can be combined in various ways without exceeding the protection scope of the present disclosure, which is determined by the attached claims.
Claims
1. An automatic reflux constant pressure system for a filling station, characterized in that: include: A filling pipeline (1), a hydrocarbon pump (2), a pressure sensor (3), a controller (4), a reflux pipeline (5), and a reflux valve (6), wherein the hydrocarbon pump (2) is arranged on the filling pipeline (1), the pressure sensor (3) is arranged on the filling pipeline (1), the controller (4) is electrically connected to the pressure sensor (3), and is used to receive a signal from the pressure sensor (3), and calculate a required opening degree of the reflux valve (6) according to a preset algorithm, and the reflux valve (6) is installed on the reflux pipeline (5), and is electrically connected to the controller (4), and is used to adjust the reflux flow rate according to an instruction of the controller (4).
2. The automatic reflux constant pressure system for a filling station according to claim 1, characterized in that: The controller (4) also includes a fault alarm module.
3. The automatic reflux constant pressure system for a filling station according to claim 1, characterized in that: The controller (4) also includes an emergency shutdown module.