KR102767935B1 - Automatic back pressure adjustment system of pump - Google Patents

Abstract

A pump automatic back pressure control system according to one embodiment of the present invention includes a pump for transferring and pressurizing a fluid to at least one demand source, a differential pressure transmitter for detecting a difference in inlet and outlet pressures of the pump and outputting a signal for the detected difference in inlet and outlet pressures of the pump, a hydraulic orifice valve having an actuator for controlling the back pressure of the pump and a variable orifice capable of controlling a flow rate opening, and an ECS (Electric Control System) for controlling the flow rate opening of the variable orifice by using a signal output from the differential pressure transmitter.

Description

{AUTOMATIC BACK PRESSURE ADJUSTMENT SYSTEM OF PUMP}

An embodiment of the present invention relates to a pump automatic back pressure adjustment system, and more specifically, to a pump automatic back pressure adjustment system capable of improving the efficiency of a pump by detecting the back pressure of the pump and controlling a variable orifice.

In general, conventional pump back pressure control operates the pump by utilizing the back pressure of the system itself.

For example, in conventional cases, manual orifices were mainly used to control pump back pressure.

Briefly explaining the conventional pump back pressure control, an orifice was installed to control the back pressure of the pump, and if the appropriate back pressure for the system configuration was not formed, the installed line had to be released, a new orifice with the hole size adjusted was installed, and then the work was required to be done again. For this reason, it was difficult to operate the pump efficiently.

As a prior art document of the present invention, there is Republic of Korea Utility Model Publication No. 20-2015-0003131 (published on August 19, 2015), and the prior art document discloses a configuration of a variable orifice with adjustable diameter.

Republic of Korea Public Utility Model Publication No. 20-2015-0003131

Specifically, the purpose of the present invention is to provide a pump automatic back pressure adjustment system capable of improving the efficiency of the pump by detecting the back pressure of the pump and controlling a variable orifice.

Another object of the present invention is to provide a pump automatic back pressure control system capable of automatically operating the total head control of the pump by installing a back pressure control device considering the performance of the pump at the rear end of the pump.

The purposes of the present invention are not limited to the purposes mentioned above, and other purposes and advantages of the present invention which are not mentioned can be understood by the following description, and will be more clearly understood by the embodiments of the present invention. In addition, it will be easily understood that the purposes and advantages of the present invention can be realized by the means and combinations thereof indicated in the claims.

A pump automatic back pressure control system according to one embodiment of the present invention includes: a pump for transferring and pressurizing a fluid to at least one demand source; a differential pressure transmitter for detecting a difference in inlet and outlet pressures of the pump and outputting a signal for the detected difference in inlet and outlet pressures of the pump; a hydraulic orifice valve having an actuator for controlling the back pressure of the pump and a variable orifice capable of controlling a flow rate; and an ECS (Electric Control System) for controlling the flow rate opening of the variable orifice by using a signal output from the differential pressure transmitter.

In addition, the invention further includes a fluid supply line for supplying fluid supplied through an outlet of the pump to at least one demand source; and a fluid discharge line for discharging fluid used in the at least one demand source.

In addition, it further includes a fluid supply control valve installed in the fluid supply line to open and close the flow of fluid supplied to the at least one demand source; and a fluid discharge control valve installed in the fluid discharge line to open and close the flow of fluid discharged after being used in the at least one demand source.

In addition, when there are multiple demand sources, the fluid supply control valve and the fluid discharge control valve may be installed in multiple numbers to correspond to the multiple demand sources.

Each of the above plurality of fluid supply control valves can be installed close to the inlet of each of the above plurality of demand sources.

The above plurality of fluid discharge control valves can be installed close to the outlets of each of the above plurality of demand sources.

In addition, the invention further includes a first connecting line connecting the inlet of the pump and one side of the differential pressure transmitter, and allowing the differential pressure transmitter to detect the pressure of the fluid flowing into the inlet side of the pump.

In addition, the invention further includes a pump inlet valve installed in the first connecting line to control the flow of fluid flowing into one side of the differential pressure transmitter.

In addition, the invention further includes a second connecting line connecting the outlet of the pump and the other side of the differential pressure transmitter, and allowing the differential pressure transmitter to detect the pressure of the fluid discharged to the outlet side of the pump.

In addition, the invention further includes a pump outlet valve installed in the second connecting line to control the flow of fluid flowing into the other side of the differential pressure transmitter.

According to the present invention, the automatic pump back pressure control system has the advantage of improving the efficiency of the pump by detecting the back pressure of the pump and controlling the variable orifice.

Specifically, a back pressure adjustment device that takes into account the performance of the pump can be installed at the rear of the pump to automatically operate the total head control of the pump.

For example, to operate the pump efficiently, an actuator that can control the flow rate of the fluid is attached to the variable orifice.

A differential pressure transmitter is installed on the side of the pump to determine the total head in the suction/discharge, and this is used to adjust the flow rate opening of the variable orifice.

Accordingly, it is possible to supply the system pressure and flow rate considered, such as the optimized pump efficiency. If there are multiple consumers, the system can be set by adjusting the desired back pressure, so there is an advantage of improved system operation.

In addition to the effects described above, specific effects of the present invention are described below together with specific matters for carrying out the invention.

FIG. 1 is a conceptual diagram briefly illustrating a pump automatic back pressure adjustment system according to one embodiment of the present invention.

The above-mentioned objects, features and advantages will be described in detail below with reference to the attached drawings, so that those with ordinary skill in the art to which the present invention pertains can easily practice the technical idea of the present invention. In describing the present invention, if it is judged that a detailed description of a known technology related to the present invention may unnecessarily obscure the gist of the present invention, a detailed description thereof will be omitted. Hereinafter, a preferred embodiment according to the present invention will be described in detail with reference to the attached drawings. In the drawings, the same reference numerals are used to indicate the same or similar components.

Hereinafter, the phrase “any configuration is disposed on (or below)” a component or “on (or below)” a component may mean not only that any configuration is disposed in contact with the upper surface (or lower surface) of said component, but also that another configuration may be interposed between said component and any configuration disposed on (or below) said component.

Additionally, when a component is described as being "connected," "coupled," or "connected" to another component, it should be understood that the components may be directly connected or connected to one another, but that other components may also be "interposed" between the components, or that each component may be "connected," "coupled," or "connected" through other components.

Hereinafter, a pump automatic back pressure control system according to a preferred embodiment of the present invention will be described in detail with reference to the attached drawings.

FIG. 1 is a conceptual diagram briefly illustrating a pump automatic back pressure adjustment system according to one embodiment of the present invention.

As illustrated, a pump automatic back pressure control system (100) according to one embodiment of the present invention includes a pump (110), a differential pressure transmitter (120), a hydraulic orifice valve (130), and an ECS (Electric Control System) (140).

A pump (110) is a device that transports and pressurizes a fluid to at least one demand source.

The differential pressure transmitter (120) refers to a DPS (differential pressure transmitter).

A differential pressure transmitter (120) detects the pressure difference between the inlet and outlet of the pump (110).

And the differential pressure transmitter (120) outputs a signal as a result of the pressure difference between the inlet and outlet of the pump (110) detected as described above.

Specifically, the differential pressure transmitter (120) can be located on the side of the pump (110) and can detect information about the total head of the suction and discharge of the pump (110) and output it as a signal.

For example, a first connecting line (122) may be provided between the inlet of the pump (110) and one side of the differential pressure transmitter (120).

The first connecting line (122) serves to detect the pressure of the fluid flowing into the inlet side of the pump (110) through the differential pressure transmitter (120).

Additionally, a second connecting line (124) may be provided between the outlet of the pump (110) and the other side of the differential pressure transmitter (120).

The second connecting line (124) serves to detect the pressure of the fluid discharged from the outlet side of the pump (110) in the differential pressure transmitter (120).

In addition, in the case of the pump automatic back pressure adjustment system (100) according to one embodiment of the present invention, a pump inlet valve (121) may be installed in the first connecting line (122) and a pump outlet valve (123) may be installed in the second connecting line (124).

The pump inlet valve (121) is installed in the first connecting line (122) and provides a function of controlling the flow of fluid flowing into one side of the differential pressure transmitter.

The pump outlet valve (123) is installed in the second connecting line (124) to control the flow of fluid flowing into the other side of the differential pressure transmitter (120).

In this way, the differential pressure transmitter (120) is located on the side of the pump (110) and can quickly and accurately detect the difference in inlet and outlet pressure of the pump (110).

The hydraulic orifice valve (130) is equipped with an actuator (131) for controlling the back pressure of the pump (110) and may be equipped with a variable orifice (133) capable of controlling the flow rate.

ECS (140) stands for Electric Control System.

In other words, ECS (140) is a control device that adjusts the flow rate opening of the variable orifice (133) using the signal output from the differential pressure transmitter (120).

Meanwhile, the pump automatic back pressure adjustment system (100) according to one embodiment of the present invention further includes a fluid supply line (111) and a fluid discharge line (113).

The fluid supply line (111) refers to a fluid transport pipe installed to supply the fluid (W) supplied through the outlet of the pump (110) to at least one demand source (210, 220).

The fluid discharge line (113) refers to a fluid transport pipe installed to discharge fluid used in at least one demand source (210, 220).

Meanwhile, the pump automatic back pressure control system (100) according to one embodiment of the present invention may further include a fluid supply line (111) and a fluid discharge line (113), as well as a fluid supply control valve (211, 221) and a fluid discharge control valve (213, 223).

The fluid supply control valve (211, 221) is installed in the fluid supply line (111) and opens and closes the flow of fluid (W) supplied to at least one demand source (210, 220).

The fluid discharge control valve (213, 223) is installed in the fluid discharge line (113) and opens and closes the flow of fluid discharged after use at least at one demand source (210, 220).

Meanwhile, in the case of the pump automatic pressure control system (100) according to one embodiment of the present invention, a plurality of demand sources (210, 220) may be formed as illustrated.

If there are multiple demand sources (210, 220), the fluid supply control valves (211, 221) and the fluid discharge control valves (213, 223) may also be installed in numbers corresponding to the multiple demand sources (210, 220) (e.g., 2, etc.).

If the multiple demand sources (210, 220) are referred to as the first and second demand sources (210, 220) for convenience of explanation, a first fluid supply control valve (211) can be installed at the inlet of the first demand source (210).

And a first fluid discharge control valve (213) can be installed at the outlet of the first demand source (210).

Similarly, a second fluid supply control valve (221) may be installed at the inlet of the second demand source (220).

And a second fluid discharge control valve (223) can be installed at the outlet of the second demand source (220).

In this way, the first and second fluid supply control valves (211, 221) are each installed close to the inlets of the first and second demand sources (210, 220), and can control the fluid supplied to each demand source.

In addition, the first and second fluid discharge control valves (213, 223) are each installed close to the outlets of the first and second demand sources (210, 220), and can control the fluid discharged from each demand source.

As described above, according to the configuration and operation of the present invention, the efficiency of the pump can be improved by detecting the back pressure of the pump and controlling the variable orifice.

Specifically, a back pressure adjustment device that takes into account the performance of the pump can be installed at the rear of the pump to automatically operate the total head control of the pump.

For example, according to the present invention, in order to efficiently operate the pump, an actuator capable of controlling the flow rate of fluid is attached to a variable orifice.

And on the side of the pump, a differential pressure transmitter that can detect the total head in the suction/discharge is installed, and this is used to adjust the flow opening of the variable orifice.

As a result, it is possible to supply the system pressure and flow rate considered, such as optimized pump efficiency.

If there are multiple consumers, the system can be set to adjust the desired back pressure, which can improve system operation.

Although the present invention has been described with reference to the drawings as examples, it is obvious that the present invention is not limited to the embodiments and drawings disclosed in this specification, and that various modifications can be made by those skilled in the art within the scope of the technical idea of the present invention. In addition, even if the effects according to the configuration of the present invention were not explicitly described while describing the embodiments of the present invention, it is natural that the effects that can be predicted by the corresponding configuration should also be recognized.

100: Pump automatic pressure adjustment system
110: Pump
111: Fluid supply line
113: Fluid discharge line
120: Differential pressure transmitter (DPS)
121: Pump inlet valve
123: Pump outlet valve
130: Hydraulic Orifice Valve
140: ECS(Electric Control System)
210: 1st demand source
211: First fluid supply control valve
213: First fluid discharge control valve
220: Second demand source
221: Second fluid supply control valve
223: Second fluid discharge control valve

Claims (8)

A pump for transporting and pressurizing a fluid to at least one demand source;
A differential pressure transmitter that detects the difference between the inlet and outlet pressures of the above pump and outputs a signal for the detected difference between the inlet and outlet pressures of the above pump;
A hydraulic orifice valve having an actuator attached to control the back pressure of the above pump and a variable orifice whose opening can be adjusted;
An ECS (Electric Control System) that controls the opening of the variable orifice by using a signal output from the differential pressure transmitter;
A first connecting line connecting between the inlet of the pump and one side of the differential pressure transmitter, and allowing the differential pressure transmitter to detect the pressure of the fluid flowing into the inlet side of the pump; and
A pump inlet valve installed in the first connecting line to control the flow of fluid flowing into one side of the differential pressure transmitter;
Pump automatic back pressure control system including.
In the first paragraph,
A fluid supply line for supplying fluid supplied through the outlet of the above pump to at least one demand source; and
A fluid discharge line for discharging fluid used in at least one of the above demand sources;
A pump automatic back pressure adjustment system including:
In the second paragraph,
A fluid supply control valve installed in the fluid supply line to open and close the flow of fluid supplied to at least one demand source; and
A fluid discharge control valve installed in the above fluid discharge line to open and close the flow of fluid discharged after use at least at one demand source;
A pump automatic back pressure adjustment system including:
In the third paragraph,
If there are multiple demand sources,
The above fluid supply control valve and the above fluid discharge control valve are installed in multiple units to correspond to the multiple demand sources.
Each of the above plurality of fluid supply control valves is installed close to the inlet of each of the above plurality of demand sources,
The above-described plurality of fluid discharge control valves are each characterized in that they are installed close to the outlet of each of the above-described plurality of demand sources.
Pump automatic back pressure adjustment system.
delete delete In the first paragraph,
A second connecting line connecting the outlet of the above pump and the other side of the above differential pressure transmitter, and allowing the pressure of the fluid discharged to the outlet side of the above pump to be detected by the above differential pressure transmitter;
A pump automatic back pressure adjustment system including:
In Article 7,
A pump outlet valve installed in the second connecting line to control the flow of fluid flowing into the other side of the differential pressure transmitter;
A pump automatic back pressure adjustment system including: