Automatic pressure-stabilizing water replenishing device

Abstract

The utility model belongs to the technical field of water supply systems, and particularly relates to an automatic pressure-stabilizing water replenishing device which comprises a pressure-stabilizing tank, the top end of the pressure-stabilizing tank is respectively connected with a liquid level transmitter, a pressure transmitter and a gas adjusting pipeline, the tail end of the gas adjusting pipeline is divided into a gas inlet pipeline and a gas outlet pipeline, a pressure-stabilizing valve is arranged on the gas inlet pipeline, and the gas outlet pipeline is provided with a gas outlet. The side wall of the pressure stabilizing tank is connected with a water supplementing pipe, the tail end of the water supplementing pipe is connected with a water supplementing pool, the water supplementing pipe is provided with a check valve and a water supplementing pump, the bottom end of the pressure stabilizing tank is connected with a water supply pipe, the tail end of the water supply pipe is connected with a water supply system needing pressure stabilization, and the water supply pipe is provided with an outlet valve. The liquid level transmitter, the pressure transmitter, the pressure stabilizing valve, the pressure reducing valve, the check valve, the make-up pump and the outlet valve are all connected with a controller. According to the device, the liquid level transmitter and the pressure transmitter are combined with the check valve, the pressure maintaining valve and the pressure reducing valve, pressure is balanced rapidly and accurately, and system fluctuation is prevented.

Description

TECHNICAL FIELD

[0001] The utility model belongs to water supply system technical field especially relates to an automatic pressure stabilizing water supplement device. BACKGROUND

[0002] Due to the need of steelmaking process, the crystallizer closed circuit water supply system requires that the water supply system pressure is stable, in the actual operation, due to the system evaporation loss, combined with the different degree pipe leakage, pollution and other conditions, the pressure inevitably exists fluctuation, the traditional solution is to add pressure control water supplement pump, more advanced is to increase frequency conversion water supplement pump, but the common shortcomings of the added water supplement pump are that control is not timely, lag is obvious, and the system fluctuation is large, especially the pressure control water supplement pump, start-stop frequently, the failure rate is extremely high in actual, and the automation degree is lower. INVENTION CONTENTS

[0003] The utility model aims at providing an automatic pressure stabilizing water supplement device, solves the problems of traditional method control not timely, lag obvious and system fluctuation large.

[0004] An automatic pressure stabilizing water supplement device, including the pressure stabilizing tank, the pressure stabilizing tank top respectively connects liquid level transmitter, pressure transmitter and gas adjusting pipeline, the gas adjusting pipeline end is divided into gas inlet pipeline and gas outlet pipeline, is equipped with pressure stabilizing valve on gas inlet pipeline, is equipped with pressure reducing valve on gas outlet pipeline, the sidewall of pressure stabilizing tank is connected with water supplement pipe, and the water supplement pipe end is connected with water supplement pool, and check valve and water supplement pump are equipped on water supplement pipe, the bottom of pressure stabilizing tank is connected with water supply pipe, and the water supply pipe end is connected with the water supply system needing stable pressure, and outlet valve is equipped on water supply pipe, liquid level transmitter, pressure transmitter, pressure stabilizing valve, pressure reducing valve, check valve, water supplement pump and outlet valve are connected with controller.

[0005] Preferably, the gas inlet pipeline is connected to a nitrogen storage tank.

[0006] Preferably, the gas inlet pipeline, gas outlet pipeline, water supplement pipe and water supply pipe are all made of steel.

[0007] Preferably, the pressure stabilizing tank is set to a target pressure of 0.75MPA.

[0008] The utility model obtains the beneficial effect:

[0009] (1) the pressure stabilizing tank pressure is measured by pressure transmitter, and data is transmitted to controller in real time, and the pressure stabilizing valve and pressure reducing valve on gas inlet pipeline and gas outlet pipeline are opened and closed by controller, so that the pressure is balanced quickly and accurately, and the system fluctuation is prevented;

[0010] (2) through the liquid level transmitter measures the liquid level in the pressure tank, and the data is transmitted to the controller in real time, through the controller to open and close the check valve and water supply pump on the water supply pipe, timely and accurate water supply to the pressure tank, combined with the controller to open and close the pressure reducing valve on the gas discharge pipeline, timely and accurate pressure balance, realize fast control, prevent hysteresis cause failure. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 The structure of the embodiment of the utility model is shown.

[0012] The reference signs are explained: 1, pressure tank; 2, liquid level transmitter; 3, pressure transmitter; 4, gas regulating pipeline; 41, gas inlet pipeline; 42, gas discharge pipeline; 5, nitrogen storage tank; 6, pressure regulating valve; 7, pressure reducing valve; 8, water supply pipe; 9, water supply tank; 10, check valve; 11, water supply pump; 12, water supply pipe; 13, water supply system needing stable pressure; 14, outlet valve. DETAILED DESCRIPTION

[0013] The technical scheme of the utility model is described clearly and completely in combination with the drawings and embodiments.

[0014] As shown in the drawing, Figure 1 An automatic pressure stabilizing and water supplying device, comprising a pressure tank 1, the pressure target value in the pressure tank 1 is 0.75MPA, the top end of the pressure tank 1 is connected with a liquid level transmitter 2, a pressure transmitter 3 and a gas regulating pipeline 4 respectively, the end of the gas regulating pipeline 3 is divided into a gas inlet pipeline 41 and a gas discharge pipeline 42, the gas inlet pipeline 41 is connected with a nitrogen storage tank 5, a pressure regulating valve 6 is arranged on the gas inlet pipeline 41, a pressure reducing valve 7 is arranged on the gas discharge pipeline 42, a water supply pipe 8 is connected to the side wall of the pressure tank 1, the end of the water supply pipe 8 is connected with a water supply tank 9, a check valve 10 and a water supply pump 11 are arranged on the water supply pipe 8, the bottom end of the pressure tank 1 is connected with a water supply pipe 12, the end of the water supply pipe 12 is connected with a water supply system 13 needing stable pressure, an outlet valve 14 is arranged on the water supply pipe 12, the liquid level transmitter 2, the pressure transmitter 3, the pressure regulating valve 6, the pressure reducing valve 7, the check valve 10, the water supply pump 11 and the outlet valve 14 are all connected with a controller.

[0015] Working principle: when the pressure tank 1 supplies water to the water supply system 13 which needs stable pressure, the outlet valve 14 on the water supply pipe 12 opens, the pressure in the pressure tank 1 decreases, the pressure transmitter 3 detects and outputs signals to the controller, the controller adjusts the opening of the pressure regulating valve 6 on the gas inlet pipe 41, the nitrogen gas in the nitrogen gas tank 5 enters the pressure tank 1 through the gas inlet pipe 41, the pressure in the pressure tank 1 rapidly rises, after dynamic adjustment, the pressure deviation of the water supply device is close to zero, the pressure regulating valve 6 on the gas inlet pipe 41 closes, the actual pressure value of the water supply device is close to the set value of the water supply device, and the water supply device re-reaches the pressure balance state; the liquid level transmitter 2 detects the liquid level in the pressure tank 1 and outputs signals to the controller, when the pressure tank 1 itself supplies water, the check valve 10 on the water supply pipe 8 connected with the water supply tank 9 opens, the water supply pump 11 works, the water in the water supply tank 9 enters the pressure tank 1 through the water supply pipe, the pressure in the pressure tank 1 rises, breaking the original pressure balance state, the pressure transmitter 3 detects and outputs signals to the controller, the controller adjusts the opening of the pressure reducing valve 7 on the gas discharge pipe 42, and the pressure rapidly decreases; when the pressure deviation is close to zero, the pressure reducing valve 7 closes, and the system restores the pressure balance state.

Claims

1. An automatic pressure-stabilizing water supply device, characterized in that, The device includes a pressure stabilizing tank. A level transmitter, a pressure transmitter, and a gas regulating pipeline are connected to the top of the pressure stabilizing tank. The gas regulating pipeline is divided into a gas inlet pipeline and a gas outlet pipeline. A pressure stabilizing valve is installed on the gas inlet pipeline, and a pressure reducing valve is installed on the gas outlet pipeline. A water supply pipe is connected to the side wall of the pressure stabilizing tank, and its end is connected to a water supply tank. A check valve and a water supply pump are installed on the water supply pipe. A water supply pipe is connected to the bottom of the pressure stabilizing tank, and its end is connected to a water supply system requiring stable pressure. An outlet valve is installed on the water supply pipe. The level transmitter, pressure transmitter, pressure stabilizing valve, pressure reducing valve, check valve, water supply pump, and outlet valve are all connected to a controller.

2. The automatic pressure-stabilizing and water-replenishing device according to claim 1, characterized in that, The gas enters through a pipeline connected to a nitrogen storage tank.

3. The automatic pressure-stabilizing and water-replenishing device according to claim 1, characterized in that, The gas inlet pipe, gas outlet pipe, water supply pipe, and water supply pipe are all made of steel.

4. The automatic pressure-stabilizing and water-replenishing device according to claim 1, characterized in that, The target pressure in the pressure stabilizing tank is set at 0.75 MPa.

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