Automatic nitrogen charging device for energy accumulator

Abstract

Nitrogen is introduced into one end of the automatic nitrogen charging device for the energy accumulator, the other end of the automatic nitrogen charging device is connected with an energy accumulator station, a pipe connector, a one-way valve, a pressure relay and an electromagnetic directional valve are integrated together through a valve block, and the two ends of the valve block are connected with an air inlet pipe connector and an air outlet pipe connector respectively. A one-way valve communicated with the air inlet pipe connector and the air outlet pipe connector is arranged in the middle of the valve block, and a pressure relay and an electromagnetic reversing valve are further connected to the valve block. According to the automatic nitrogen charging device for the energy accumulator, the pressure of the air cavity of the energy accumulator can be monitored in real time, automatic nitrogen charging can be achieved when the pressure of the air cavity of the energy accumulator is reduced, the labor intensity of manual stamping is reduced, and manual labor is reduced.

Description

Technical Field

[0001] The utility model belongs to the field of auxiliary equipment for blast furnace tops, and particularly relates to an automatic nitrogen filling device for accumulators. Background Technique

[0002] With the development of science and technology and the metallurgical industry, an accumulator is an energy storage device that plays a crucial role in a hydraulic system. Its main functions are: shock absorption, impact absorption, and replenishing the leaked oil to maintain pressure. Before the accumulator station is put into use, nitrogen must be filled into the accumulator and the gas cylinder, and it can only be used after meeting the usage requirements.

[0003] Currently, the commonly used method for filling nitrogen into an accumulator is to use the pressure difference generated by a nitrogen cylinder and a nitrogen filling trolley to pressurize the accumulator. Under normal conditions, if the maximum nitrogen pressure of the accumulator to be filled is lower than the maximum pressure of the nitrogen cylinder, the accumulator can be inflated through an inflation tool; if the maximum nitrogen pressure of the accumulator to be filled is higher than the maximum pressure of the nitrogen cylinder, the accumulator can be inflated through a nitrogen filling vehicle. However, the existing methods for filling nitrogen into an accumulator still have the following deficiencies: (1) The air chamber pressure of the accumulator cannot be monitored in real time; (2) When the air chamber pressure decreases, it cannot be replenished in a timely manner, resulting in system failures; (3) When replenishing gas, manual intervention is required, which is time-consuming and laborious.

[0004] In view of this, the present utility model is specifically proposed. Content of the Utility Model

[0005] The purpose of the present utility model is to overcome the above-mentioned shortcomings of the prior art. The present utility model provides a device that integrates a pipe joint, a check valve, a pressure relay, and an electromagnetic directional valve through a valve block, and then connects a nitrogen filling trolley or a nitrogen cylinder through the pipe joint, and the other end is connected to an accumulator station to realize automatic nitrogen filling.

[0006] An automatic nitrogen filling device for an accumulator of the present utility model has nitrogen introduced at one end and is connected to an accumulator station at the other end. It includes a valve block. The two ends of the valve block are respectively connected to an inlet pipe joint and an outlet pipe joint. A check valve communicating with the inlet pipe joint and the outlet pipe joint is arranged in the middle thereof. A pressure relay and an electromagnetic directional valve are also connected to the valve block.

[0007] Furthermore, a medium through-hole and a threaded hole are provided on the check valve. The two ends of the medium through-hole are respectively communicated with the inlet pipe joint and the outlet pipe joint through the valve block. The check valve and the valve block are fixedly connected by bolts.

[0008] Further, a communication hole is formed in the valve block. The two ends of the communication hole are respectively connected to a check valve and an air outlet pipe joint. The pressure relay is arranged between the check valve and the air outlet pipe joint. A pressure hole is formed in the valve block. The pressure relay is communicated with the communication hole through the pressure hole for monitoring the nitrogen pressure in the air outlet pipe joint.

[0009] Further, the pressure relay and the electromagnetic directional control valve are electrically connected.

[0010] Further, the electromagnetic directional control valve is arranged between the air inlet pipe joint and the check valve. The nitrogen entering the air inlet pipe joint passes through the electromagnetic directional control valve and then enters the check valve.

[0011] Further, the air inlet pipe joint, the air outlet pipe joint and the valve block are respectively connected by threads.

[0012] Further, the air inlet pipe joint is connected to a nitrogen filling trolley or a nitrogen cylinder, and the air outlet pipe joint is connected to an accumulator station.

[0013] The utility model has the following advantages compared with the prior art:

[0014] 1. For an accumulator automatic nitrogen filling device of the utility model, the pressure relay can be used to monitor the pressure of the accumulator air chamber in real time, and then the electromagnetic directional control valve is electrically connected. When the nitrogen pressure in the accumulator air chamber decreases, air can be automatically supplemented, thereby reducing the labor intensity and tediousness of manual air supplementation.

[0015] 2. For an accumulator automatic nitrogen filling device of the utility model, the valve block integrates the pipe joint, the check valve, the pressure relay and the electromagnetic directional control valve, saving space and achieving the automatic nitrogen filling function. Description of the Drawings

[0016] The accompanying drawings here are incorporated into the specification and form a part of this specification, and are used together with the specification to explain the principle of the utility model.

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the accompanying drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, other accompanying drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 is a schematic structural diagram of the accumulator automatic nitrogen filling device of the utility model;

[0019] Figure 2 is a schematic principle diagram of the connection between the accumulator automatic nitrogen filling device of the utility model and the accumulator station.

[0020] Wherein: 1 - intake pipe joint; 2 - valve block; 3 - check valve; 4 - pressure relay; 5 - solenoid directional control valve; 6 - outlet pipe joint; 7 - accumulator station. Specific embodiments

[0021] The following will describe the implementation of the present utility model in detail in combination with embodiments. However, those skilled in the art will understand that the following embodiments are only used to illustrate the present invention and should not be regarded as limiting the scope of the present invention.

[0022] According to an embodiment of the present utility model, in combination with the attached Figure 1 As shown, an accumulator automatic nitrogen filling device provided by the present utility model has nitrogen introduced at one end and is connected to the accumulator station 7 at the other end. The pipe joint, check valve 3, pressure relay 4, and solenoid directional control valve 5 are integrated together through the valve block 2. The two ends of the valve block 2 are respectively connected to the intake pipe joint 1 and the outlet pipe joint 6. A check valve 3 communicating with the intake pipe joint 1 and the outlet pipe joint 6 is arranged in the middle thereof. A pressure relay 4 and a solenoid directional control valve 5 are also connected to the valve block 2.

[0023] According to an embodiment of the present utility model, a medium through-hole and a threaded hole are provided on the check valve 3. The two ends of the medium through-hole are respectively communicated with the intake pipe joint 1 and the outlet pipe joint 6 through the valve block 2. The check valve 3 and the valve block 2 are fixedly connected by bolts.

[0024] According to an embodiment of the present utility model, a communication hole is provided on the valve block 2. The two ends of the communication hole are respectively connected to the check valve 3 and the outlet pipe joint 6. The pressure relay 4 is arranged between the check valve 3 and the outlet pipe joint 6. A pressure hole is provided on the valve block 2. The pressure relay 4 is communicated with the communication hole through the pressure hole for monitoring the nitrogen pressure in the outlet pipe joint 6. Since the nitrogen pressure at the outlet pipe joint 6 is the same as the nitrogen pressure in the accumulator air chamber, therefore, by monitoring the nitrogen pressure in the outlet pipe joint 6 in real time, the nitrogen pressure in the accumulator air chamber is monitored in real time.

[0025] According to an embodiment of the present utility model, the pressure relay 4 and the solenoid directional control valve 5 are electrically connected. During normal nitrogen filling, nitrogen filling is carried out through a nitrogen filling cart. At this time, the solenoid directional control valve 5 is energized and opened. Nitrogen passes through the check valve 3 and then enters the accumulator station 7 through the air pipe. After reaching the working pressure, the pressure relay 4 outputs a power-off signal, the solenoid directional control valve 5 is de-energized, and nitrogen filling stops; after using for a period of time, when the nitrogen pressure in the accumulator drops to the alarm point of the pressure relay 4, the nitrogen filling cart is started, the solenoid directional control valve 5 is energized and opened, and the accumulator station 7 is filled with nitrogen. After reaching the working pressure, the solenoid directional control valve 5 is de-energized, and nitrogen filling stops.

[0026] According to an embodiment of the present utility model, the electromagnetic directional valve 5 is arranged between the intake pipe joint 1 and the check valve 3. The nitrogen gas entering the intake pipe joint 1 passes through the electromagnetic directional valve 5 and then enters the check valve 3. Therefore, the electromagnetic directional valve 5 here functions as a stop valve, and the electromagnetic directional valve 5 is threadedly connected to the valve block 2.

[0027] According to an embodiment of the present utility model, the intake pipe joint 1, the outlet pipe joint 6 and the valve block 2 are respectively threadedly connected.

[0028] According to an embodiment of the present utility model, the intake pipe joint 1 is connected to a nitrogen filling trolley or a nitrogen cylinder, and the outlet pipe joint 6 is connected to an accumulator station 7 through a gas pipe.

[0029] According to an embodiment of the present utility model, in combination with the attached Figure 2 As shown, when the automatic nitrogen filling device of the present utility model fills nitrogen normally, it fills nitrogen through a nitrogen filling trolley. At this time, the electromagnetic directional valve 5 is energized and opened. Nitrogen gas enters from the intake pipe joint 1, passes through the electromagnetic directional valve 5 and the check valve 3 in sequence, and then enters the accumulator station 7 through a gas pipe. After reaching the working pressure, the pressure relay 4 outputs a power-off signal, the electromagnetic directional valve 5 is de-energized, and the nitrogen gas stops filling; after using for a period of time, when the nitrogen gas pressure in the accumulator decreases to reach the alarm point of the pressure relay 4, the nitrogen filling trolley is started, the electromagnetic directional valve 5 is energized and opened, and the accumulator station 7 is filled with gas. After reaching the working pressure, the electromagnetic directional valve 5 is de-energized, and the nitrogen gas stops filling.

[0030] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0031] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

Claims

1. An automatic nitrogen charging device for an accumulator, with nitrogen introduced at one end and connected to an accumulator station (7) at the other end, characterized in that, It includes a valve block (2), with an inlet pipe connector (1) and an outlet pipe connector (6) connected to the two ends of the valve block (2) respectively. A check valve (3) communicating with the inlet pipe connector (1) and the outlet pipe connector (6) is arranged in the middle part thereof. A pressure relay (4) and a solenoid directional valve (5) are also connected to the valve block (2).

2. The nitrogen automatic filling device for the accumulator according to claim 1, characterized in that, The check valve (3) is provided with a medium through-hole and a threaded hole. The two ends of the medium through-hole are respectively communicated with the inlet pipe connector (1) and the outlet pipe connector (6) through the valve block (2). The check valve (3) is fixedly connected to the valve block (2) by bolts.

3. The nitrogen automatic filling device for the accumulator according to claim 1, wherein, A communication hole is arranged in the valve block. The two ends of the communication hole are respectively connected to the check valve (3) and the outlet pipe connector (6). The pressure relay (4) is arranged between the check valve (3) and the outlet pipe connector (6). A pressure hole is arranged in the valve block (2). The pressure relay (4) is communicated with the communication hole through the pressure hole for monitoring the nitrogen pressure in the outlet pipe connector (6).

4. The nitrogen gas automatic filling device for an accumulator according to claim 1, wherein, The pressure relay (4) and the solenoid directional valve (5) are electrically connected to each other.

5. The nitrogen gas automatic filling device for an accumulator according to claim 1, characterized in that, The solenoid directional valve (5) is arranged between the inlet pipe connector (1) and the check valve (3). The nitrogen entering the inlet pipe connector (1) passes through the solenoid directional valve (5) and then enters the check valve (3).

6. The nitrogen accumulator automatic nitrogen filling device according to claim 1, characterized in that, The inlet pipe connector (1), the outlet pipe connector (6) and the valve block (2) are respectively connected by threads.

7. The nitrogen accumulator automatic charging device according to claim 1, characterized in that, The inlet pipe connector (1) is connected to a nitrogen filling trolley or a nitrogen cylinder, and the outlet pipe connector (6) is connected to an accumulator station (7).

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