Corrosion-resistant self-operated micro-pressure nitrogen release valve

Abstract

The utility model discloses a corrosion-resistant self-operated micropressure nitrogen release valve, and relates to the technical field of nitrogen release valves, the corrosion-resistant self-operated micropressure nitrogen release valve comprises a valve body, the left side of the valve body is fixedly communicated with an air inlet pipe, the right side of the valve body is fixedly communicated with an air outlet pipe, and the inner wall of the valve body is fixedly connected with a fixing ring and a fixing plate. The device comprises a fixed ring, the fixed ring is located between an air inlet pipe and an air outlet pipe, a movable ring is slidably connected to the inner side of the fixed ring, a micro-relief channel is formed in the movable ring in a penetrating mode, and an upper sealing block is slidably connected to the inner side of the movable ring. The movable ring does not move, the upper sealing block on the inner side of the movable ring moves upwards, at the moment, gas is discharged through the micro-discharge channel, waste caused by excessive nitrogen discharged by the nitrogen discharge valve is avoided, and due to the arrangement of the micro-discharge channel, when the system pressure of the valve is close to a set value, gas can be released in a trace mode, and the system pressure is stabilized within an accurate range. And damage caused by excessive pressure fluctuation is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to nitrogen release valve technical field, concretely relates to a kind of corrosion-resistant self-help micro-pressure nitrogen release valve. BACKGROUND

[0002] Nitrogen sealing device is mainly composed of two parts of nitrogen supply valve and nitrogen release valve, and the nitrogen supply valve is composed of two parts of commander and main valve;The nitrogen release valve is generally composed of the pressure opening type micro-pressure regulating valve of internal feedback.When the liquid inlet valve of storage tank is opened to add material into tank, liquid level rises, gas phase part volume decreases, and pressure rises.When the pressure in the storage tank rises to the pressure setting value of the nitrogen release valve, the nitrogen release valve opens to start pressure relief, so that the pressure in the tank decreases.When the pressure in the storage tank decreases to below the pressure setting value of the nitrogen release valve, the nitrogen release valve is automatically closed, and the pressure in the storage tank is maintained within the designed safe pressure range through the nitrogen release valve, to realize the overpressure protection of the system.

[0003] By using the gas pressure inside the system, the nitrogen release valve automatically opens the valve core to perform pressure relief operation, however, the existing nitrogen release valve needs to reach a certain threshold value of gas pressure to start, and it is difficult to adjust the flow of nitrogen during the discharge process, when the device only needs to discharge a small amount of nitrogen, manual starting is required, and at the same time, excessive nitrogen is discharged during the pressure relief process of the nitrogen release valve, causing waste, based on this, the present scheme provides a kind of corrosion-resistant self-help micro-pressure nitrogen release valve to solve the above problems. UTILITY MODEL CONTENTS

[0004] To solve the above technical problems, a kind of corrosion-resistant self-help micro-pressure nitrogen release valve is provided, which solves the problems in the above background technology.

[0005] In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

[0006] A kind of corrosion-resistant self-help micro-pressure nitrogen release valve, including valve body, the valve body is fixedly installed at the upper end of base, the top of the valve body is threadedly connected with top seat, the top of the top seat is fixedly connected with fixed rod, the left side of the valve body is fixedly connected with inlet pipe, the right side of the valve body is fixedly connected with outlet pipe, the inner wall of the valve body is fixedly connected with fixed ring and fixed plate, the fixed ring is located between inlet pipe and outlet pipe, and the inner side of the fixed ring is slidably connected with moving ring, the inside of the moving ring is penetrated to be provided with micro-release channel, and the inner side of the moving ring is slidably connected with upper sealing block.

[0007] Preferably, the left end of the inlet pipe is fixedly connected with connecting pipe, the outer side of the connecting pipe is fixedly installed with pressure monitoring table, the inside of the connecting pipe is provided with ball valve, and the top of the ball valve is provided with ball valve switch.

[0008] Preferably, the valve body, the air inlet pipe, the connecting pipe and the air outlet pipe are made of titanium alloy, and the surfaces thereof are plated with zinc plating protective films.

[0009] Preferably, the top end of the moving ring is fixedly connected with a connecting rod, the other end of the connecting rod is slidably connected with a fixed plate and extends out to be fixedly connected with the lower end of the first spring, and the upper end of the first spring abuts against the inner wall of the top base.

[0010] Preferably, the upper end of the upper sealing block is fixedly connected with a sliding rod, the other end of the sliding rod is slidably connected with a horizontal plate and extends out to be fixedly connected with the lower end of the limiting plate, the horizontal plate is fixedly connected to the surface of the connecting rod, the outer side of the sliding rod is sleeved with a second spring, and the two ends of the second spring are fixedly connected with the lower end of the horizontal plate and the upper end of the upper sealing block, respectively.

[0011] Preferably, the surface of the sliding rod is fixedly connected with a limiting block, the limiting block is arranged on the lower side of the horizontal plate, and the diameter size of the limiting block is smaller than the diameter size of the second spring.

[0012] Compared with the prior art, the utility model provides a kind of corrosion-resistant self force formula micro pressure relief nitrogen valve, with the following beneficial effects:

[0013] In the utility model, when needing to carry out pressure relief operation, gas enters the downside of valve body through air inlet pipe, at this time, the gas pressure is small, moving ring is not moved, and upper sealing block in its inner side moves upward, at this time, upper sealing block moves upward as a whole to press second spring, until second spring is flat with gas pressure, at this time, upper sealing block no longer blocks micro leakage passage, so that gas is discharged through micro leakage passage, avoid waste caused by nitrogen valve to discharge excessive nitrogen, the setting of micro leakage passage makes valve can release gas in trace when system pressure is close to set value, system pressure is stabilized in an accurate range, so as to control pressure fluctuation, avoid pressure sudden increase, in long time running process, through micro pressure relief mode, system instability or equipment damage caused by excessive pressure fluctuation is avoided;When gas pressure continues to increase, upper sealing block moves rapidly, until limiting block contacts with horizontal plate, gas pressure lifts moving ring, so that air inlet pipe and air outlet pipe are communicated, to realize rapid pressure relief. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is overall structure schematic diagram of the utility model;

[0015] Figure 2 It is internal structure schematic diagram of valve body in the utility model;

[0016] Figure 3 It is the utility model Figure 2 A structure enlarged schematic diagram in the utility model.

[0017] Reference signs in the drawings are:

[0018] 1, valve body; 2, base; 3, top seat; 301, fixed rod; 4, air inlet pipe; 5, connecting pipe; 6, ball valve switch; 601, ball valve; 7, pressure monitoring table; 8, air outlet pipe; 9, fixed ring; 10, fixed plate; 11, first spring; 12, connecting rod; 13, cross plate; 14, moving ring; 15, micro leakage channel; 16, upper sealing block; 18, sliding rod; 1801, limiting plate; 19, second spring; 20, limiting block. DETAILED DESCRIPTION

[0019] The following description is used to disclose the utility model so that those skilled in the art can implement the utility model. The preferred embodiments in the following description are only as examples, and other obvious variants can be thought of by those skilled in the art.

[0020] With reference to Figures 1-3 As shown in the figure, a kind of corrosion-resistant self-help micro-pressure relief nitrogen valve, including valve body 1, valve body 1 is fixedly installed at the upper end of base 2, the top end of valve body 1 is threadedly connected with top seat 3, the top end of top seat 3 is fixedly connected with fixed rod 301, the left side of valve body 1 is fixedly connected with air inlet pipe 4, the right side of valve body 1 is fixedly connected with air outlet pipe 8, the inner wall of valve body 1 is fixedly connected with fixed ring 9 and fixed plate 10, fixed ring 9 is located between air inlet pipe 4 and air outlet pipe 8, and the inner side of fixed ring 9 is slidably connected with moving ring 14, micro leakage channel 15 is formed in the inside of moving ring 14, and the inner side of moving ring 14 is slidably connected with upper sealing block 16. When the device is used, gas enters the lower side of valve body 1 through air inlet pipe 4, at this time, the gas pressure is small, moving ring 14 does not move, and upper sealing block 16 on its inner side moves upward, so that the gas is discharged through micro leakage channel 15, avoiding waste caused by excessive nitrogen discharge of nitrogen relief valve, and when the gas pressure is large, moving ring 14 is lifted by the gas pressure, so that air inlet pipe 4 and air outlet pipe 8 are connected, so as to realize rapid pressure relief.

[0021] Specifically, in the embodiment, the left end of air inlet pipe 4 is fixedly connected with connecting pipe 5, pressure monitoring table 7 is fixedly installed on the outer side of connecting pipe 5, ball valve 601 is arranged in the inside of connecting pipe 5, ball valve switch 6 is arranged at the top end of ball valve 601, rotating ball valve switch 6 can make ball valve 601 open or close, so that nitrogen can pass through connecting pipe 5 or not, and pressure monitoring table 7 can effectively detect the pressure in the inside of connecting pipe 110 through the built-in air pressure sensor.

[0022] Specifically, in this embodiment, the valve body 1, the air inlet pipe 4, the connecting pipe 5 and the air outlet pipe 8 are made of titanium alloy, and the surfaces thereof are galvanized with a protective film. The valve body 1, the air inlet pipe 4, the connecting pipe 5 and the air outlet pipe 8 are made of titanium alloy, and the surfaces thereof are galvanized with a protective film. Titanium alloy has excellent corrosion resistance, and the galvanized zinc layer on the metal surface forms a dense zinc oxide film, which can effectively isolate the corrosion factors such as oxygen and moisture, thereby reducing the corrosion rate of the metal substrate, protecting the metal, preventing oxidation and corrosion, further improving the overall corrosion resistance of the device, ensuring long-term use of the equipment in a corrosive environment, and the galvanized zinc layer is a conventional corrosion prevention method in industrial production, which will not be described in detail here.

[0023] Specifically, in this embodiment, the top end of the moving ring 14 is fixedly connected with the connecting rod 12, the other end of the connecting rod 12 is slidingly connected with the fixed plate 10 and extends out to be fixedly connected with the lower end of the first spring 11, and the upper end of the first spring 11 abuts against the inner wall of the top base 3.

[0024] Specifically, in this embodiment, the upper end of the upper sealing block 16 is fixedly connected with the sliding rod 18, the other end of the sliding rod 18 is slidingly connected with the horizontal plate 13 and extends out to be fixedly connected with the lower end of the limiting plate 1801, the horizontal plate 13 is fixedly connected to the surface of the connecting rod 12, the outer side of the sliding rod 18 is sleeved with the second spring 19, and the two ends of the second spring 19 are respectively fixedly connected with the lower end of the horizontal plate 13 and the upper end of the upper sealing block 16. When the pressure relief operation is needed, the gas enters the lower side of the valve body 1 through the air inlet pipe 4, at this time, the gas pressure is small, so that the moving ring 14 is not moved and the upper sealing block 16 inside the moving ring 14 moves upward, at this time, the upper sealing block 16 moves upward as a whole to press the second spring 19, until the second spring 19 is balanced with the gas pressure, at this time, the upper sealing block 16 no longer blocks the micro leakage passage 15, so that the gas is discharged through the micro leakage passage 15, avoiding waste caused by the nitrogen valve discharging excessive nitrogen, the setting of the micro leakage passage 15 enables the valve to release a small amount of gas when the system pressure approaches the set value, so as to stabilize the system pressure in an accurate range, thereby controlling the pressure fluctuation and avoiding sudden pressure increase. Through the micro pressure relief mode, the system instability or equipment damage caused by excessive pressure fluctuation is avoided during a long time operation; when the gas pressure continuously increases, the upper sealing block 16 moves rapidly until the limiting block 20 contacts with the horizontal plate 13, so that the gas pressure lifts up the moving ring 14, thereby enabling the air inlet pipe 4 and the air outlet pipe 8 to be communicated, so as to realize rapid pressure relief.

[0025] Specifically, in this embodiment, the surface of the sliding rod 18 is fixedly connected with the limiting block 20, the limiting block 20 is arranged on the lower side of the horizontal plate 13, and the diameter size of the limiting block 20 is smaller than the diameter size of the second spring 19. The limiting block 20 is responsible for limiting the sliding rod 18 and plays a role in protecting the second spring 19.

[0026] The working principle of the utility model is: when needing to carry out pressure relief operation, rotating the ball valve switch 6 can make the ball valve 601 open, so that nitrogen can pass through the connecting pipe 5 and enter the downside of the valve body 1 through the air inlet pipe 4, and the pressure detection table 7 can effectively detect the pressure of the gas in the connecting pipe 110 through the built-in air pressure sensor;

[0027] At this time, the gas pressure is small, the moving ring 14 does not move and the upper sealing block 16 in the inner side thereof moves upward, at this time, the upper sealing block 16 moves upward as a whole and further extrudes the second spring 19, until the second spring 19 is leveled with the gas pressure, at this time, the upper sealing block 16 no longer blocks the micro leakage passage 15, so that the gas is discharged through the micro leakage passage 15, avoiding waste caused by the excessive nitrogen discharge of the nitrogen release valve, when the gas pressure continuously increases, the upper sealing block 16 moves rapidly, until the limiting block 20 contacts with the horizontal plate 13, so that the gas pressure lifts the moving ring 14, so that the air inlet pipe 4 and the air outlet pipe 8 are connected, so as to realize rapid pressure relief.

[0028] The device is provided with the micro leakage passage 15, so that when the valve is close to the set value of the system pressure, the gas can be released in a small amount, the system pressure is stabilized in an accurate range, so as to control the pressure fluctuation and avoid the sudden increase of the pressure, in the long-time operation process, through the micro pressure relief mode, the system instability or equipment damage caused by the too large pressure fluctuation is avoided.

[0029] The above shows and describes the basic principle, main features and advantages of the utility model. The skilled in the art should understand that the utility model is not limited by the above embodiments, the above embodiments and the description in the specification are only the principles of the utility model, various changes and improvements of the utility model can be made without departing from the spirit and scope of the utility model, and these changes and improvements all fall into the scope of the utility model claimed for protection. The protection scope required by the utility model is defined by the appended claims and their equivalents.

Claims

1. A corrosion resistant, self-contained, microleakage nitrogen valve characterized by, Including the valve body (1), the valve body (1) is fixedly installed on the upper end of the base (2), the top end of the valve body (1) is threadedly connected with the top seat (3), the top end of the top seat (3) is fixedly connected with the fixed rod (301), the left side of the valve body (1) is fixedly communicated with the air inlet pipe (4), the right side of the valve body (1) is fixedly communicated with the air outlet pipe (8), the inner wall of the valve body (1) is fixedly connected with the fixed ring (9) and the fixed plate (10), the fixed ring (9) is located between the air inlet pipe (4) and the air outlet pipe (8), and the inner side of the fixed ring (9) is slidably connected with the moving ring (14), the inside of the moving ring (14) is penetrated with the micro leakage passage (15), and the inner side of the moving ring (14) is slidably connected with the upper sealing block (16).

2. A corrosion resistant, self-contained, microleakage nitrogen valve according to claim 1, characterized in that: The left end of the air inlet pipe (4) is fixedly communicated with the connecting pipe (5), the outer side of the connecting pipe (5) is fixedly installed with the pressure monitoring table (7), the inside of the connecting pipe (5) is provided with the ball valve (601), and the top end of the ball valve (601) is provided with the ball valve switch (6).

3. A corrosion resistant, self-contained, microleakage nitrogen valve according to claim 2, wherein: The materials of the valve body (1), the air inlet pipe (4), the connecting pipe (5) and the air outlet pipe (8) are titanium alloy, and the surfaces are all galvanized with zinc protective film.

4. The corrosion resistant, self-contained, microleakage nitrogen valve of claim 1, wherein: The top end of the moving ring (14) is fixedly connected with the connecting rod (12), the other end of the connecting rod (12) is slidably connected with the fixed plate (10) and extends out to be fixedly connected with the lower end of the first spring (11), and the upper end of the first spring (11) abuts against the inner wall of the top seat (3).

5. A corrosion resistant, self-contained, microleakage nitrogen valve according to claim 4, wherein: The upper end of the upper sealing block (16) is fixedly connected with the sliding rod (18), the other end of the sliding rod (18) is slidably connected with the cross plate (13) and extends out to be fixedly connected with the lower end of the limiting plate (1801), the cross plate (13) is fixedly connected on the surface of the connecting rod (12), the outer side of the sliding rod (18) is sleeved with the second spring (19), and the two ends of the second spring (19) are fixedly connected with the lower end of the cross plate (13) and the upper end of the upper sealing block (16) respectively.

6. A corrosion resistant, self-contained, microleakage nitrogen valve according to claim 5, wherein: The surface of the sliding rod (18) is fixedly connected with the limiting block (20), the limiting block (20) is arranged on the lower side of the cross plate (13), and the diameter size of the limiting block (20) is smaller than the diameter size of the second spring (19).

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