CN215754364U - Double-flange pressure relief device - Google Patents

Abstract

The utility model belongs to the technical field of pressure relief, and discloses a double-flange pressure relief device which comprises a material level container and two connecting pipes, wherein the two connecting pipes are fixedly connected to the right side of the material level container, are symmetrically distributed at the upper part and the lower part and are communicated with the material level container, a negative pressure primary valve is fixedly arranged inside the connecting pipe at the top part, a positive pressure primary valve is fixedly arranged inside the connecting pipe at the bottom part, flange short circuits are fixedly communicated with the right ends of the two connecting pipes, a double-flange liquid level meter is fixedly arranged between the right sides of the two flange short circuits, vent valves are fixedly connected at the bottoms of the two flange short circuits, the condition that a double-flange diaphragm box is pressed is avoided by opening the vent valves for pressure relief, low-pressure operation of instrument operators during verification and maintenance can be facilitated, the operators and gaskets are prevented from being damaged by pressure, the operators and the gaskets are prevented from being damaged, and the gaskets are reduced, and the maintenance cost is saved.

Description

Double-flange pressure relief device

Technical Field

The utility model relates to the technical field of pressure relief, in particular to a double-flange pressure relief device.

Background

In the chemical production link, a double-flange liquid level meter is respectively provided with a pressure measuring point at the upper part and the lower part in a hydraulic tank, the upper end position measures negative pressure, the lower end position measures positive pressure, and then the liquid level in the tank is measured and calculated; the pressure measuring device is characterized in that a flange valve is arranged at a port of the pressure measuring instrument, after the valve needs to be closed in the checking process, a running-in bolt is loosened for calibration, the top end of a diaphragm box of the pressure measuring device still has pressure, and the pressure still exists when the pressure measuring device is dismounted, so that great danger is realized, and the installation gasket needs to be updated after the pressure relief of the bolt is dismounted, so that the cost is increased.

SUMMERY OF THE UTILITY MODEL

1. Technical problem to be solved

Aiming at the problems in the prior art, the utility model aims to provide a double-flange pressure relief device, which avoids the situation that a double-flange diaphragm box is pressurized by opening an air release valve for pressure relief, can facilitate low-pressure operation of instrument operators during verification and maintenance, avoids hurting people and replacing a gasket by operating under pressure, avoids hurting people, reduces the replacement of the gasket and saves the maintenance cost.

2. Technical scheme

In order to solve the above problems, the present invention adopts the following technical solutions.

The utility model provides a two flange pressure relief device, includes level container and two connecting pipes, two the equal fixed connection of connecting pipe is on the right side of level container, two be symmetric distribution about the connecting pipe and with level container intercommunication, the top the inside fixed mounting of connecting pipe has a negative pressure primary valve, the bottom the inside fixed mounting of connecting pipe has a malleation primary valve, two the equal fixed intercommunication of right-hand member of connecting pipe has the flange short circuit, two fixed mounting has two flange level gauges, two between the right side of flange short circuit the equal fixedly connected with atmospheric valve in bottom of flange short circuit.

As a further scheme of the utility model: the top intercommunication of flange short circuit has the filling tube, the bottom of filling tube runs through and extends to the inside of flange short circuit, the bottom fixedly connected with spray thrower of filling tube, the sealed diaphragm of spray thrower orientation double flange level gauge, the top threaded connection sealing cap of filling tube.

As a further scheme of the utility model: the inside of sealing cap is provided with sealed the pad, sealed the top of hugging closely the injection tube when sealing cap screws up in the bottom of filling up.

As a further scheme of the utility model: the negative pressure primary valve, the positive pressure primary valve, the injection pipe and the sprayer are all made of stainless steel materials, and the inner surfaces of the negative pressure primary valve, the positive pressure primary valve, the injection pipe and the sprayer are coated with corrosion-resistant layers.

3. Advantageous effects

Compared with the prior art, the utility model has the advantages that:

(1) this scheme is through negative pressure primary valve survey negative pressure, malleation primary valve surveys the malleation, then calculate the inside liquid level of level container through two flange level meters, increase the flange short circuit behind negative pressure primary valve and malleation primary valve, the centre of flange short circuit bottom is provided with the blow-off valve, after excision negative pressure primary valve and malleation primary valve, can open through opening the blow-off valve, carry out the pressure release to the flange short circuit and avoid the condition that two flange diaphragm boxes were pressed, can make things convenient for instrument operation personnel low pressure operation when carrying out check-up and maintenance, avoid pressing the operation injury people and change the gasket, avoid hindering the people and reduce and change the gasket, practice thrift cost of maintenance.

(2) This scheme is when the double flange level gauge is used for the solution storage tank, when live time is too of a specified duration or temperature reduces, can form the crystallization on sealed diaphragm, lead to detecting the liquid level distortion, the serious conditions leads to the unable detection of liquid level, can twist off sealed cap this moment, use the syringe that is equipped with the washing liquid, to the inside injection washing liquid of injection tube, the washing liquid sprays through the spray thrower and washs the crystallization that will form on the sealed diaphragm of double flange level gauge, and discharge from the atmospheric valve, the problem that the liquid level detection distortion can't detect even after having solved and forming the crystallization on sealed diaphragm.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic cross-sectional view of a flange short according to the present invention;

FIG. 3 is an enlarged view of the utility model at A in FIG. 2.

The reference numbers in the figures illustrate:

1. a level vessel; 2. a connecting pipe; 3. a negative pressure primary valve; 4. a positive pressure primary valve; 5. a flange short circuit; 6. a double flange level gauge; 7. an atmospheric valve; 8. an injection pipe; 9. a sprayer; 10. a sealing cap; 11. and a gasket.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Please refer to fig. 1-3, a double-flange pressure relief device, comprising a level container 1 and two connecting pipes 2, wherein the two connecting pipes 2 are fixedly connected to the right side of the level container 1, the two connecting pipes 2 are symmetrically distributed up and down and are communicated with the level container 1, a negative pressure primary valve 3 is fixedly installed inside the connecting pipe 2 at the top, a positive pressure primary valve 4 is fixedly installed inside the connecting pipe 2 at the bottom, flange short circuits 5 are fixedly communicated with the right ends of the two connecting pipes 2, a double-flange liquid level meter 6 is fixedly installed between the right sides of the two flange short circuits 5, and vent valves 7 are fixedly connected to the bottoms of the two flange short circuits 5.

Further, the top of the flange short joint 5 is communicated with an injection pipe 8, the bottom end of the injection pipe 8 penetrates through and extends into the flange short joint 5, the bottom end of the injection pipe 8 is fixedly connected with a sprayer 9, the sprayer 9 faces to a sealing diaphragm of the double-flange liquid level meter 6, the top end of the injection pipe 8 is in threaded connection with a sealing cap 10, when the double-flange liquid level meter 6 is used for a solution storage tank, crystals can be formed on the sealing diaphragm when the double-flange liquid level meter is used for a long time or the temperature is reduced, so that the detection liquid level is distorted, and the liquid level can not be detected under severe conditions, at the moment, the sealing cap 10 can be unscrewed, an injector filled with cleaning liquid is used for injecting the cleaning liquid into the injection pipe 8, the cleaning liquid is sprayed by the sprayer 9 to clean the crystals formed on the sealing diaphragm of the double-flange liquid level meter 6, and is discharged from the emptying valve 7, so that the problem that the liquid level detection is distorted even cannot be detected after crystals are formed on the sealing diaphragm is solved.

Furthermore, the inside of sealing cap 10 is provided with sealed 11, and the top of injection pipe 8 is hugged closely when sealing cap 10 is screwed down to the bottom of sealed 11, when will injecting through sealing cap 10 the shutoff of 8 tops of pipes, can further play sealed effect through sealed 11, improves the leakproofness.

Further, the negative pressure primary valve 3, the positive pressure primary valve 4, the injection pipe 8 and the sprayer 9 are all stainless steel components, the inner surfaces of the two negative pressure primary valves 3, the positive pressure primary valve 4, the injection pipe 8 and the sprayer 9 are all coated with corrosion-resistant layers, the negative pressure primary valve 3, the positive pressure primary valve 4, the injection pipe 8 and the sprayer 9 are all stainless steel components which are resistant to weak corrosion such as air, steam and water and are not easy to damage, and the inner surfaces are coated with corrosion-resistant layers, so that the corrosion resistance is further improved, and the service life is further prolonged.

The working principle is as follows: when the pressure-relief type double-flange diaphragm capsule pressure gauge is used, negative pressure is measured through the negative pressure primary valve 3, positive pressure is measured through the positive pressure primary valve 4, then the liquid level inside the level container 1 is measured through the double-flange liquid level gauge 6, the flange short circuit 5 is added behind the negative pressure primary valve 3 and the positive pressure primary valve 4, the vent valve 7 is arranged in the middle of the bottom of the flange short circuit 5, after the negative pressure primary valve 3 and the positive pressure primary valve 4 are cut off, the vent valve 7 can be opened to relieve the pressure of the flange short circuit 5 to avoid the situation that the double-flange diaphragm capsule is pressed, low-pressure operation can be facilitated for instrument operators during checking and maintenance, people are prevented from being injured by pressure, the gasket is prevented from being replaced, and the maintenance cost is saved.

The foregoing is only a preferred embodiment of the present invention; the scope of the utility model is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.

Claims (4)

1. A double-flange pressure relief device comprises a level container (1) and two connecting pipes (2), and is characterized in that: two equal fixed connection of connecting pipe (2) is on the right side of level container (1), two connecting pipe (2) be symmetric distribution from top to bottom and with level container (1) intercommunication, the top the inside fixed mounting of connecting pipe (2) has valve (3), the bottom valve (4), two of malleation are once installed to the inside fixed mounting of connecting pipe (2) the equal fixed intercommunication of right-hand member of connecting pipe (2) has flange short circuit (5), two fixed mounting has two flange level gauges (6), two between the right side of flange short circuit (5) the equal fixedly connected with atmospheric valve (7) in bottom of flange short circuit (5).

2. The dual flange pressure relief device of claim 1, wherein: the top intercommunication of flange short circuit (5) has injection pipe (8), the bottom of injection pipe (8) runs through and extends to the inside of flange short circuit (5), the bottom fixedly connected with spray thrower (9) of injection pipe (8), spray thrower (9) are towards the sealed diaphragm of two flange level gauges (6), the top threaded connection sealing cap (10) of injection pipe (8).

3. The dual flange pressure relief device of claim 2, wherein: the inside of sealing cap (10) is provided with sealed pad (11), the top of filling tube (8) is hugged closely when sealing cap (10) are screwed up to the bottom of sealed pad (11).

4. The dual flange pressure relief device of claim 2, wherein: the negative pressure primary valve (3), the positive pressure primary valve (4), the injection pipe (8) and the sprayer (9) are all stainless steel components, and the inner surfaces of the negative pressure primary valve (3), the positive pressure primary valve (4), the injection pipe (8) and the sprayer (9) are all coated with corrosion-resistant layers.

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