Positive and negative pressure two-way pressure relief device for large pipeline

Abstract

The positive and negative pressure bidirectional pressure relief device comprises a pressure relief bin and two pressure relief doors, the pressure relief bin is arranged on the outer side of the wall of the pipeline and communicated with the interior of the pipeline, a positive pressure relief hole is formed in the upper surface of the pressure relief bin, and a pressure relief door is hinged to the outer side of the positive pressure relief hole. A negative pressure relief hole is formed in the lower surface of the pressure relief bin, another pressure relief door is hinged to the inner side of the negative pressure relief hole, the pressure relief door comprises a sealing cover plate, a balancing weight and a sealing rubber strip, the sealing cover plate is hinged to the bin wall of the pressure relief bin, the balancing weight is arranged on the upper surface away from the hinged position, and a circle of sealing rubber strip is arranged on the lower surface; the upper end and the lower end of the sealing frame protrude out of the wall of the pressure relief bin. The sealing rubber strip is tightly matched with the protruding face of the sealing frame. According to the utility model, the positive pressure relief opening and the negative pressure relief opening are integrated on the same pressure relief structure, so that the arrangement space is saved, and meanwhile, bidirectional pressure relief is realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to a pipeline pressure relief technical field, concretely relates to a large -scale pipeline positive and negative pressure two -way pressure relief device. BACKGROUND

[0002] The pressure relief door is an important safety equipment, and the technology is mainly applied to large pipelines such as gas turbine intake systems.The function of the pressure relief door is to open in time to release excess pressure when the pressure in the system reaches the set maximum value, so that the pressure inside the system is maintained within a safe range, and the pressure does not exceed the upper limit of the equipment, so as to protect the equipment from damage.

[0003] The gas turbine intake system is a large pipeline, and a larger pressure relief area is required.The existing structure is mainly one-way pressure relief structure, and it is difficult to arrange a two-way pressure relief structure in the pipeline due to space limitations. UTILITY MODEL CONTENTS

[0004] The utility model provides a large -scale pipeline positive and negative pressure two -way pressure relief device, integrates the positive pressure relief port and the negative pressure relief port on the same pressure relief structure, saves the arrangement space, and realizes two -way pressure relief.

[0005] To achieve the above technical purpose, the utility model adopts the technical scheme that:

[0006] A large -scale pipeline positive and negative pressure two -way pressure relief device, including pressure relief storehouse, two pressure relief doors, pressure relief storehouse sets up at the outside of pipeline wall, with the inside of pipeline intercommunication, the upper surface of pressure relief storehouse is set up with the positive pressure relief hole and is hinged with a pressure relief door outside the positive pressure relief hole, the lower surface of pressure relief storehouse is set up with the negative pressure relief hole and is hinged with another pressure relief door inside the negative pressure relief hole, the pressure relief door includes sealing cover plate, counterweight, sealing rubber strip, sealing cover plate is hinged with the storehouse wall, the upper surface is away from the hinged place and is equipped with counterweight, the lower surface is equipped with a circle sealing rubber strip, the positive pressure relief hole, the negative pressure relief hole is equipped with the sealing frame around, the sealing frame protrudes on the storehouse wall on the two ends, and the sealing rubber strip is tightly matched with the protruding surface of the sealing frame.

[0007] Further, the sealing frame is annular, and the two ends are provided with outwardly extending flanges, which are tightly matched with the sealing rubber strip.

[0008] Further, the sealing cover plate edge is provided with a circle of limiting baffle, and the limiting baffle is overlapped with the storehouse wall.

[0009] Further, the hinged position of the pressure relief door and the pressure relief storehouse is the highest point of the side storehouse wall.

[0010] Further, the upper surface of the pressure relief storehouse is inclined, and the lower surface is horizontal.

[0011] Compared with the prior art, the utility model has the beneficial effects that:

[0012] 1, arrangement space: the utility model discloses the positive pressure pressure release port and negative pressure pressure release port are integrated on the same pressure release store structure, save the arrangement space, realize two -way pressure release.

[0013] 2, processing difficulty: the utility model discloses the sealing structure is constituted by sealing cover, sealing rubber strip and sealing frame, utilizes the close cooperation of sealing rubber strip and sealing frame with gravity, reaches the sealing effect while the processing difficulty of workpiece is not high, is more suitable for the processing preparation of large -scale workpiece, such as gas turbine air intake pipeline pressure release.

[0014] 3, counterweight: the pressure release door of the utility model adopts the hinge structure, greatly reduces the weight of counterweight block, and it is easier to reset after the opening of the pressure release door. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments, it should be understood that the following drawings only show some embodiments of the present application, therefore should not be regarded as the limitation to the scope, for the ordinary skilled person in the art, under the premise of not paying the creative labor, can also obtain other related drawings according to these drawings.

[0016] Figure 1 It is the positive pressure pressure release structure schematic view of the utility model;

[0017] Figure 2 It is the negative pressure pressure release structure schematic view of the utility model;

[0018] Figure 3 It is Figure 1 The enlarged structure schematic view of partial A in middle;

[0019] In the drawing: 1-counterweight block, 2-sealing cover, 3-sealing rubber strip, 4-limiting baffle, 5-sealing frame, 6-positive pressure release hole, 7-negative pressure release hole, 8-pressure release store, 9-pipeline. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantage of the embodiments of the present application more clear, the following will combine the drawings in the embodiments of the present application, the technical scheme in the embodiments of the present application is clearly and completely described, obviously, the described embodiments are the part of the embodiments of the present application, not all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0021] In the description of the embodiments of this application, it should be noted that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the product of this application is usually placed in when in use, or the orientation or positional relationship that is commonly understood by those skilled in the art. It is only for the convenience of describing this application and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application.

[0022] In the description of the embodiments of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0023] As shown in the figure, a large-scale bidirectional pressure relief device for pipelines includes a pressure relief chamber 8 and two pressure relief valves. The pressure relief chamber 8 is located on the outside of the pipe wall 9 and communicates with the inside of the pipe 9. The upper surface of the pressure relief chamber 8 is inclined and has a positive pressure relief hole 6. A pressure relief valve, which is a positive pressure valve, is hinged to the outside of the positive pressure relief hole 6. Figure 1 As shown, the pressure relief chamber 8 can be opened to the outside. When the internal pressure of the pipeline 9 reaches the design value, the internal pressure of the pipeline 9 is greater than the external pressure, and the positive pressure valve opens to release the internal pressure of the pipeline 9. The lower surface of the pressure relief chamber 8 is a horizontal plane, and a negative pressure relief hole 7 is provided. Another pressure relief valve is hinged inside the negative pressure relief hole 7, which is a negative pressure valve. Figure 2 As shown, the pressure relief chamber 8 can be opened to the inside. When the internal pressure of pipe 9 drops to the design value, the internal pressure of pipe 9 is less than the external pressure, and the negative pressure valve opens to balance the internal pressure of pipe 9. Figure 3 As shown, the pressure relief door includes a sealing cover plate 2, a counterweight block 1, and a sealing strip 3. The sealing cover plate 2 is hinged to the wall of the pressure relief chamber 8. The counterweight block 1 is located on the upper surface away from the hinge. The weight of the counterweight block 1 is selected according to the design pressure value for positive or negative pressure opening. A sealing strip 3 is provided on the lower surface of the sealing cover plate 2. A sealing frame 5 is provided around the positive pressure relief hole 6 and the negative pressure relief hole 7. The sealing frame 5 is annular, with its upper and lower ends protruding from the wall of the pressure relief chamber 8 and having outwardly extending flanges. The flanges and the sealing strip 3 achieve a tight fit under the action of the counterweight block 1 and the weight of the pressure relief door itself.

[0024] Preferably, the hinge position between the pressure relief door and the pressure relief chamber 8 is the highest point of the side chamber wall, so the counterweight 1 is located at the lowest point of the pressure relief door. This can greatly reduce the weight of the counterweight and make it easier to reset the pressure relief door after it is opened.

[0025] Preferably, the sealing cover plate 2 is provided with a limiting baffle 4 at the edge, and the limiting baffle 4 is overlapped with the wall of the pressure relief bin 8.

[0026] Of course, the present application can have other various embodiments, and those skilled in the art can make various corresponding changes and modifications according to the present application without departing from the spirit and essence of the present application, but these corresponding changes and modifications should belong to the protection scope of the claims attached to the present application.

Claims

1. A large pipe positive and negative pressure two-way pressure relief device, characterized in that: The pressure relief bin (8) is arranged outside the wall of the pipeline (9) and communicates with the inside of the pipeline (9), a positive pressure relief hole (6) is arranged on the upper surface of the pressure relief bin (8), and a pressure relief door is hinged outside the positive pressure relief hole (6); a negative pressure relief hole (7) is arranged on the lower surface of the pressure relief bin (8), and another pressure relief door is hinged inside the negative pressure relief hole (7); the pressure relief door comprises a sealing cover plate (2), a counterweight (1) and a sealing rubber strip (3), the sealing cover plate (2) is hinged to the bin wall of the pressure relief bin (8), the upper surface of the sealing cover plate (2) is provided with the counterweight (1) away from the hinged position, and the lower surface of the sealing cover plate (2) is provided with a ring of sealing rubber strips (3); a sealing frame (5) is arranged around the positive pressure relief hole (6) and the negative pressure relief hole (7), the upper end and the lower end of the sealing frame (5) protrude from the bin wall of the pressure relief bin (8), and the sealing rubber strip (3) is tightly matched with the protruding surface of the sealing frame (5).

2. The large pipe positive and negative pressure bidirectional pressure relief device according to claim 1, characterized in that: The sealing frame (5) is annular, and the two ends are provided with outwardly extending flanges which are tightly matched with the sealing rubber strip (3).

3. The large pipe positive and negative pressure bidirectional pressure relief device according to claim 1 or 2, characterized in that: The edge of the sealing cover plate (2) is provided with a ring of limiting baffle plates (4) which are overlapped with the bin wall of the pressure relief bin (8).

4. The large pipe positive and negative pressure bidirectional pressure relief device according to claim 1, characterized in that: The hinged position of the pressure relief door and the pressure relief bin (8) is the highest point of the bin wall.

5. The large pipe positive and negative pressure bidirectional pressure relief device according to claim 4, characterized in that: The upper surface of the pressure relief bin is inclined, and the lower surface is horizontal.

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