A wind bag pressure relief valve

Abstract

The utility model discloses a kind of wind bag pressure relief valves, it is related to pressure relief valve technical field, comprising: cylinder body;Protective cover, protective cover is installed on cylinder body;Piston pull rod seat, piston pull rod seat is connected with cylinder body, and piston pull rod seat is installed with piston pull rod;Piston, piston is movably connected in cylinder body, and piston pull rod is connected on piston;At least one protective component, protective component is installed in protective cover, and protective component can be automatically reset after swinging, to block the piston after pressure relief;Protective sleeve, protective sleeve is installed in the upper end of protective cover.The utility model protects protective cover and cylinder body by protective component and protective sleeve, improve the security of use.

Description

Technical Field

[0001] This utility model relates to the field of pressure relief valve technology, specifically to a wind turbine pressure relief valve. Background Technology

[0002] Air reservoir pressure relief valve is a commonly used safety device for the outlet pipeline of air reservoir (air tank) to prevent dangerous situations such as explosion caused by excessive pressure inside the air reservoir.

[0003] In existing technology, after the piston flies out, the high-pressure gas in the blower is rapidly discharged through the protective cover to achieve depressurization. After depressurization is complete, the piston falls. Since there are no protective devices in the protective cover or cylinder body, the impact force generated when the piston flies out or falls can damage the protective cover and cylinder body.

[0004] Therefore, existing pressure relief valves need to be improved. Utility Model Content

[0005] In view of this, the present invention provides a pressure relief valve for a blower to solve the technical problem that existing pressure relief valves do not provide protection for the protective cover or cylinder body, which can easily cause damage to the protective cover or cylinder body.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A pressure relief valve for an air receiver, comprising: Cylinder block; A protective cover is mounted on the cylinder block; A piston rod holder, which is connected to the cylinder body, and a piston rod is mounted on the piston rod holder; A piston, which is movably connected to the cylinder body, and a piston rod is connected to the piston; At least one protective component is installed inside the protective cover, and the protective component can automatically reset after swinging to block the piston after pressure relief; A protective sleeve is installed on the upper end of the protective cover.

[0007] Furthermore, the protective component includes: Mounting base, the mounting base being fixed to the inner wall of the protective cover; A protective baffle, which is capable of swinging around the mounting base; A tension spring is connected between the mounting base and the protective baffle.

[0008] Furthermore, the protective baffle is pivotally connected to the mounting base.

[0009] Furthermore, the protective baffle is pivotally connected to the mounting base via a connecting screw.

[0010] Furthermore, the connecting screw passes through the mounting base and the protective baffle and is then locked in place by a lock nut.

[0011] Furthermore, the mounting base includes an interconnected mounting portion and a pivot portion, the mounting portion being fixed to the inner wall of the protective cover, and the torsion portion of the protective baffle being connected to the pivot portion via the connecting screw.

[0012] Furthermore, the pivot portion has an upper limit portion and a lower limit portion for limiting the swing position of the protective baffle.

[0013] Furthermore, the lower end of the protective baffle has a downwardly extending stepped portion, which is adapted to the lower limiting portion.

[0014] Furthermore, the protective sleeve includes a protective part and a ring part connected in sequence. The protective part protects the upper end of the protective cover, and the ring part protects the side wall of the protective cover.

[0015] Furthermore, a protective pad is provided on the protective baffle.

[0016] Compared with the prior art, the beneficial effects of this utility model are: 1. To prevent damage caused by the piston's uncontrolled movement after pressure release, this utility model incorporates a protective assembly ring-shaped within the protective cover. This assembly primarily consists of a mounting base, a protective baffle, and a tension spring. The protective baffle is pivotally connected to the mounting base via a connecting screw, allowing it to swing under pressure and automatically reset under gravity to support the falling piston. During reset, the tension spring provides cushioning, reducing impact force. The protective baffle can swing to allow the piston to pass upwards, and upon reset, it blocks and supports the falling piston, preventing it from impacting the cylinder body and causing damage. Furthermore, the protective sleeve provides protection when the piston flies upwards. Therefore, this utility model provides safe protection for the cylinder body and protective cover during and after pressure release, reducing damage caused by impacts, extending service life, and enhancing operational safety. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 for Figure 1 A magnified view of part A.

[0019] Figure 3 This is a cross-sectional view of the mounting base of this utility model.

[0020] Figure 4 This is a schematic diagram of the structure of the protective baffle of this utility model.

[0021] Figure 5 This is a top sectional view of the connection between the connecting screw and the protective baffle of this utility model.

[0022] Figure 6 This is a structural schematic diagram of another embodiment of the protective baffle of this utility model.

[0023] Figure 7 This is a cross-sectional view of the protective sleeve of this utility model.

[0024] Explanation of reference numerals in the attached drawings: 1-Cylinder body; 2-Piston rod seat; 21-Piston rod; 211-Thin rod section; 3-Piston; 4-Protective cover; 41-Side release port; 42-Main release port; 5-Mounting base; 51-Mounting part; 511-First mounting hole; 512-First pull ring; 52-Pivot part; 521-First through hole; 522-Upper limit part; 523-Lower limit part; 6-Protective baffle; 61-Torsion part; 611-Second through hole; 62-Step part; 64-Second pull ring; 65-Protective pad; 7-Protective sleeve; 71-Protective part; 711-Second mounting hole; 712-Release hole; 72-Ring body part; 8-Tension spring; 9-Connecting screw; 91-Locking nut. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] refer to Figures 1 to 7 ,like Figure 1As shown, this embodiment provides a pressure relief valve for an air receiver, mainly composed of: a cylinder body 1, a protective cover 4, a piston rod seat 2, a piston 3, a protective sleeve 7, and at least one protective component. The cylinder body 1 is installed in the air receiver outlet pipe facing the airflow direction. The protective cover 4 is bolted to the upper end of the cylinder body 1. The main parts of the cylinder body 1 and the protective cover 4 are hollow cylindrical structures. The piston rod seat 2 is connected to the lower end of the cylinder body 1. A piston rod 21 is installed on the piston rod seat 2. The piston 3 is slidably connected inside the cylinder body 1 and equipped with a sealing ring to improve the sealing effect. The upper end of the piston rod 21 is connected to the piston 3. The protective component is annularly installed inside the protective cover 4. After the protective component swings, it can automatically reset to block the piston 3 after pressure relief. The protective sleeve 7 is installed on the upper end of the protective cover 4. Under normal circumstances, piston 3 maintains a sealed state between cylinder body 1 and protective cover 4 under the action of cylinder body 1. The top of protective cover 4 is provided with main release port 42, and the side wall is provided with side release port 41. The middle part of piston rod 21 has a thin rod section 211. When the air compressor system is working normally, the system pressure is ≤0.785 (8kgf / cm²). Under this pressure, the pressure relief valve works normally. When the air receiver catches fire due to carbon deposits or when the gas inside the air receiver explodes for some reason, the temperature and pressure inside the system rise instantaneously. When the pressure rises to 1.03±0.049MPa (10.5±0.5kgf / cm²), when the thin rod section 211 reaches the rod setting value, the thin rod section 211 immediately breaks off, causing piston 3 to fly out. Then the gas inside the air receiver is discharged through the side release port 41 and the main release port 42, achieving the effect of releasing pressure, mitigating the explosion shock wave, and avoiding accidents.

[0027] like Figure 2 As shown, the protective assembly mainly consists of: mounting base 5, protective baffle 6 and tension spring 8. Mounting base 5 is fixed on the inner wall of protective cover 4. When the protective baffle 6 is subjected to an upward impact, it can swing around the mounting base 5. Tension spring 8 is connected between mounting base 5 and protective baffle 6.

[0028] Preferably, the protective baffle 6 is pivotally connected to the mounting base 5.

[0029] like Figure 5 As shown, for easy disassembly, the protective baffle 6 is pivotally connected to the mounting base 5 via the connecting screw 9.

[0030] Specifically, the connecting screw 9 passes through the mounting base 5 and the protective baffle 6 and is locked by the locking nut 91. By turning the locking nut 91 in the forward or reverse direction, the connecting screw 9 and the locking nut 91 can be locked or screwed in. By loosening the locking nut 91, the connecting screw 9 can be easily removed from the mounting base 5 and the protective baffle 6, enabling quick disassembly of the parts.

[0031] like Figure 3As shown, the mounting base 5 includes a mounting part 51 and a pivot part 52 connected to each other. The mounting part 51 has an L-shaped structure. Several first mounting holes 511 are provided on the side wall of the mounting part 51. The mounting part 51 can be threadedly connected to the inner wall of the protective cover 4 through the first mounting holes 511. The pivot part 52 is integrally connected to the mounting part 51. The torsion part 61 of the protective baffle 6 is connected to the pivot part 52 through a connecting screw 9.

[0032] Preferably, the pivot portion 52 has a first through hole 521 penetrating the front and rear end faces of the pivot portion 52, and the torsion portion 61 has a second through hole 611 penetrating the front and rear end faces of the torsion portion 61. The connecting screw 9 extends forward a certain distance after passing through the first through hole 521 and the second through hole 611 to facilitate the installation of the locking nut 91. The locking nut 91 should be adjusted to an appropriate tightness. Its main function is to prevent the connecting screw 9 from coming out of the first through hole 521 and the second through hole 611, and to ensure that the protective baffle 6 can swing flexibly around the mounting base 5 when under force, rather than locking it completely.

[0033] In addition, a first pull ring 512 is provided on the side wall of the mounting part 51, and a second pull ring 64 is provided on the protective baffle 6. A tension spring 8 connects the first pull ring 512 and the second pull ring 64. The tension spring 8 acts as a buffer to prevent the protective baffle 6 from generating a large impact force on the mounting base 5 when it resets, thus avoiding a reduction in its service life. In the initial state, the tension of the tension spring 8 causes the protective baffle 6 to droop naturally, at which time the step part 62 and the lower limit part 523 are not in contact.

[0034] Preferably, the pivot portion 52 has an upper limit portion 522 and a lower limit portion 523 for limiting the swing position of the protective baffle 6. The upper limit portion 522 is used to limit the extreme position of the protective baffle 6 swinging upward, and the lower limit portion 523 is used to limit the extreme position of the protective baffle 6 swinging downward.

[0035] like Figure 4 As shown, the lower end of the protective baffle 6 has a downwardly extending step 62, which is adapted to the lower limit part 523. When the step 62 contacts the lower limit part 523, the protective baffle 6 cannot continue to swing downward, thereby achieving the effect of limiting the downward swing limit of the protective baffle 6, and thus supporting the piston 3 after pressure relief, preventing the piston 3 from falling downward under the action of gravity after pressure relief and damaging the cylinder body 1.

[0036] like Figure 7As shown, the protective sleeve 7 includes a protective part 71 and an annular part 72 connected in sequence. The protective part 71 has several second mounting holes 711 arranged in a ring shape to allow the protective sleeve 7 to be threaded onto the inner top of the protective cover 4. The protective part 71 has a release hole 712 in its center, communicating with the main release port 42, for pressure relief. The protective part 71 shields the top of the protective cover 4, protecting the inner wall of the top of the protective cover 4 and preventing the piston 3 from damaging the top of the protective cover 4 due to upward impact from high pressure during pressure relief. The annular part 72 is annular in structure, surrounding the annular sidewall of the protective cover 4, protecting the sidewall of the protective cover 4 and preventing the piston 3 from colliding or rubbing against the inner wall of the protective cover 4 during movement, thus improving the safety of pressure relief.

[0037] like Figure 6 As shown, after the pressure is released, the piston 3 drives the thin rod segment 211 to fall freely. To prevent damage to the protective baffle 6, a protective pad 65 is provided on the protective baffle 6. The protective pad 65 can be made of materials with cushioning and protective capabilities, such as sponge or rubber.

[0038] Working principle: When the pressure inside the air receiver is too high, it will have an impact force on the thin rod section 211. When the impact force reaches the set value of the pull rod of the thin rod section 211, the thin rod section 211 will break and drive the piston 3 out under the impact. Then the gas inside the air receiver will be discharged through the side release port 41 and the main release port 42. This is the pressure relief process. When the pressure is released, the piston 3 will cause the thin rod segment 211 to move upwards in an impact manner. When it moves to the protective component, since the distance between the two opposing protective baffles 6 is greater than or less than the diameter of the piston 3, the edge of the piston 3 will touch the protective baffle 6 as it moves upwards, causing the protective baffle 6 to swing upwards. The piston 3 will then cause the broken thin rod segment 211 to continue moving. At this point, the protective baffle 6 cannot continue to move upwards due to the obstruction of the upper limit part 522, and will swing downwards to reset under the action of gravity. During the downward swing, the tension of the tension spring 8 will provide a buffering effect to prevent the protective baffle 6 from having an excessive impact on the mounting base 5. Finally, the tension of the tension spring 8 will reset the protective baffle 6, and the reset process will be completed quickly after the piston 3 passes, ensuring that it can intercept and... When the step portion 62 contacts the lower limit portion 523, the protective baffle 6 is in the reset state. During the reset process of the protective baffle 6, the piston 3 continues to move upward until it touches the protective portion 71. After the pressure release is completed, the pressure inside the cylinder body 1 is balanced with the atmospheric pressure, and the piston 3 falls under its own gravity (at this time, the protective baffle 6 has been reset). Since the distance between the two opposing protective baffles 6 is greater than or less than the diameter of the piston 3, the protective baffle 6 will intercept the piston 3, causing the piston 3 to fall onto the protective baffle 6. This can prevent the piston 3 from being damaged by excessive impact force when it falls into the cylinder body 1 under gravity, thus extending the service life of the cylinder body 1 and making the pressure release process safer and more reliable.

[0039] The applicable conditions for various specifications of pressure relief valves are shown in Table 1. Table 1

[0040] The specifications and performance of the pressure relief valve are shown in Table 2.

[0041] Table 2

[0042] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A pressure relief valve for an air receiver, characterized in that, include: Cylinder block (1); A protective cover (4) is mounted on the cylinder body (1); Piston rod seat (2), the piston rod seat (2) is connected to the cylinder body (1), and a piston rod (21) is installed on the piston rod seat (2). Piston (3), the piston (3) is movably connected inside the cylinder body (1), and the piston rod (21) is connected to the piston (3); At least one protective component is installed inside the protective cover (4), and the protective component can automatically reset after swinging to block the piston (3) after pressure relief; A protective sleeve (7) is installed on the upper end of the protective cover (4).

2. The air-relief valve according to claim 1, characterized in that, The protective components include: Mounting base (5), which is fixed on the inner wall of the protective cover (4); A protective baffle (6) is capable of swinging around the mounting base (5); A tension spring (8) is connected between the mounting base (5) and the protective baffle (6).

3. The air-relief valve according to claim 2, characterized in that, The protective baffle (6) is pivotally connected to the mounting base (5).

4. The air-relief valve according to claim 3, characterized in that, The protective baffle (6) is pivotally connected to the mounting base (5) via a connecting screw (9).

5. The air-relief valve according to claim 4, characterized in that, The connecting screw (9) passes through the mounting base (5) and the protective baffle (6) and is then locked by a locking nut (91).

6. The air-relief valve according to claim 4, characterized in that, The mounting base (5) includes a mounting part (51) and a pivot part (52) connected to each other. The mounting part (51) is fixed on the inner wall of the protective cover (4). The torsion part (61) of the protective baffle (6) is connected to the pivot part (52) by the connecting screw (9).

7. The air-relief valve according to claim 6, characterized in that, The pivot portion (52) has an upper limit portion (522) and a lower limit portion (523) for limiting the swing position of the protective baffle (6).

8. The air-relief valve according to claim 7, characterized in that, The lower end of the protective baffle (6) has a downwardly extending step (62), which is adapted to the lower limiting part (523).

9. The air-relief valve according to claim 1, characterized in that, The protective sleeve (7) includes a protective part (71) and a ring part (72) connected in sequence. The protective part (71) protects the upper end of the protective cover (4), and the ring part (72) protects the side wall of the protective cover (4).

10. The air-relief valve according to claim 2, characterized in that, A protective pad (65) is provided on the protective baffle (6).

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