Rotary quick-opening device for pressure vessel

Abstract

A rotary quick-opening device for a pressure vessel comprises a rotating mechanism and a lifting mechanism, and is characterized by further comprising a manhole cover, a manhole seat, a sealing structure and a wear-resistant structure, the rotating mechanism is arranged above the manhole cover and is used for driving the manhole cover to rotate around the axis of the manhole seat; the lifting mechanism is arranged above the manhole cover and is used for driving the manhole cover to be far away from or close to the manhole seat; the sealing structure is arranged in the manhole seat and is used for sealing the lower contact surface of the manhole seat and the manhole cover; and the wear-resistant structure is arranged on the contact surface of the manhole cover and the manhole seat. The wear-resistant structure is arranged between the manhole cover and the manhole seat, so that the problem that a gap between the manhole cover and the manhole seat is too large due to wear of the quick-opening device of the high-pressure pressure-bearing container under the working condition of frequent opening can be solved, and the wear is reduced while the wear-resistant structure is convenient to replace after being excessively worn.

Description

TECHNICAL FIELD

[0001] The utility model relates to heat exchanger equipment processing and manufacturing technical field, concretely relates to a pressure vessel rotary quick opening device. BACKGROUND

[0002] Due to having opening flexible, quick and so on characteristics, quick opening pressure vessel is widely used in chemical industry, building material, food, textile, medical treatment and so on industrial field. Quick opening pressure vessel generally adopts screwing buckle formula structure, and the screwing buckle formula structure guarantees that pressure vessel can realize quick opening, but also causes friction between the upper and lower two contact surfaces between manhole cover and manhole seat in the rotation process. In the prior art, the internal working condition pressure of pressure vessel is small, and the degree of wear is controllable. When the pressure of pressure vessel is large in use, the gap between manhole cover and manhole seat is small, and the manhole cover is frequently opened, such as 15 minutes opening once, the friction between manhole cover and manhole seat is serious, the manhole seat is excessively worn, and the equipment is scrapped. When the gap between the two is too large, due to the internal pressure of pressure vessel, the upper contact surface of manhole cover close to the contact of manhole seat, the gap of lower contact surface is large, and the sealing ring adopts high pressure gas seal, which is easy to cause the sealing ring to escape and fail, and brings great danger and cost waste to the production process.

[0003] In addition, the manhole cover is frequently opened and has large mass, the position of manhole cover is deviated, and the wear with manhole seat is further intensified. UTILITY MODEL CONTENTS

[0004] For the problems existing in the prior art, the pressure vessel rotary quick opening device provided by the utility model can slow down the wear of the quick opening device and facilitate replacement and maintenance after excessive wear.

[0005] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme: a pressure vessel rotary quick opening device, comprising a rotating mechanism and a lifting mechanism, characterized by further comprising a manhole cover, a manhole seat, a sealing structure and a wear-resistant structure.

[0006] The rotating mechanism is arranged above the manhole cover and is used to drive the manhole cover to rotate around the axis of the manhole seat.

[0007] The lifting mechanism is arranged above the manhole cover and is used to drive the manhole cover to move away from or close to the manhole seat.

[0008] The sealing structure is arranged in the manhole seat and is used to seal the lower contact surface between the manhole seat and the manhole cover.

[0009] The wear-resistant structure is arranged on the upper contact surface between the manhole cover and the manhole seat.

[0010] Preferably, a plurality of fixed flanges are uniformly arranged on the outer circumferential surface of the manhole cover, and the wear-resistant structure is arranged on the fixed flange.

[0011] Preferably, the manhole seat is provided with a plurality of fixed flange grooves matched with the fixed flanges, and the fixed flange grooves provide space for the lifting mechanism to drive the manhole cover to slide in the manhole seat.

[0012] Preferably, the manhole seat is provided with an annular groove, and the annular groove provides space for the fixed flange to rotate during the rotation of the rotating mechanism to drive the manhole cover to rotate around the axis of the manhole seat.

[0013] Preferably, the sealing structure comprises an air channel, a mounting groove, and a sealing ring, the air channel is in communication with the mounting groove, and the sealing ring is arranged in the mounting groove and slides up and down along the mounting groove.

[0014] Preferably, the lower contact surface between the manhole cover and the manhole seat is a plane.

[0015] Preferably, the upper contact surface between the manhole cover and the manhole seat is an inclined surface, and the inclined direction of the inclined surface is along the radial direction or the tangent direction of the manhole cover.

[0016] Preferably, the upper contact surface between the manhole cover and the manhole seat is a plane.

[0017] Preferably, the wear-resistant structure is one of a wear-resistant pin, a wear-resistant strip, or a wear-resistant plate, or a combination thereof.

[0018] The above technical scheme is adopted in the utility model, and compared with the prior art, the utility model has the following advantages:

[0019] 1. The manhole cover and the manhole seat are provided with a wear-resistant structure, which can solve the problem of excessive gap between the manhole cover and the manhole seat of the high-pressure pressure vessel quick-opening device under the condition of frequent opening, and reduce wear and facilitate replacement after excessive wear.

[0020] 2. The wear problem of the high-pressure pressure vessel is first proposed in the scheme, mainly the wear of the upper contact surface, and the problem of accelerated wear and sealing failure of the manhole cover due to the deformation of the rotating structure and the lifting mechanism during use is solved. DRAWINGS

[0021] The drawings incorporated into the specification and forming part of the specification, show embodiments consistent with the present disclosure, and together with the specification, serve to explain the principles of the present disclosure.

[0022] In order to more clearly illustrate the technical scheme in the embodiments of the present disclosure or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below, and obviously, other drawings can also be obtained by those skilled in the art without creative labor.

[0023] Figure 1 The utility model quick-opening device structure schematic diagram;

[0024] Figure 2 Manhole cover shaft view of the embodiment 1 of the utility model;

[0025] Figure 3 Manhole seat shaft view of the embodiment 1 of the utility model;

[0026] Figure 4 Manhole seat and manhole cover cooperation schematic view of the embodiment 2 of the utility model;

[0027] Figure 5 Manhole seat and manhole cover cooperation schematic view of the embodiment 3 of the utility model;

[0028] Figure 6 Manhole seat and manhole cover cooperation schematic view of the embodiment 4 of the utility model;

[0029] Figure 7 Manhole cover plan view of the embodiment 3 of the utility model;

[0030] Figure 8 No wear-resistant structure sectional view of the utility model;

[0031] 1, lifting mechanism; 2, rotating mechanism;

[0032] 3, manhole cover; 3-1, fixed flange; 3-2, upper contact surface; 3-3, lower contact surface;

[0033] 4, manhole seat; 4-1, fixed flange groove; 4-2, annular groove; 4-3, air channel; 4-4, installation groove; 4-5, buckle;

[0034] 6, wear-resistant structure. DETAILED DESCRIPTION

[0035] In order to make the skilled in the art better understand the technical scheme of the utility model, the utility model is further explained in detail below in combination with the drawings and specific embodiments.

[0036] In the description of the embodiment of the utility model, it should be explained that, unless there is explicit provision and limitation, the terms "installation", "connection", "connection" should be understood in a broad sense, for example, "connection" can be detachable connection, can also be undetachable connection; can be direct connection, also can be indirect connection through intermediate medium.

[0037] The orientation terms mentioned in the embodiments of the utility model, for example, "inner", "outer", "upper", "lower", "left", "right", "top", "bottom" and the like, are only the directions of the drawings, therefore, the orientation terms used are for better and clearer illustration and understanding of the embodiments of the utility model, and are not indicative or suggestive of the devices or elements referred to necessarily having a specific orientation, being constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the utility model.

[0038] Embodiment 1

[0039] As shown in Figure 1 , Figure 3 , Figure 8 , a rotating quick opening device of a pressure vessel, comprising a rotating mechanism 2, a lifting mechanism 1, a manhole cover 3, a manhole seat 4, a sealing structure and a wear-resistant structure 6; the rotating mechanism 2 is arranged above the manhole cover 3 and is used to drive the manhole cover 3 to rotate around the axis of the manhole seat 4; wherein the rotating mechanism 2 can use a hydraulic cylinder, one end of which is arranged on the lifting mechanism 1 and the other end of which is arranged on the manhole cover 3, and the rotation of the manhole cover 3 around the axis of the manhole seat 4 is realized through the extension and retraction of the hydraulic cylinder.

[0040] Similarly, the rotating mechanism 2 can be arranged at the center position of the manhole cover 3, and the rotation is realized by driving the manhole cover 3 to rotate.

[0041] One end of the lifting mechanism 1 is hingedly arranged on the manhole cover 3, and the other end is hingedly arranged on the manhole seat 4, and is used to drive the manhole cover 3 away from or close to the manhole seat 4.

[0042] The manhole seat 4 is provided with a plurality of fixed flange grooves 4-1 matched with fixed flanges 3-1, and the fixed flange grooves 4-1 provide space for the lifting mechanism 1 to drive the manhole cover 3 to slide in the manhole seat 4. The fixed flange 3-1 can be trapezoidal, square, triangular or other shapes, and there is a certain gap between the fixed flange groove 4-1 and the fixed flange 3-1, and the gap is between 0.5mm-2mm, preferably the trapezoidal design of the fixed flange 3-1 has a guiding function, which is conducive to the entry and exit of the manhole cover 3 into the manhole seat 4.

[0043] The manhole seat 4 is provided with an annular groove 4-2, and the annular groove 4-2 provides space for the fixed flange 3-1 to rotate during the rotation of the manhole cover 3 in the manhole seat 4 driven by the rotating mechanism 2. When the fixed flange 3-1 enters the annular groove 4-2 through the fixed flange groove 4-1, the rotating mechanism 2 drives the manhole cover 3 to rotate, the fixed flange 3-1 rotates in the annular groove 4-2, and when the fixed flange 3-1 rotates by a certain angle, the fixed flange 3-1 is matched with the buckles 4-5 between the two fixed flange grooves 4-1, and a stable contact surface is formed between them, that is, through the cooperation of the upper contact surface 3-2 and the lower contact surface 3-3, the pressure of the pressure vessel working chamber is borne.

[0044] AsFigure 2 As shown, the contact surface 3-2 between the manhole seat 4 and the manhole cover 3 is an inclined surface, with the inclined surface tilting in the radial direction of the manhole cover 3. This inclined surface ensures that when the fixed flange 3-1 and the latch 4-5 rotate and rub against each other, the friction time between them is short. Even if the manhole cover 3 deforms, the area of ​​friction is relatively small, thus reducing wear. Furthermore, the wear-resistant structure 6 on the manhole cover 3 further reduces wear.

[0045] As attached Figure 7 As shown, the sealing structure is installed inside the manhole seat 4 to seal the contact surface 3-3 between the manhole seat 4 and the lower contact surface 3-3 of the manhole cover 3;

[0046] The sealing structure includes an air passage 4-3, a mounting groove 4-4, and a sealing ring. The air passage 4-3 is connected to the mounting groove 4-4, and the sealing ring is set inside the mounting groove 4-4 and slides up and down along the groove. High-pressure gas is introduced into the air passage 4-3, which pushes the sealing ring against the manhole cover 3 to achieve a seal. When it is necessary to open the manhole, the high-pressure gas in the air passage 4-3 is released, and the sealing ring falls back into the mounting groove 4-4. The rotation of the manhole cover 3 will not cause wear to the sealing ring, greatly improving its service life.

[0047] Example 2:

[0048] like Figure 4 As shown, the contact surface 3-2 between the manhole seat 4 and the manhole cover 3 is a plane, and the other structures are the same as in Embodiment 1. The wear-resistant structure 6 is a wear-resistant pin, which is fixedly connected to the fixed flange 3-1 by threads. Multiple wear-resistant pins can be set, arranged along the circumferential direction of the manhole cover 3, or arranged linearly or irregularly. When the wear becomes severe, the wear-resistant pins can be disassembled and replaced.

[0049] Example 3:

[0050] like Figure 5 , Figure 7 As shown, wear-resistant structure 6 is a wear-resistant strip. The wear-resistant strip is fixed to the fixed flange 3-1 by welding, gluing, or bolting. The cross-section of the wear-resistant strip can be trapezoidal or square, reducing wear by decreasing the contact area. The wear-resistant strip can be arranged along the circumferential or radial direction of the manhole cover 3. When the wear-resistant strip is severely worn, it can be disassembled and replaced.

[0051] Example 4:

[0052] like Figure 6 As shown, the wear-resistant structure 6 is a single piece of wear-resistant plate, which is fixed to the fixed flange 3-1 by screws. When the wear-resistant plate is severely worn, it can be disassembled and replaced.

[0053] The wear-resistant structure 6 can be arranged on the planar upper contact surface 3-2 or the inclined inclined surface-shaped upper contact surface 3-2; the wear-resistant structure 6 in the above scheme can be used in combination according to actual conditions.

[0054] The above is merely specific embodiments of the present disclosure, enabling those skilled in the art to understand or implement the present disclosure. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure will not be limited to these embodiments herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A rotary quick opening device for a pressure vessel comprising a rotary mechanism, a lifting mechanism, characterized in that, The manhole cover, the manhole seat, the sealing structure and the wear-resistant structure are also included. The rotating mechanism is arranged above the manhole cover to drive the manhole cover to rotate around the axis of the manhole seat. The lifting mechanism is arranged above the manhole cover to drive the manhole cover to move away from or close to the manhole seat. The sealing structure is arranged in the manhole seat to seal the lower contact surface of the manhole seat and the manhole cover. The wear-resistant structure is arranged on the upper contact surface of the manhole cover and the manhole seat.

2. A pressure vessel rotary quick opening device as claimed in claim 1, wherein, The manhole cover is uniformly provided with a plurality of fixed flanges on the outer circumferential surface, and the wear-resistant structure is arranged on the fixed flanges.

3. A pressure vessel rotary quick opening device as claimed in claim 2, wherein, The manhole seat is provided with a plurality of fixed flange grooves matched with the fixed flanges, and the fixed flange grooves provide space for the lifting mechanism to drive the manhole cover to slide in the manhole seat.

4. A pressure vessel rotary quick opening device as claimed in claim 3, wherein, The manhole seat is provided with an annular groove, and the annular groove provides space for the fixed flanges to rotate during the rotation of the manhole cover around the axis of the manhole seat.

5. A pressure vessel rotary quick opening device as claimed in claim 4, wherein, The sealing structure includes an air channel, a mounting groove and a sealing ring, the air channel is communicated with the mounting groove, and the sealing ring is arranged in the mounting groove and slides up and down along the mounting groove.

6. A pressure vessel rotary quick opening device as claimed in claim 1, wherein, The lower contact surface of the manhole cover and the manhole seat is a plane.

7. A pressure vessel rotary quick opening device as claimed in claim 1, wherein, The upper contact surface of the manhole seat and the manhole cover is an inclined slope, and the inclined direction of the inclined slope is along the radial direction or the tangent direction of the manhole cover.

8. A pressure vessel rotary quick opening device as claimed in claim 1, wherein, The upper contact surface of the manhole seat and the manhole cover is a plane.

9. A pressure vessel rotary quick opening device as claimed in claim 7 or 8, characterised in that, The wear-resistant structure is arranged as one of wear-resistant pin, wear-resistant strip or wear-resistant plate or a combination thereof.

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