Liquefied petroleum gas manhole shell ring

Abstract

The utility model discloses a liquefied petroleum gas manhole shell ring which comprises a manhole shell ring body movably embedded in a storage tank shell body, a manhole is fixedly welded to the top of the manhole shell ring body, an annular installation plate is integrally fixed to the top of the storage tank shell body in advance, and the annular installation plate is movably arranged on the manhole shell ring body in a sleeved mode. The manhole shell ring body is fixedly sleeved with a fixing plate, and the fixing plate is fixed to the top of the annular mounting plate in a threaded mode. Through the arrangement of a series of structures, stable sealing and fixing between the manhole shell ring body and the storage tank shell body can be achieved in a threaded fixing mode, fixing efficiency is improved, welding operation of professional welding personnel is not needed, common personnel can directly complete installation, personnel operation is convenient, and the labor intensity of workers is reduced. And in addition, personnel can be reminded to adjust in time when it is detected that the sealing performance is reduced, the connection sealing effect is improved, and the risk of petroleum gas leakage caused by long-time use can be effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of manhole cylinders, in particular to a liquefied petroleum gas manhole cylinder. Background Art

[0002] With the improvement of economic and material levels, people's demand for energy is increasing. Due to the high demand for liquid energy such as oil, people have to improve the ability to store and transport energy. Therefore, pressure vessels are manufactured. Manholes are usually provided on pressure vessels to facilitate personnel to enter for maintenance and cleaning. Existing manholes generally have two parts, a manhole cylinder and a manhole. The manhole cylinder is welded to the storage tank cylinder, and the manhole is welded to the manhole cylinder;

[0003] In the prior art, the manhole cylinder is fixed to the storage tank cylinder by welding. For long-term use, its sealing connection effect is not ideal. After long-term use, cracks are likely to occur at the welding point, thus causing the risk of liquefied petroleum gas leakage; in addition, the welding fixation method has low fixation efficiency and requires professional welders for welding. Ordinary workers cannot operate in time and cannot meet the use requirements. Considering the above situation, we have proposed a liquefied petroleum gas manhole cylinder. Content of the Utility Model

[0004] The purpose of the utility model is to solve the defects existing in the prior art, and to propose a liquefied petroleum gas manhole cylinder.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A liquefied petroleum gas manhole cylinder section includes a manhole cylinder section body movably embedded on a storage tank cylinder body. A manhole is fixedly welded to the top of the manhole cylinder section body. An annular mounting plate is integrally pre-fixed to the top of the storage tank cylinder body. The annular mounting plate is movably sleeved on the manhole cylinder section body. A fixing plate is fixedly sleeved on the manhole cylinder section body. The fixing plate is threadedly fixed to the top of the annular mounting plate. The fixed connection between the manhole cylinder section body and the storage tank cylinder body is realized through the fixing plate and the annular mounting plate. An annular groove with an open bottom is formed on the outer side of the manhole cylinder section body. An elastic sealing ring is movably sleeved in the annular groove. A fitting hole is formed on the top of the storage tank cylinder body. The inner wall of the fitting hole is in close contact with the outer side of the elastic sealing ring. An outer edge is integrally provided at the top of the outer side of the elastic sealing ring. The outer side of the outer edge is in close contact with the inner wall of the annular mounting plate. The sealed connection between the manhole cylinder section body and the storage tank cylinder body is realized through the elastic sealing ring. An annular pressing plate movably sleeved in the annular groove is in close contact with the top of the outer edge. A threaded driving mechanism threadedly sleeved on the manhole cylinder section body is fixedly connected to the top of the annular pressing plate. The top of the threaded driving mechanism extends above the fixing plate. The threaded driving mechanism is used to drive the annular pressing plate to move vertically. A pressure detection and reminder mechanism is fixedly connected between the left inner wall of the annular pressing plate and the left side of the fixing plate. The pressure detection and reminder mechanism is used to timely remind personnel when the pressure value is lower than or reaches a preset value.

[0007] Preferably, the threaded driving mechanism includes four guide rods fixedly connected to the top of the annular pressing plate at equal intervals in a ring shape. The top ends of the four guide rods all extend above the fixing plate and are fixedly connected to the same moving ring. The four guide rods play a role in vertically guiding the annular pressing plate and the moving ring. The moving ring is sleeved on the manhole cylinder section body. The fixing plate is slidably sleeved on the four guide rods. An internal thread ring is threadedly sleeved on the manhole cylinder section body. The internal thread ring is threadedly connected to the manhole cylinder section body in such a way that it can move in position while rotating. The moving ring is rotatably mounted at the bottom of the internal thread ring. Four handle rods are fixedly connected to the outer side of the internal thread ring in a ring shape. The internal thread ring is rotated through the handle rods.

[0008] Preferably, the pressure detection and reminder mechanism includes a pressure sensor. The pressure sensor is fixedly connected to the left inner wall of the annular pressing plate. The bottom of the pressure sensor is a detection end and is in close contact with the top of the elastic sealing ring. The pressure sensor is used to detect the extrusion reaction force of the elastic sealing ring. A storage battery and a controller are fixedly installed on the left side of the fixing plate. An alarm lamp is fixedly connected to the left side of the controller. The alarm lamp is used to remind personnel. The controller is electrically connected to the alarm lamp and the pressure sensor. The pressure sensor, the controller and the alarm lamp are all electrically connected to the storage battery.

[0009] Preferably, four threaded grooves are annularly formed at the top of the annular mounting plate. T-shaped fixing bolts are threadedly sleeved in the threaded grooves, and the fixing plate is threadedly sleeved on the four T-shaped fixing bolts. The fixing between the annular mounting plate and the fixing plate is realized through the four T-shaped fixing bolts.

[0010] Preferably, external threads are formed on the outer side of the manhole cylinder body. The internal thread ring is threadedly connected to the external threads. An annular groove is formed at the bottom of the internal thread ring. A large bearing is fixedly sleeved in the annular groove. The inner side of the inner ring of the large bearing is fixedly connected to the outer side of the moving ring. The large bearing serves to rotatably mount the internal thread ring.

[0011] Preferably, a fixing hole is formed at the top of the fixing plate. The inner wall of the fixing hole is fixedly connected to the outer side of the manhole cylinder body. Four guiding holes are annularly formed at the top of the fixing plate. The inner walls of the guiding holes are slidably sleeved on the outer sides of the corresponding guiding rods.

[0012] Preferably, the inner side of the elastic sealing ring is in close contact with the side wall of the annular groove. The inner wall of the annular pressing plate is not in contact with the outer side of the manhole cylinder body.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] 1. Through the cooperation of the annular mounting plate, the fixing plate, the T-shaped fixing bolts and the elastic sealing ring, the sealed and fixed connection between the manhole cylinder body and the storage tank cylinder can be realized by means of threaded fixing, which is convenient for personnel operation, improves the fixing efficiency, and does not require professional welders for welding operations. Ordinary personnel can directly complete the installation.

[0015] 2. Through the setting of the threaded driving mechanism, the elastic sealing ring can be compressed and adjusted, so as to adjust the sealing performance and improve the sealing stability during fixing.

[0016] 3. Through the setting of the pressure detection and reminder mechanism, when it is detected that the inner and outer sides of the elastic sealing ring cannot be effectively attached to the inner wall of the embedding hole and the inner wall of the annular groove, and the sealing performance is reduced, the personnel can be reminded in time to make adjustments, so as to improve the connection sealing effect and effectively reduce the risk of liquefied petroleum gas leakage during long-term use.

[0017] Through the setting of a series of structures, the present utility model can realize the stable sealed fixation between the manhole cylinder body and the storage tank cylinder by means of threaded fixation, improve the fixation efficiency, and does not require professional welders for welding operations. Ordinary personnel can directly complete the installation, which is convenient for personnel operation. In addition, it can remind the personnel to make adjustments in time when the sealing performance is reduced, improve the connection sealing effect, and effectively reduce the risk of liquefied petroleum gas leakage during long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The structural schematic diagram of a manhole cylinder section for liquefied petroleum gas proposed by the present utility model;

[0019] Figure 2 is Figure 1 the sectional structural schematic diagram of;

[0020] Figure 3 is Figure 2 the enlarged structural schematic diagram of part A in;

[0021] In the figure: 100, storage tank cylinder; 101, manhole cylinder section body; 102, manhole; 1, annular groove; 2, elastic sealing ring; 3, annular mounting plate; 4, fixing plate; 5, annular pressing plate; 6, pressure sensor; 7, guide rod; 8, internal thread ring; 9, moving ring; 10, controller; 11, alarm lamp; 12, T-shaped fixing bolt; 13, large bearing; 14, handle rod; 15, storage battery; 16, annular groove. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0023] Refer to Figures 1-3, a liquefied petroleum gas manhole cylinder section, including a manhole cylinder section body 101 movably fitted on a storage tank cylinder body 100. A manhole 102 is welded and fixed to the top of the manhole cylinder section body 101. A ring-shaped mounting plate 3 is integrally pre-fixed to the top of the storage tank cylinder body 100. The ring-shaped mounting plate 3 is integrally fixed to the top of the storage tank cylinder body 100 in advance, and there is no need to separately install and fix the ring-shaped mounting plate 3 when installing the manhole cylinder section body 101 subsequently. The ring-shaped mounting plate 3 is movably sleeved on the manhole cylinder section body 101. A fixing plate 4 is fixedly sleeved on the manhole cylinder section body 101. A fixing hole is opened at the top of the fixing plate 4, and the inner wall of the fixing hole is fixedly connected to the outer side of the manhole cylinder section body 101. The fixing plate 4 is threadedly fixed to the top of the ring-shaped mounting plate 3. Four threaded grooves are annularly opened at the top of the ring-shaped mounting plate 3. A T-shaped fixing bolt 12 is threadedly sleeved in the threaded groove. The fixing plate 4 is threadedly sleeved on the four T-shaped fixing bolts 12. Four bolt holes are opened at the top of the fixing plate 4, and the bolt holes are threadedly connected to the corresponding T-shaped fixing bolts 12. The fixing between the ring-shaped mounting plate 3 and the fixing plate 4 is realized through the four T-shaped fixing bolts 12. The fixed connection between the manhole cylinder section body 101 and the storage tank cylinder body 100 is realized through the fixing plate 4 and the ring-shaped mounting plate 3. An annular groove 1 with an open bottom is opened on the outer side of the manhole cylinder section body 101. An elastic sealing ring 2 is movably sleeved in the annular groove 1. The inner side of the elastic sealing ring 2 is in close contact with the side wall of the annular groove 1. An embedding hole is opened at the top of the storage tank cylinder body 100, and the inner wall of the embedding hole is in close contact with the outer side of the elastic sealing ring 2. An outer edge is integrally provided at the top of the outer side of the elastic sealing ring 2, and the outer side of the outer edge is in close contact with the inner wall of the ring-shaped mounting plate 3. The sealed connection between the manhole cylinder section body 101 and the storage tank cylinder body 100 is realized through the elastic sealing ring 2. An annular pressing plate 5 movably sleeved in the annular groove 1 is in close contact with the top of the outer edge. The inner wall of the annular pressing plate 5 is not in contact with the outer side of the manhole cylinder section body 101;

[0024] The top of the annular pressing plate 5 is fixedly connected with a threaded driving mechanism with a thread sleeved on the manhole barrel section body 101. The top of the threaded driving mechanism extends above the fixed plate 4. The threaded driving mechanism includes four guide rods 7 fixedly connected to the top of the annular pressing plate 5 at equal intervals in a ring shape. The top ends of the four guide rods 7 all extend above the fixed plate 4 and are fixedly connected to the same moving ring 9. The four guide rods 7 play a role in vertically guiding the annular pressing plate 5 and the moving ring 9. The moving ring 9 is sleeved on the manhole barrel section body 101. The fixed plate 4 is slidably sleeved on the four guide rods 7. The top of the fixed plate 4 is provided with four guide holes in a ring shape. The inner wall of the guide hole is slidably sleeved with the outer side of the corresponding guide rod 7. An internal thread ring 8 is threadedly sleeved on the manhole barrel section body 101. The outer side of the manhole barrel section body 101 is provided with an external thread. The internal thread ring 8 is threadedly connected with the external thread. The internal thread ring 8 and the manhole barrel section body 101 can move in position while the internal thread ring 8 rotates. The moving ring 9 is rotatably installed at the bottom of the internal thread ring 8. An annular groove 16 is formed at the bottom of the internal thread ring 8. A large bearing 13 is fixedly sleeved in the annular groove 16. The inner side of the inner ring of the large bearing 13 is fixedly connected with the outer side of the moving ring 9. The large bearing 13 plays a role in rotatably installing the internal thread ring 8. Four handle rods 14 are fixedly connected to the outer side of the internal thread ring 8 in a ring shape. The internal thread ring 8 is rotated through the handle rods 14;

[0025] A pressure detection and reminder mechanism is fixedly connected between the left inner wall of the annular pressing plate 5 and the left side of the fixed plate 4. The pressure detection and reminder mechanism includes a pressure sensor 6. The pressure sensor 6 is fixedly connected to the left inner wall of the annular pressing plate 5. The bottom of the pressure sensor 6 is the detection end and is in close contact with the top of the elastic sealing ring 2. The pressure sensor 6 is used to detect the extrusion reaction force of the elastic sealing ring 2. A storage battery 15 and a controller 10 are fixedly installed on the left side of the fixed plate 4. An alarm lamp 11 is fixedly connected to the left side of the controller 10. The alarm lamp 11 is used to remind personnel. The controller 10 is electrically connected to the alarm lamp 11 and the pressure sensor 6. The pressure sensor 6, the controller 10 and the alarm lamp 11 are all electrically connected to the storage battery 15. The storage battery 15 supplies power to the pressure sensor 6, the controller 10 and the alarm lamp 11; Through the setting of a series of structures, the utility model can realize the stable sealing and fixing between the manhole barrel section body 101 and the storage tank barrel 100 by means of threaded fixing, improve the fixing efficiency, and does not require professional welders to perform welding operations. Ordinary personnel can directly complete the installation, which is convenient for personnel to operate. In addition, it can timely remind personnel to adjust when detecting that the sealing performance decreases, improve the connection sealing effect, and effectively reduce the risk of liquefied petroleum gas leakage during long-term use.

[0026] Working principle: When in use, when installing the manhole cylinder body 101, the pressure value at which the warning light 11 lights up is preset through the controller 10 in advance. The bottom end of the manhole cylinder body 101 is inserted into the storage tank cylinder body 100 through the embedding hole. When the fixing plate 4 on the manhole cylinder body 101 contacts the top of the annular mounting plate 3, stop moving the manhole cylinder body 101. Then, the fixing plate 4 and the manhole cylinder body 101 can be fixed by four T-shaped fixing bolts 12. After fixing, rotate the handle rod 14 in the positive direction. The handle rod 14 drives the internal thread ring 8 to rotate on the outside of the manhole cylinder body 101. While the internal thread ring 8 rotates, it drives the moving ring 9 to move downward through the large bearing 13. The moving ring 9 drives the four guide rods 7 to move downward. The four guide rods 7 drive the annular pressing plate 5 to move downward to squeeze the elastic sealing ring 2. Under the squeezing force, the elastic sealing ring 2 deforms, so that the outer side and the inner side of the elastic sealing ring 2 are in close contact with the inner wall of the embedding hole and the inner wall of the annular groove 1 respectively. While the annular pressing plate 5 moves downward, it also drives the pressure sensor 6 to move downward to squeeze the top of the elastic sealing ring 2. At the same time, the pressure sensor 6 detects the reaction force of the squeezing and transmits the detected pressure value to the controller 10. When it is detected that the squeezing force reaches the preset value, it proves that the fitting degree of the outer side and the inner side of the elastic sealing ring 2 with the inner wall of the embedding hole and the inner wall of the annular groove 1 meets the requirements. At this time, the controller 10 controls the warning light 11 to light up to remind the personnel, so as to realize the sealed connection and fixation of the manhole cylinder body 101 and the storage tank cylinder body 100. And the way of using four T-shaped fixing bolts 12 in cooperation with the elastic sealing ring 2 for sealed fixation is convenient for personnel to operate, improves the fixation efficiency, and does not require professional welding personnel to perform welding operations. Ordinary personnel can directly complete the installation. In addition, by adjusting the compression of the elastic sealing ring 2, the sealing stability during fixation is improved;

[0027] With long-term use, the elastic sealing ring 2 is prone to aging and thinning. When the elastic sealing ring 2 becomes thinner, the extrusion reaction force on the pressure sensor 6 decreases, and the inner and outer sides of the elastic sealing ring 2 cannot effectively fit with the inner wall of the embedding hole and the inner wall of the annular groove 1, resulting in a reduction in its sealing performance. When it is detected that the pressure value is lower than the preset value, the controller 10 controls the alarm lamp 11 to light up again to remind the personnel. The personnel first turn off the alarm lamp 11, and then the personnel can turn the internal thread ring 8 forward again, so that the annular pressing plate 5 moves downward again to extrude the elastic sealing ring 2, causing the elastic sealing ring 2 to deform, and its inner and outer sides to effectively fit with the inner wall of the embedding hole and the inner wall of the annular groove 1 again. The annular pressing plate 5 also drives the pressure sensor 6 to extrude the elastic sealing ring 2. When it is detected that the reaction force reaches the preset value again, the personnel are reminded again through the alarm lamp 11, and then the rotation of the internal thread ring 8 can be stopped, so as to achieve the purpose of timely reminding the personnel to make adjustments when the sealing performance decreases, improve the connection sealing effect, and effectively reduce the risk of liquefied petroleum gas leakage during long-term use.

[0028] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A liquefied petroleum gas manhole cylinder section, comprising a manhole cylinder section body (101) movably embedded in a storage tank cylinder (100), a manhole (102) being welded and fixed on the top of the manhole cylinder section body (101), characterized in that: The top of the storage tank cylinder (100) is pre-integrated with an annular mounting plate (3), which is movably sleeved on the manhole cylinder section body (101), and a fixing plate (4) is fixedly sleeved on the manhole cylinder section body (101), and the fixing plate (4) is threadedly fixed on the top of the annular mounting plate (3), and the outer side of the manhole cylinder section body (101) is provided with an annular groove (1) with an opening at the bottom, and an elastic sealing ring (2) is movably sleeved in the annular groove (1), and an embedding hole is provided on the top of the storage tank cylinder (100), and the inner wall of the embedding hole and the elastic sealing ring ( The outer side of the annular mounting plate (3) is in close contact with the outer side of the annular mounting plate (2), the outer side of the elastic sealing ring (2) is integrally provided with an outer edge, the outer side of the outer edge is in close contact with the inner wall of the annular mounting plate (3), the top of the outer edge is in close contact with an annular pressing plate (5) movably sleeved in the annular groove (1), the top of the annular pressing plate (5) is fixedly connected with a threaded driving mechanism threadedly sleeved on the manhole cylinder body (101), the top of the threaded driving mechanism extends to the top of the fixing plate (4), and a pressure detection reminder mechanism is fixedly connected between the left inner wall of the annular pressing plate (5) and the left side of the fixing plate (4).

2. A liquefied petroleum gas manhole barrel section according to claim 1, characterized in that: The threaded drive mechanism comprises four guide rods (7) fixedly connected to the top of the annular pressure plate (5) at equal intervals in an annular shape, the top ends of the four guide rods (7) all extend to the top of the fixed plate (4) and are fixedly connected to the same movable ring (9), the movable ring (9) is sleeved on the manhole barrel section body (101), the fixed plate (4) is slidably sleeved on the four guide rods (7), an internal threaded ring (8) is threadedly sleeved on the manhole barrel section body (101), the movable ring (9) is rotatably mounted on the bottom of the internal threaded ring (8), and the outer side of the internal threaded ring (8) is fixedly connected to four handle rods (14) in an annular shape.

3. A liquefied petroleum gas manhole barrel section according to claim 2, characterized in that: The pressure detection reminder mechanism comprises a pressure sensor (6), the pressure sensor (6) is fixedly connected to the left inner wall of the annular pressure plate (5), the bottom of the pressure sensor (6) is a detection end and is in close contact with the top of the elastic sealing ring (2), a battery (15) and a controller (10) are fixedly installed on the left side of the fixed plate (4), an alarm light (11) is fixedly connected to the left side of the controller (10), the controller (10) is electrically connected to the alarm light (11) and the pressure sensor (6), and the pressure sensor (6), the controller (10) and the alarm light (11) are all electrically connected to the battery (15).

4. A liquefied petroleum gas manhole barrel section according to claim 1, characterized in that: The top of the annular mounting plate (3) is provided with four thread grooves in the shape of an annular ring, T-shaped fixing bolts (12) are threadedly sleeved in the thread grooves, and the fixing plate (4) is threadedly sleeved on the four T-shaped fixing bolts (12).

5. A liquefied petroleum gas manhole barrel section according to claim 2, characterized in that: The outer side of the manhole barrel section body (101) is provided with an external thread, the internal thread ring (8) is threadedly connected to the external thread, the bottom of the internal thread ring (8) is provided with an annular groove (16), a large bearing (13) is fixedly sleeved in the annular groove (16), and the inner side of the inner ring of the large bearing (13) is fixedly connected to the outer side of the movable ring (9).

6. A liquefied petroleum gas manhole barrel section according to claim 2, characterized in that: A fixing hole is provided at the top of the fixing plate (4), the inner wall of the fixing hole is fixedly connected to the outer side of the manhole barrel section body (101), and four guide holes are provided at the top of the fixing plate (4) in an annular shape, the inner walls of the guide holes are slidably fitted to the outer sides of corresponding guide rods (7).

7. The liquefied petroleum gas manhole barrel section according to claim 1, characterized in that: The inner side of the elastic sealing ring (2) is in close contact with the side wall of the annular groove (1), and the inner wall of the annular pressure plate (5) is not in contact with the outer side of the manhole barrel section body (101).

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