Plane sealing cap for tank opening of tank car

Abstract

The utility model discloses a plane sealing cap for a tank car filling opening, which relates to the technical field of tank car accessories and comprises a sealing cap body, the sealing cap body is disc-shaped, and a through hole, a first pressing block and a second pressing block which are coaxial with the sealing cap body are arranged in the center of the sealing cap body. The first pressing block and the second pressing block are both installed on the sealing cap body, the sealing cap body is fixed to a tank opening through the first pressing block and the second pressing block, the plane sealing cap is adopted to replace a conical sealing cap, the height of the tank opening and the outer diameter size are correspondingly reduced, pressing sealing is achieved, and it is prevented that when a train crane pipe is unloaded or loaded, the sealing cap body is damaged. Oil gas escapes to pollute the atmosphere.

Description

Technical Field

[0001] This utility model relates to the field of tank truck accessories technology, and more specifically, to a flat sealing cap for the tank truck filling port. Background Technology

[0002] Tank truck filling caps are sealing devices used in industries such as petroleum and chemical processing. Their main function is to ensure that gases do not leak into the external environment when loading and unloading volatile or toxic media, preventing air pollution caused by oil and gas volatilization, while improving safety and economic efficiency.

[0003] Currently, the most commonly used sealing caps are conical or tapered. Because of the tapered sealing cap structure, the height of the upper end of the sealing cap exceeds the filling port of the train tank car by a large margin, and the diameter of the upper port of the sealing cap is too large. This makes it impossible to achieve mechanical locking between the sealing cap and the filling port from a structural perspective, resulting in the potential for poor sealing.

[0004] In conclusion, how to provide a filling cap with good sealing performance is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide a flat sealing cap for tank truck filling ports, which has better sealing performance, reduces the overall size of the sealing cap, and is applicable to filling ports of more sizes.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A flat sealing cap for a tank truck filling port, comprising:

[0008] The sealing cap body is disc-shaped, and the center of the sealing cap body has a through hole coaxial with the sealing cap body;

[0009] A first pressure block and a second pressure block are both installed on the sealing cap body, and the sealing cap body is fixed to the filling port by the first pressure block and the second pressure block.

[0010] Furthermore, the present invention provides an annular sealing ring at the contact position between the sealing cap body and the filling port.

[0011] Furthermore, in this invention, the first pressing block has a strip-shaped structure, and the second pressing block has a Z-shaped structure.

[0012] Furthermore, the number of the first pressing block and the second pressing block is at least two, and the first pressing block and the second pressing block are distributed alternately.

[0013] Furthermore, this utility model also includes:

[0014] Fixing bolts are used to fix the first pressure block and the second pressure block to the sealing cap body.

[0015] Furthermore, in this invention, both the first and second pressure blocks are provided with strip-shaped adjustment holes at their contact positions with the sealing cap body. The fixing bolt passes through the adjustment holes, and the position of the first and second pressure blocks is adjusted by the relative sliding of the fixing bolt and the adjustment holes.

[0016] Furthermore, in this invention, both the first pressure block and the second pressure block have a connecting hole at the end away from the fixing bolt, and the connecting hole is a U-shaped structure with its opening away from the direction of the adjustment hole.

[0017] Furthermore, the connecting holes are all provided with an anti-slip layer.

[0018] Furthermore, the through hole is provided with an annular groove, and a Y-shaped sealing ring is provided inside the groove.

[0019] Furthermore, the sealing cap body is provided with at least one handle.

[0020] The flat sealing cap for tank car filling ports provided by this utility model has a first pressure block and a second pressure block installed on the sealing cap body. The sealing cap body is disc-shaped, and the center of the sealing cap body has a through hole coaxial with the sealing cap body. That is to say, the sealing cap body adopts a flat disc structure. The sealing cap body is fixed to the filling port by the first pressure block and the second pressure block. In other words, with the cooperation of the first pressure block and the second pressure block, the sealing cap is fixed at the filling port position. At the same time, the through hole facilitates the insertion of the loading arm and facilitates the loading and unloading of liquid. The use of a flat sealing cap instead of a conical sealing cap reduces the height of the sealing cap from the tank car filling port, and the outer diameter of the flat sealing cap is also reduced accordingly. At the same time, the outer diameter of the sealing cap can meet the sealing requirements of the filling ports of different existing tank car models. On the other hand, it avoids the situation where the upper port diameter of the conical sealing cap is too large, which makes it impossible to achieve mechanical locking between the sealing cap and the filling port. This achieves a tight seal and prevents oil and gas from escaping and polluting the atmosphere during unloading or loading operations of the loading arm. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0022] Figure 1 This is a top view structural diagram of the present invention;

[0023] Figure 2 This is a schematic diagram of the overall structure of the present invention in use from the front.

[0024] Figure 3 Provided by this utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0025] Figures 1-3 In the accompanying drawings, the reference numerals include:

[0026] 1. Sealing cap body; 2. Loading arm hole; 3. First pressure block; 4. Second pressure block; 5. Fixing bolt; 6. Adjustment hole; 7. Connection hole; 8. Groove; 9. Y-type sealing ring; 10. Handle. Detailed Implementation

[0027] 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.

[0028] The core of this utility model is to provide a flat sealing cap for tank truck filling ports, which has better sealing performance and reduces the overall size of the sealing cap while being suitable for filling ports of more sizes.

[0029] Please refer to Figure 2 A flat sealing cap for a tank truck filling port includes a sealing cap body 1, a first pressure block 3, and a second pressure block 4. The sealing cap body 1 is disc-shaped, and a through hole 2 coaxial with the sealing cap body 1 is provided in the center of the sealing cap body 1. The first pressure block 3 and the second pressure block 4 are both installed on the sealing cap body 1, and the sealing cap body 1 is fixed to the filling port through the first pressure block 3 and the second pressure block 4.

[0030] It should be noted that the through hole in this embodiment refers to the loading arm hole for insertion of the loading arm. The loading arm is a specialized device used in the petrochemical industry for fluid loading and unloading, also known as a fluid loading / unloading arm. It connects to rigid pipes and elbows via rotary joints, enabling the transfer of liquid media between trains, tank cars, and storage and transportation pipelines on trestles. The use of loading arms replaces the old-fashioned hose connections, offering advantages such as high safety, flexibility, and a longer service life. Therefore, the sealing cap body of this device is used in conjunction with the loading arm during loading and unloading.

[0031] It should be noted that the present invention does not specifically limit the connection method between the first pressure block 3 and the second pressure block 4 and the sealing cap body 1. In some embodiments, the first pressure block 3 and the second pressure block 4 can be fixed to the sealing cap body 1 by welding or riveting, or by bolts.

[0032] In some embodiments, the first pressure block 3 and the second pressure block 4 fix the sealing cap body 1 to the position of the filling port by means of bolts. Specifically, a sealing cap is provided at the position of the tank car filling port to close the tank car filling port. The sealing cap is fixed by bolts to lock it to the tank car filling port. Therefore, the bolts at the position of the tank car filling port can be connected with the first pressure block 3 and the second pressure block 4 to lock the sealing cap body 1 to the position of the tank car filling port.

[0033] Optionally, in order to facilitate the handling of the device, in some embodiments, the sealing cap body 1 is provided with at least one handle 10, which allows the user to easily handle the device.

[0034] In use, the first pressure block 3 and the second pressure block 4 are installed on the sealing cap body 1. The sealing cap body 1 is disc-shaped, and the center of the sealing cap body 1 has a loading arm hole 2 coaxial with the sealing cap body 1. That is to say, the sealing cap body 1 adopts a flat disc-shaped structure. The sealing cap body 1 is fixed to the filling port through the first pressure block 3 and the second pressure block 4. In other words, with the cooperation of the first pressure block 3 and the second pressure block 4, the sealing cap is fixed at the filling port position. At the same time, the loading arm hole 2 facilitates the insertion of the loading arm and facilitates the loading and unloading of liquid. The use of a flat sealing cap instead of a conical sealing cap reduces the height of the sealing cap from the tank car filling port, and the outer diameter of the flat sealing cap is also reduced accordingly. At the same time, the outer diameter of the sealing cap can meet the sealing requirements of the filling ports of different existing tank car models. On the other hand, it avoids the situation where the upper port diameter of the conical sealing cap is too large, which makes it impossible to achieve mechanical locking between the sealing cap and the filling port from a structural perspective. This achieves a tight seal and prevents oil and gas from escaping and polluting the atmosphere during unloading or loading operations of the train loading arm.

[0035] Please refer to Figure 1 In order to improve the sealing performance of the sealing cap body 1 to the filling port, in some embodiments, an annular sealing ring is provided at the contact position between the sealing cap body 1 and the filling port. By adding a sealing ring or sealing gasket, it is beneficial to increase the sealing performance at the connection.

[0036] Alternatively, the sealing ring can be made of rubber or silicone.

[0037] Optionally, to facilitate the replacement of the sealing ring, in some embodiments, an annular groove 8 can be provided on the sealing cap body 1. By inserting the sealing ring into the groove 8, the sealing ring can be fixed and can be replaced quickly.

[0038] In other embodiments, the sealing ring may be glued to the sealing cap body 1.

[0039] Please refer to Figure 1 In some embodiments, the first pressure block 3 is a strip structure, and the second pressure block 4 is a Z-shaped structure. Specifically, the first pressure block 3 adopts a planar strip structure, so when it is fixed to the upper end face of the sealing cap body 1, it maintains the same horizontal position as it. The second pressure block 4 adopts a Z-shaped structure, specifically, the second pressure block 4 is divided into three sections. The first section is parallel to the upper end face of the sealing cap body 1, the second section forms an acute angle with the upper end face of the sealing cap body 1, and the third section forms an obtuse angle with the second section. By adopting two different pressure block structures, when the sealing cap is locked by the bolt at the filling port, the first pressure block 3 provides a vertically downward pressing force to the sealing cap, and the second pressure block 4 provides a radial locking pre-tightening force to the sealing cap while providing a downward pressing force, which is beneficial to further enhance the sealing performance between the sealing cap body 1 and the filling port.

[0040] Optionally, in some embodiments, the second pressure block 4 is made of spring steel, utilizing the elasticity of the spring steel itself to increase the preload.

[0041] Optionally, based on the above-mentioned second pressure block 4 structure, the bolts at the tank truck filling port are installed at the filling port by rotating one end, which satisfies the pressure block fixing method at any angle.

[0042] Optionally, in some embodiments, the first pressure block 3 and the second pressure block 4 can each be used in single quantities, which can also complete the sealing of the sealing cap body 1.

[0043] In other embodiments, the number of first pressure blocks 3 and second pressure blocks 4 is at least two, and the first pressure blocks 3 and second pressure blocks 4 are alternately distributed. By increasing the number of first pressure blocks 3 and second pressure blocks 4 and adopting an alternating distribution, it is beneficial to further enhance the sealing effect on the sealing cap body 1.

[0044] Please refer to Figure 1To adapt the sealing cap body 1 to different sized filling ports, in some embodiments, the first pressure block 3 and the second pressure block 4 are provided with strip-shaped adjustment holes 6 at their contact positions with the sealing cap body 1. The fixing bolt 5 passes through the adjustment holes 6 and slides relative to the adjustment holes 6 to adjust the position of the first pressure block 3 and the second pressure block 4. Specifically, the first pressure block 3 and the second pressure block 4 are provided with strip-shaped adjustment holes 6 at their contact positions with the sealing cap body 1. When used for filling ports of different sizes, the distance between the first pressure block 3 and the second pressure block 4 and the sealing cap body 1 can be adjusted by sliding the adjustment holes 6 to meet the needs of filling ports of different sizes, which is convenient and quick and improves the versatility of the device. During use, the position of the first pressure block 3 and the second pressure block 4 is fixed by tightening or loosening the fixing bolt 5.

[0045] Optionally, in order to improve the fixing stability of the pressure blocks, in some embodiments, an anti-slip layer or anti-slip texture is provided at the contact position between the first pressure block 3 and the second pressure block 4 and the fixing bolt 5. Specifically, the anti-slip layer can be made of rubber or silicone, and the anti-slip texture can be a mesh pattern, thereby increasing the fixing stability of the first pressure block 3 and the second pressure block 4 by the fixing bolt 5.

[0046] In other embodiments, the stability of fixing the first pressure block 3 and the second pressure block 4 can be improved by fitting anti-slip rubber rings onto the fixing bolts 5.

[0047] Please refer to Figure 1 To facilitate quick fixing of the first pressure block 3 and the second pressure block 4, in some embodiments, the ends of the first pressure block 3 and the second pressure block 4 away from the fixing bolt 5 are provided with connecting holes 7. The connecting holes 7 are U-shaped structures with the openings away from the adjustment holes 6. Specifically, connecting holes 7 with openings are provided on the first pressure block 3 and the second pressure block 4. When the injection port uses a bolt whose inclination angle is changed by rotation, the bolt can be quickly inserted into the connecting hole 7, avoiding the need to remove the nut from the bolt and improving the fixing efficiency.

[0048] Optionally, in order to further improve the stability of the connection between the injection port bolt and the connecting hole 7, in some embodiments, anti-disengagement hooks facing each other can be provided at the opening position of the connecting hole 7. When the bolt is inserted into the connecting hole 7, the anti-disengagement hooks deform on their own to complete the process. After the bolt enters the connecting hole 7, the anti-disengagement hooks can play the role of preventing the bolt from disengaging.

[0049] Optionally, in order to further improve the stability of the connection between the injection bolt and the connecting hole 7, in some embodiments, an L-shaped anti-disengagement hook is rotatably installed at the connecting hole 7 position of the first pressure block 3 and the second pressure block 4. The rotation axis of the anti-disengagement hook is perpendicular to the axis of the fixing bolt 5. Therefore, before the bolt is inserted into the connecting hole 7, the anti-disengagement hook is rotated to the outside of the connecting hole 7, and after the bolt is inserted into the connecting hole 7, the anti-disengagement hook is rotated to the position opposite to the connecting hole 7, thereby improving the purpose of fixing the bolt position.

[0050] Optionally, in order to further improve the stability of the connection between the injection bolt and the connecting hole 7, in some embodiments, an anti-slip layer is provided at the connecting hole 7. The anti-slip layer can be made of rubber or silicone to improve the firmness of the bolt after it comes into contact with the first pressure block 3 and the second pressure block 4.

[0051] Optionally, in order to improve the sealing performance of the loading arm after it is inserted into the loading arm hole 2, in some embodiments, an annular groove 8 is provided at the loading arm hole 2, and a Y-shaped sealing ring 9 is provided inside the groove 8. That is, the loading arm is sealed by using the Y-shaped sealing ring 9, and even if the loading arm slides to a certain extent in the loading arm hole 2, an effective sealing effect can be ensured.

[0052] Optionally, a vent hole is provided on the sealing cap body 1, and a vent valve is provided at the vent hole for stabilizing the pressure inside the tank.

[0053] In other words, the key point of this utility model is that the first pressure block 3 and the second pressure block 4 are installed on the sealing cap body 1. The sealing cap body 1 is disc-shaped, and the center of the sealing cap body 1 is provided with a loading arm hole 2 coaxial with the sealing cap body 1. That is to say, the sealing cap body 1 adopts a planar disc-shaped structure. The sealing cap body 1 is fixed to the filling port through the first pressure block 3 and the second pressure block 4. In other words, with the cooperation of the first pressure block 3 and the second pressure block 4, the sealing cap is fixed at the filling port position. At the same time, the loading arm hole 2 facilitates the insertion of the loading arm and facilitates the loading and unloading of liquid. The use of a planar sealing cap instead of a conical sealing cap reduces the height of the sealing cap from the tank car filling port, and the outer diameter of the planar sealing cap is also reduced accordingly. At the same time, the outer diameter of the sealing cap can meet the sealing requirements of the filling ports of different existing tank car models. On the other hand, it avoids the situation where the upper port diameter of the conical sealing cap is too large, which makes it impossible to achieve mechanical locking between the sealing cap and the filling port from a structural perspective. This achieves a tight seal and prevents oil and gas from escaping and polluting the atmosphere during unloading or loading operations of the train loading arm.

[0054] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0055] The above provides a detailed description of a flat sealing cap for a tank truck filling port provided by this utility model. Specific examples have been used to illustrate the principle and implementation of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that those skilled in the art can make several improvements and modifications to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A flat sealing cap for a tank truck filling port, characterized in that, include: The sealing cap body (1) is disc-shaped, and the center of the sealing cap body (1) is provided with a through hole (2) coaxial with the sealing cap body (1). The first pressure block (3) and the second pressure block (4) are both installed on the sealing cap body (1), and the sealing cap body (1) is fixed to the filling port by the first pressure block (3) and the second pressure block (4); Fixing bolts (5) are used to fix the first pressure block (3) and the second pressure block (4) to the sealing cap body (1); The first pressure block (3) and the second pressure block (4) are provided with strip-shaped adjustment holes (6) at the contact positions with the sealing cap body (1). The fixing bolt (5) passes through the adjustment hole (6) and the position of the first pressure block (3) and the second pressure block (4) is adjusted by the relative sliding of the fixing bolt (5) and the adjustment hole (6).

2. The flat sealing cap for a tank truck filling port according to claim 1, characterized in that, The sealing cap body (1) is provided with an annular sealing ring at the contact position with the filling port.

3. A flat sealing cap for a tank truck filling port according to claim 1, characterized in that, The first pressing block (3) has a strip-shaped structure, and the second pressing block (4) has a Z-shaped structure.

4. A flat sealing cap for a tank truck filling port according to claim 3, characterized in that, The number of the first pressing block (3) and the second pressing block (4) is at least two, and the first pressing block (3) and the second pressing block (4) are distributed alternately.

5. A flat sealing cap for a tank truck filling port according to claim 4, characterized in that, Both the first pressure block (3) and the second pressure block (4) have a connecting hole (7) at the end away from the fixing bolt (5). The connecting hole (7) is a U-shaped structure with the opening away from the adjustment hole (6).

6. A flat sealing cap for a tank truck filling port according to claim 5, characterized in that, All connecting holes (7) are provided with anti-slip layers.

7. A flat sealing cap for a tank truck filling port according to any one of claims 1-6, characterized in that, An annular groove (8) is provided at the through hole (2), and a Y-shaped sealing ring (9) is provided inside the groove (8).

8. A flat sealing cap for a tank truck filling port according to any one of claims 1-6, characterized in that, The sealing cap body (1) is provided with at least one handle (10).

Images