A pressure control device and pressure vessel

Abstract

The utility model relates to a pressure control device and pressure vessel, pressure control device includes the slidable control rod of inserting in the valve mouth, is fixed with the sealing element on the control rod, and the sealing element is used for carrying out the pressure touch type sealing to the valve mouth, the control rod is still configured to be able to rotate around its axis, and the adjusting part is sleeved on the control rod and forms a screw nut pair with the control rod, and one end of the elastic element acts on a fixed immobile object, and the other end acts on the adjusting part, and the deformation of elastic element is changed to change the elastic force size that the elastic element exerts to the adjusting part through the movement of the adjusting part. The utility model discloses pressure control device simple structure, the volume that occupies is little, still can realize the function of automatic pressure relief, manual quick pressure relief and the adjustment container pressure upper limit simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of safety device technology, and in particular to a pressure control device. Background Technology

[0002] Some existing pressure vessels are not equipped with digital pressure display systems. After the pressure is input to the pressure vessel, it may cause the input pressure to exceed the safe pressure, which may pose a safety hazard to the pressure vessel. Therefore, it is necessary to equip pressure vessels with pressure relief devices. In particular, in order to ensure the safety of disassembling pressure vessels, pressure relief devices also need to have automatic pressure relief and manual rapid pressure relief functions. However, existing pressure relief devices with automatic pressure relief and manual rapid pressure relief functions are often complex in structure, resulting in high cost and large size of pressure vessels. Utility Model Content

[0003] To address the aforementioned problems, this utility model proposes a pressure control device with a simple structure that enables automatic pressure relief, manual rapid pressure relief, and adjustment of the upper pressure limit of the container, as well as a pressure vessel equipped with the pressure control device.

[0004] This utility model is achieved using the following technical solution:

[0005] This utility model proposes a pressure control device for installation at the valve port of a pressure vessel, comprising:

[0006] A control lever is inserted into the valve port and has a sliding stroke relative to or away from the valve port. The sliding direction of the control lever relative to the valve port is defined as a first direction, and the sliding direction of the control lever relative to the valve port is defined as a second direction. The axis of the control lever is set along the first direction. A sealing element is fixed on the control lever for pressure sealing of the valve port in the first direction. The control lever is also configured to be rotatable about its axis.

[0007] An adjusting member is looped around a control rod and forms a lead screw and nut pair with the control rod, so that rotation of the control rod can be converted into movement of the adjusting member in a first direction or a second direction.

[0008] An elastic element, one end of which acts on a fixed object, and the other end of which acts on an adjusting element. The deformation of the elastic element is changed by moving the adjusting element along a first direction or a second direction, thereby changing the magnitude of the elastic force applied by the elastic element to the adjusting element. The direction of the elastic force applied by the elastic element to the adjusting element is towards the first direction.

[0009] Preferably, the assembly channel and end cap are also included. The valve port is located at the first end of the assembly channel, and the end cap is fixedly connected to the second end of the assembly channel. The control rod passes through the end cap and is inserted into the valve port, with the control rod and end cap forming a sliding fit.

[0010] Preferably, the elastic element is a compression spring, with one end pressing against the end cap and the other end pressing against the adjusting element.

[0011] Preferably, the control rod is provided with an external thread, the adjusting member is provided with an internal thread that is threaded to the external thread, the adjusting member is also provided with a first anti-rotation part, and the assembly channel is provided with a second anti-rotation part. The first anti-rotation part and the second anti-rotation part cooperate to limit the rotation of the adjusting member.

[0012] Preferably, the first anti-rotation part is a boss structure extending radially outward on the adjusting member, and the second anti-rotation part is a groove structure extending along the axis of the control rod, with the first anti-rotation part slidingly fitted inside the second anti-rotation part.

[0013] Preferably, the end of the control rod away from the valve port protrudes from the end cap.

[0014] Preferably, a manual pull-out part is provided on the end of the control lever away from the valve port.

[0015] Based on the pressure control device described above, this utility model also proposes a pressure vessel, which includes the pressure control device described above.

[0016] The present invention has the following advantages: the pressure control device of the present invention has a simple structure, occupies a small volume, and can simultaneously realize the functions of automatic pressure relief, manual rapid pressure relief, and adjustment of the upper limit of container pressure. Attached Figure Description

[0017] Figure 1 This is an exploded view of the pressure vessel structure in the embodiment (angle 1).

[0018] Figure 2 This is an exploded view of the pressure vessel structure in the embodiment (angle two);

[0019] Figure 3 This is a cross-sectional view of the pressure vessel in the embodiment;

[0020] Figure 4 This is a schematic diagram of the container body and the adjusting component in the embodiment. Detailed Implementation

[0021] To further illustrate the various embodiments, the present invention provides accompanying drawings. These drawings are part of the disclosure of the present invention and are mainly used to illustrate the embodiments, and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these drawings, those skilled in the art should be able to understand other possible implementations and the advantages of the present invention. Components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0022] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0023] See Figure 1-4 As shown in the preferred embodiment of this utility model, a pressure vessel is provided. The pressure vessel includes a container body 1, a valve port 2 is provided on the container body 1, and the pressure vessel also includes a pressure control device installed at the valve port 2. The pressure control device further includes a control rod 3, an adjusting member 4, and an elastic member 5. The control rod 3 is inserted into the valve port 2 and has a sliding stroke that is relatively close to or away from the valve port 2. More specifically, an assembly channel 6 is provided on the container body 1, the valve port 2 is located at the first end of the assembly channel 6, and an end cap 7 is fixedly connected to the second end of the assembly channel 6. The control rod 3 passes through the end cap 7 and is inserted into the valve port 2. The control rod 3 and the end cap 7 form a sliding fit.

[0024] In other embodiments, the end cap 7 can be omitted, allowing the assembly channel 6 and the control rod 3 to form a sliding fit. Alternatively, neither the assembly channel 6 nor the end cap 7 can be provided, and a ring can be provided on the container body 1 to form a sliding fit with the control rod 3. In other words, any structure that allows the control rod 3 to form a sliding fit on the container body 1 is feasible. However, in this embodiment, the use of the assembly channel 6 and the end cap 7 can further form an installation space to accommodate and enclose the pressure control device.

[0025] Here, the sliding direction of the control lever 3 relative to the valve port 2 is defined (i.e. Figure 3 The first direction is T2 direction, and the sliding direction of the control lever 3 relative to the valve port 2 is (i.e., the direction of sliding). Figure 3 The second direction is T1 direction. A sealing element 8 is fixed on the control rod 3. The sealing element 8 is used to press and seal the valve port 2 in the first direction. For example, the sealing element 8 in this embodiment is a sealing ring. A conical sealing surface is provided on the valve port 2. The control rod 3 is inserted into the valve port 2, and the sealing effect is achieved by the sealing ring pressing against the conical sealing surface.

[0026] The control lever 3 is also configured to rotate about its axis, which is set along a first direction. In this embodiment, the control lever 3, valve port 2, and end cap 7 are all clearance-fitted, so the control lever 3 itself is rotatable along the axis of the first (second) direction. The adjusting member 4 is looped around the control lever 3 and forms a screw-nut pair with the control lever 3, so that the rotation of the control lever 3 can be converted into the movement of the adjusting member 4 along the first or second direction. More specifically, in this embodiment, the control lever 3 is provided with an external thread, the adjusting member 4 is provided with an internal thread threaded to the external thread, the adjusting member 4 is also provided with a first anti-rotation part 41, and the assembly channel 6 is provided with a second anti-rotation part 61. The first anti-rotation part 41 and the second anti-rotation part 61 cooperate to restrict the rotation of the adjusting member 4. Thus, when the control lever 3 rotates, since the adjusting member 4 is restricted from circumferential rotation, the adjusting member 4 will move along the first or second direction under the action of the threaded connection. In this embodiment, the first anti-rotation part 41 is a boss structure extending radially outward on the adjusting member 4, and the second anti-rotation part 61 is a groove structure extending along the axis of the control rod 3. The first anti-rotation part 41 is slidably fitted inside the second anti-rotation part 61. Of course, in other embodiments, the first anti-rotation part 41 can be set as a groove structure and the second anti-rotation part 61 can be set as a boss structure. Or, in other words, it is feasible as long as a structure that can form an anti-rotation fit with the adjusting member 4 is provided on the container body 1.

[0027] In this embodiment, the elastic element 5 is a compression spring, sleeved on the control rod 3. One end of the elastic element 5 acts on the inner end of the end cap 7, and the other end acts on the adjusting element 4. Thus, when the adjusting element 4 moves in the second direction, the elastic element 5 is further compressed, resulting in an increase in the deformation of the elastic element 5 and further energy storage. The elastic force of the elastic element 5 acting on the adjusting element 4 and the control rod 3 increases, increasing the pressure exerted downward on the valve port 2 by the sealing element 8 on the control rod 3, enhancing the sealing effect, and increasing the upper limit of the pressure threshold that the pressure vessel can withstand. Conversely, when the adjusting element 4 moves in the first direction, the deformation of the elastic element 5 decreases, and the elastic force of the elastic element 5 acting on the adjusting element 4 and the control rod 3 decreases, reducing the pressure exerted downward on the valve port 2 by the sealing element 8 on the control rod 3, weakening the sealing effect, and decreasing the upper limit of the pressure threshold that the pressure vessel can withstand. Therefore, the pressure control device can adjust the upper limit of the container pressure by rotating the control rod 3.

[0028] One end of the elastic element 5 acts on the adjusting element 4, but the other end does not necessarily have to act on the end cap 7. It can act on a fixed object, such as the container body 1 or other structures fixedly connected to the container body 1.

[0029] In this embodiment, the elastic element 5 is a compression spring. However, it is understood that the elastic element 5 can also be adapted to other elastic element structures such as a spring sheet or a tension spring, but the installation position will need to be modified accordingly. To reduce space occupation, the elastic element 5 can also be set to a special elastic element structure such as a tower spring.

[0030] Based on the structure of the pressure control device described above, it can be understood that once the pressure inside the container acts on the end of the control rod 3 in the first direction with a force large enough to overcome the elastic force of the elastic element 5, the control rod 3 will be automatically pushed open in the second direction, allowing the container to automatically depressurize. Alternatively, the container can be manually depressurized by pulling the control rod 3 out in the second direction. After the pulling force applied to the control rod 3 is removed, the control rod 3 can return to its original position under the elastic force of the elastic element 5. Therefore, the end of the control rod 3 away from the valve port 2 is exposed above the end cap 7, and a manual pull-out part 31 is provided on the end of the control rod 3 away from the valve port for easy operation. After quickly depressurizing the pressure vessel by pulling out the control rod 3, the pressure vessel can be safely disassembled.

[0031] The pressure control device in this embodiment has a simple structure, occupies a small volume, and can simultaneously realize the functions of automatic pressure relief, manual rapid pressure relief, and adjustment of the upper limit of container pressure.

[0032] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that any changes in form and detail made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims fall within the protection scope of the present invention.

Claims

1. A pressure control device for installation at the valve port of a pressure vessel, characterized in that, include: A control lever is inserted into the valve port and has a sliding stroke relative to or away from the valve port. The sliding direction of the control lever relative to the valve port is defined as a first direction, and the sliding direction of the control lever relative to the valve port is defined as a second direction. The axis of the control lever is arranged along the first direction. A sealing element is fixedly provided on the control lever for pressure-contact sealing of the valve port in the first direction. The control lever is also configured to rotate about its axis. An adjusting element, which is looped around a control lever and forms a lead screw and nut pair with the control lever, so that rotation of the control lever can be converted into movement of the adjusting element in a first direction or a second direction. An elastic element, one end of which acts on a fixed object, and the other end of which acts on an adjusting element. The deformation of the elastic element is changed by moving the adjusting element along a first direction or a second direction, thereby changing the magnitude of the elastic force applied by the elastic element to the adjusting element. The direction of the elastic force applied by the elastic element to the adjusting element is towards the first direction.

2. The pressure control device according to claim 1, characterized in that, It also includes an assembly channel and an end cap. The valve port is located at the first end of the assembly channel, and the end cap is fixedly connected to the second end of the assembly channel. The control rod passes through the end cap and is inserted into the valve port, with the control rod and the end cap forming a sliding fit.

3. The pressure control device according to claim 2, characterized in that, The elastic element is a compression spring, with one end pressing against the end cap and the other end pressing against the adjusting element.

4. The pressure control device according to claim 2, characterized in that, The control rod is provided with an external thread, the adjusting member is provided with an internal thread that is threaded to the external thread, the adjusting member is also provided with a first anti-rotation part, and the assembly channel is provided with a second anti-rotation part. The first anti-rotation part and the second anti-rotation part cooperate to limit the rotation of the adjusting member.

5. The pressure control device according to claim 4, characterized in that, The first anti-rotation part is a boss structure that extends radially outward on the adjusting member, and the second anti-rotation part is a sliding groove structure that extends along the axis of the control rod. The first anti-rotation part slides within the second anti-rotation part.

6. The pressure control device according to claim 2, characterized in that, The end of the control lever away from the valve port protrudes from the end cap.

7. The pressure control device according to claim 6, characterized in that, A manual pull-out part is provided on the end of the control lever away from the valve port.

8. A pressure vessel, characterized in that, Includes the pressure control device according to any one of claims 1-7.

Images