High-pressure-resistant shell assembly

Abstract

The utility model relates to the technical field of hydrogen energy, in particular to a high-pressure-resistant shell assembly which comprises a mounting shell, a mounting base, an anti-loosening mechanism, a fixing support, a mounting base, a circuit board and a sensor. A lead-out hole penetrates through the center of the top end of the mounting shell; the mounting base is fixedly connected with the bottom end of the mounting shell; the anti-loosening mechanism is arranged on the peripheral surface of the mounting base; the number of the fixing supports is two, the two fixing supports are both arranged in the mounting shell, and one end of each fixing support is connected with the mounting base. The mounting base is arranged in the mounting base, and the circuit board is arranged in the mounting shell; and the sensor is arranged in the mounting base. Through cooperative arrangement of threaded connection and an anti-loosening mechanism, the sealing performance of connection is effectively improved, a first limiting ring makes contact with a second limiting ring under the action of a pre-tightening spring to limit the mounting base, loosening and falling between the mounting base and the high-pressure hydrogen storage container are avoided, and safety and stability are further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrogen energy, in particular to a high-pressure resistant shell component. Background Art

[0002] In the field of hydrogen fuel cell vehicles, hydrogen sensors are widely used in key locations such as hydrogen storage tanks, hydrogen supply systems, and fuel cell stacks. They ensure the normal operation and safety of hydrogen fuel cell vehicles by monitoring changes in hydrogen pressure in real time.

[0003] A Chinese patent with publication number CN111208260A discloses a hydrogen sensor, which includes a first shell, a terminal fixed to the first shell, a second shell fixed to the first shell, a circuit board connected to the terminal signal, and a sensor component fixed to the circuit board. The first shell includes a main body with a groove, a plug-in portion with a plug-in interface extending forward from the main body, and a side surrounding the groove. The second shell is provided with a fixing portion sealed together with the side and a through hole for the sensor component to extend into. The sensor component includes a shell and a sensor element placed in the shell, and the shell is provided with a connecting hole connecting the interior of the shell with the outside world. The hydrogen sensor also includes an annular sealing ring provided between the second shell and the shell. The sealing ring is used to prevent external gas from entering the receiving cavity. While detecting hydrogen, the hydrogen sensor of the present invention can prevent hydrogen from entering the receiving cavity of the hydrogen sensor and contacting the electronic components in the receiving cavity to cause an explosion.

[0004] However, the above technical solution has the following shortcomings: the device is connected to the high-pressure hydrogen storage container by plugging, and the plug-in connection method is difficult to ensure the sealing of the connection, there is a greater risk of leakage, and a greater safety hazard. Utility Model Content

[0005] The purpose of the utility model is to address the problems existing in the background technology and to propose a high-pressure resistant shell assembly.

[0006] The technical solution of the utility model is: a high-pressure resistant shell assembly, comprising:

[0007] The installation shell has a lead-out hole formed through the center of the top thereof;

[0008] A mounting base, which is fixedly connected to the bottom end of the mounting shell;

[0009] An anti-loosening mechanism is provided on the peripheral surface of the mounting base, and one end of the anti-loosening mechanism is connected to the mounting base;

[0010] Two fixing brackets are provided, both of which are arranged in the mounting shell, and one end of the fixing bracket is connected to the mounting base;

[0011] The mounting base is provided in the mounting base,

[0012] A circuit board is disposed in the mounting shell, and one end of the circuit board is connected to the mounting base via a fixing bracket;

[0013] The sensor is arranged in the mounting base, and the sensor is connected to the mounting base.

[0014] Preferably, the anti-loosening mechanism includes a mounting tube, a first limiting ring, a second limiting ring, an adjusting nut and a pre-tightening spring; the mounting tube is mounted on the hydrogen cylinder, the first limiting ring is slidably connected to the inner wall of the mounting tube, the second limiting ring is fixedly connected to the mounting base, the second limiting ring is adapted to the first limiting ring, the adjusting nut is fixedly connected to the second limiting ring, and multiple pre-tightening springs are provided, one end of the pre-tightening spring is fixedly connected to the mounting tube, and the other end of the pre-tightening spring is fixedly connected to the first limiting ring.

[0015] Preferably, it also includes an adjustment block, two adjustment blocks are provided, one end of the two adjustment blocks is fixedly connected to the circumference of the first limiting ring, and a movable hole adapted to the adjustment block is opened through the mounting tube, and the adjustment block passes through the mounting tube through the movable hole and extends to the outside of the mounting tube.

[0016] Preferably, two adjustment holes are provided on the top edge of the mounting shell, and the two adjustment holes are symmetrically arranged for adjusting the circuit board.

[0017] Preferably, the fixing bracket is L-shaped, the upper half of the fixing bracket is provided with a circuit board fixing hole, and the lower half of the fixing bracket is provided with a bracket fixing hole.

[0018] Preferably, the circuit board is welded to the welding pins on the top of the mounting base, and the sensor is welded to the welding pins on the bottom of the mounting base.

[0019] Compared with the prior art, the above technical solution of the present invention has the following beneficial technical effects:

[0020] The circuit board is vertically mounted on the mounting base through an L-shaped fixing bracket, and the mounting shell and the mounting base are fixed by welding to prevent external factors from interfering with the electronic components of the circuit board and improve the stability of the hydrogen sensor; the mounting base is tightly connected to the interface of the high-pressure hydrogen storage container to form a hydrogen sealed detection chamber, which prevents high-pressure hydrogen from damaging the circuit board inside the sensor through leakage and impact, and improves the sensor's high-pressure resistance, safety and stability during use; by adopting the coordinated setting of threaded connection and anti-loosening mechanism, the mounting base and the high-pressure hydrogen storage container are threadedly connected, which not only effectively improves the sealing of the connection, but also facilitates later maintenance and replacement. The first limit ring contacts the second limit ring under the action of the pre-tightening spring to limit the mounting base, thereby preventing loosening and falling between the mounting base and the high-pressure hydrogen storage container, further improving safety and stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A perspective view of an embodiment of the present invention;

[0022] Figure 2 A cross-sectional view of an embodiment of the present invention;

[0023] Figure 3 This is a cross-sectional view of a mounting base in an embodiment of the present invention;

[0024] Figure 4 A three-dimensional diagram of a first limiting ring in an embodiment of the present invention;

[0025] Figure 5 This is a three-dimensional diagram of a fixing bracket in an embodiment of the present invention.

[0026] Figure markings: 1. Mounting shell; 2. Lead-out hole; 3. Mounting base; 4. Anti-loosening mechanism; 41. Mounting cylinder; 42. First limiting ring; 43. Second limiting ring; 44. Adjusting nut; 45. Preload spring; 46. Adjusting block; 47. Movable hole; 5. Fixing bracket; 6. Mounting base; 7. Circuit board; 8. Sensor; 9. Adjusting hole; 10. Circuit board fixing hole; 11. Bracket fixing hole. DETAILED DESCRIPTION

[0027] Example 1

[0028] like Figure 1-5 As shown, the utility model proposes a high-pressure resistant housing assembly, including a mounting shell 1, a mounting base 3, an anti-loosening mechanism 4, a fixing bracket 5, a mounting base 6, a circuit board 7 and a sensor 8;

[0029] A lead-out hole 2 is formed through the center of the top of the mounting shell 1. Two adjustment holes 9 are formed on the top edge of the mounting shell 1. The two adjustment holes 9 are symmetrically arranged for adjusting the circuit board 7.

[0030] The mounting base 3 is fixedly connected to the bottom end of the mounting shell 1, and the surface of the mounting base 3 is provided with threads for connecting to the hydrogen tank;

[0031] The anti-loosening mechanism 4 is provided on the peripheral surface of the mounting base 3, and one end of the anti-loosening mechanism 4 is connected to the mounting base 3;

[0032] Two fixing brackets 5 are provided, both of which are arranged in the mounting shell 1. One end of the fixing bracket 5 is connected to the mounting base 3. The fixing bracket 5 is L-shaped. The upper part of the fixing bracket 5 is provided with a circuit board fixing hole 10, and the lower part of the fixing bracket 5 is provided with a bracket fixing hole 11.

[0033] The mounting base 6 is arranged in the mounting base 3.

[0034] The circuit board 7 is disposed in the mounting housing 1, and one end of the circuit board 7 is connected to the mounting base 3 via a fixing bracket 5;

[0035] The sensor 8 is arranged in the mounting base 3. The sensor 8 is a hydrogen sensor used to monitor the changes in hydrogen pressure in real time. The sensor 8 is connected to the mounting base 6. The circuit board 7 is welded to the welding feet on the top of the mounting base 6, and the sensor 8 is welded to the welding feet on the bottom of the mounting base 6.

[0036] Example 2

[0037] like Figure 1-4 As shown, the utility model proposes a high-pressure resistant shell assembly. Compared with the first embodiment, the present embodiment further specifically discloses the structure of the anti-loosening mechanism 4; the anti-loosening mechanism 4 includes a mounting cylinder 41, a first limiting ring 42, a second limiting ring 43, an adjusting block 46, an adjusting nut 44 and a preload spring 45; the mounting cylinder 41 is mounted on the hydrogen cylinder, the first limiting ring 42 is slidably connected to the inner wall of the mounting cylinder 41, the second limiting ring 43 is fixedly connected to the mounting base 3, and the second limiting ring 43 is adapted to the first limiting ring 42. The adjusting nut 44 is fixedly connected to the second limiting ring 43, and a plurality of pre-tightening springs 45 are provided. One end of the pre-tightening spring 45 is fixedly connected to the mounting tube 41, and the other end of the pre-tightening spring 45 is fixedly connected to the first limiting ring 42. There are two adjusting blocks 46, and one end of the two adjusting blocks 46 is fixedly connected to the circumference of the first limiting ring 42. The mounting tube 41 is penetrated by a movable hole 47 adapted to the adjusting block 46. The adjusting block 46 penetrates the mounting tube 41 through the movable hole 47 and extends to the outside of the mounting tube 41.

[0038] Weld the sensor 8 to the welding pins at the bottom of the mounting base 6, and weld the circuit board 7 to the welding pins at the upper end of the mounting base 6 through wires. Then fix the circuit board 7 to the mounting base 3 through the fixing bracket 5, and then insert the circuit board 7 into the mounting shell 1. Then weld the mounting shell 1 and the mounting base 3 together to complete the assembly between the sensor 8 and the mounting shell 1. When the sensor 8 needs to be installed on the hydrogen tank, it is necessary to first weld the mounting cylinder 41 to the mounting shell 1, and rotate the adjusting nut 44 to drive the mounting base 3 to screw into the hydrogen tank. The adjusting nut 44 contacts the mounting cylinder 41, and the first limiting ring 42 contacts the second limiting ring 43 under the action of the preload spring 45 to limit the mounting base 3 to prevent the mounting base 3 from loosening and falling off.

[0039] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Various changes can be made within the knowledge scope of those skilled in the art without departing from the purpose of the present invention.

Claims

1. A high pressure resistant housing assembly, characterized in that: include: The installation shell (1) has a lead-out hole (2) extending through the center of the top end thereof; A mounting base (3) fixedly connected to the bottom end of the mounting shell (1); An anti-loosening mechanism (4) is provided on the peripheral surface of the mounting base (3), and one end of the anti-loosening mechanism (4) is connected to the mounting base (3); Two fixed brackets (5) are provided, both of which are arranged in the mounting shell (1), and one end of the fixed bracket (5) is connected to the mounting base (3); A mounting base (6) is provided in the mounting base (3), A circuit board (7) is arranged in the mounting shell (1), and one end of the circuit board (7) is connected to the mounting base (3) via a fixing bracket (5); The sensor (8) is arranged in the mounting base (3), and the sensor (8) is connected to the mounting base (6).

2. A high pressure resistant casing assembly according to claim 1, characterized in that: The anti-loosening mechanism (4) comprises a mounting tube (41), a first limiting ring (42), a second limiting ring (43), an adjusting nut (44) and a pre-tightening spring (45); the mounting tube (41) is mounted on the hydrogen cylinder, the first limiting ring (42) is slidably connected to the inner wall of the mounting tube (41), the second limiting ring (43) is fixedly connected to the mounting base (3), the second limiting ring (43) is adapted to the first limiting ring (42), the adjusting nut (44) is fixedly connected to the second limiting ring (43), a plurality of pre-tightening springs (45) are provided, one end of the pre-tightening spring (45) is fixedly connected to the mounting tube (41), and the other end of the pre-tightening spring (45) is fixedly connected to the first limiting ring (42).

3. The high pressure resistant housing assembly according to claim 2, characterized in that: The invention also includes an adjusting block (46), two adjusting blocks (46) are provided, one end of the two adjusting blocks (46) is fixedly connected to the circumference of the first limiting ring (42), and a movable hole (47) adapted to the adjusting block (46) is opened through the mounting tube (41), and the adjusting block (46) passes through the mounting tube (41) through the movable hole (47) and extends to the outside of the mounting tube (41).

4. The high pressure resistant housing assembly according to claim 1, characterized in that: Two adjustment holes (9) are provided on the top edge of the mounting shell (1), and the two adjustment holes (9) are symmetrically arranged for adjusting the circuit board (7).

5. The high pressure resistant housing assembly according to claim 1, characterized in that: The fixing bracket (5) is L-shaped, the upper half of the fixing bracket (5) is provided with a circuit board fixing hole (10), and the lower half of the fixing bracket (5) is provided with a bracket fixing hole (11) extending therethrough.

6. The high pressure resistant housing assembly according to claim 1, characterized in that: The circuit board (7) is welded to the welding pins on the top of the mounting base (6), and the sensor (8) is welded to the welding pins on the bottom of the mounting base (6).

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