CN220378575U - Energy accumulator group with pressure alarm function - Google Patents

Abstract

The utility model discloses an energy accumulator group with a pressure alarm function, which comprises a supporting component, a pressure alarm component and a pressure alarm component, wherein the supporting component comprises a moving part and a fixing part; the main body assembly comprises a storage part, an alarm part and an inflation part, wherein the inflation part and the alarm part are arranged on the storage part. The utility model has the beneficial effects that: the alarm part that sets up through the main part subassembly carries out pressure detection to the storage part, reminds the staff to overhaul this energy storage ware when pressure leakage, whether the internal gas of real-time supervision energy storage ware leaks, in time produces alarm signal, convenient to use, the pressure release is carried out to the main part subassembly through the bleeder subassembly that sets up, be convenient for carry out the pressure release to the energy storage ware when energy storage ware storage jar pressure is too high, improve the life of energy storage ware storage jar, protect and fix the main part subassembly through the supporting component that sets up, object user moves after fixing the main part subassembly.

Description

Energy accumulator group with pressure alarm function

Technical Field

The utility model relates to the technical field of energy accumulators, in particular to an energy accumulator group with a pressure alarm function.

Background

The accumulator is an energy storage device in a hydropneumatic system. The energy in the system is converted into compression energy or potential energy to be stored at proper time, and the compression energy or potential energy is converted into energy such as hydraulic pressure or air pressure to be released when the system is needed, so that the system is supplied again. The Chinese patent application number is: the buffer device of the energy accumulator of CN202120986992.5 has the beneficial effects that: this buffer of energy storage ware, when the motion piston received pressure to the bottom slip, at first can promote buffer gear and remove, two buffer slide through motion piston and side pass through a plurality of expansion assembly fixed connection, the buffer slide of both sides can be through the cooperation slip between side slider and the spout to cylinder body tip removal, when the pressure that motion piston side received is greater than expansion assembly's holding power, the inside telescopic link of expansion assembly and the spring body that the outside cup jointed can shrink, until shrink to the inside of the spacing groove of motion piston and buffer slide inside seting up, can cushion the motion piston of removal simultaneously, the movement speed is too fast when avoiding buffer slide atress great, thereby can play better guard action to motion piston and cylinder body inside. The buffer device of the energy accumulator has the following defects: the utility model provides an energy storage device group with pressure alarming function, be convenient for carry out the pressure measurement to the energy storage device inside when using, be convenient for detect whether inside atmospheric pressure is revealed, also be inconvenient for the staff observe and in time overhaul, and be inconvenient for carry out the pressure release to the energy storage device when pressure is too high, reduce energy storage device storage tank life, be convenient for carry out the pressure measurement to the energy storage device inside when using according to above problem, be convenient for detect whether inside atmospheric pressure is revealed, also be convenient for the staff observe and in time overhaul, and be convenient for carry out the pressure release to the energy storage device when pressure is too high, increase energy storage device storage tank life.

Disclosure of Invention

This section is intended to outline some aspects of embodiments of the utility model and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the description summary and in the title of the application, to avoid obscuring the purpose of this section, the description summary and the title of the utility model, which should not be used to limit the scope of the utility model.

The present utility model has been made in view of the above and/or problems occurring in the prior art accumulator sets having a pressure warning function.

Therefore, the utility model aims to solve the problems that the device is inconvenient to measure the pressure in the accumulator when in use, is inconvenient to detect whether the internal air pressure leaks, is inconvenient for staff to observe and overhaul in time, is inconvenient to decompress the accumulator when the pressure is too high, and reduces the service life of the accumulator storage tank.

In order to solve the technical problems, the utility model provides the following technical scheme: an energy accumulator group with a pressure alarm function comprises a supporting component, a movable component and a fixed component, wherein the fixed component is fixed on the top of the movable component; the main body assembly comprises a storage part, an alarm part and an inflation part, wherein the inflation part and the alarm part are arranged on the storage part, and the storage part is arranged on the fixing part; the pressure release assembly comprises a pressure release piece and a rotating piece, wherein the rotating piece is arranged on the pressure release piece, and the pressure release piece is arranged on the storage piece.

As a preferred embodiment of the accumulator set with pressure warning function according to the utility model, the accumulator set comprises: the moving part comprises a supporting seat, supporting legs and universal wheels, wherein the universal wheels are fixed at the bottom of the supporting seat, and the supporting legs are fixed at the top of the supporting seat.

As a preferred embodiment of the accumulator set with pressure warning function according to the utility model, the accumulator set comprises: the fixing piece comprises a fixing box, a rubber pad, an annular plate and a first spring, wherein one end of the first spring is fixed on the inner side of the fixing box, the annular plate is arranged in the fixing box, the rubber pad is glued on the annular plate, and the fixing box is arranged at the top of the moving piece.

As a preferred embodiment of the accumulator set with pressure warning function according to the utility model, the accumulator set comprises: the fixing piece further comprises a fixing ring, a second spring and a fixing seat, wherein the fixing seat is fixed at the bottom of the fixing box, the second spring is arranged on the fixing seat, and the fixing ring is fixed at one end of the second spring.

As a preferred embodiment of the accumulator set with pressure warning function according to the utility model, the accumulator set comprises: the storage piece comprises an inflating tank, a piston, a shell, a buffer plate, a third spring and a circular plate, wherein the third spring is arranged between the buffer plate and the circular plate, the circular plate and the buffer plate are both arranged in the shell, the piston is arranged in the inflating tank, and the inflating tank is arranged in the shell.

As a preferred embodiment of the accumulator set with pressure warning function according to the utility model, the accumulator set comprises: the storage piece further comprises a round tube, a connecting ring, a first sealing plug and a connecting tube, wherein the connecting tube is communicated with one end of the shell, the first sealing plug is arranged in one end of the connecting ring, and the round tube is arranged at one end of the shell.

As a preferred embodiment of the accumulator set with pressure warning function according to the utility model, the accumulator set comprises: the alarm comprises a pressure gauge, a magnetic sensor, magnetic steel, an alarm lamp and a fixing plate, wherein the fixing plate is fixed in one end of the shell, the alarm lamp is fixed on one end of the magnetic sensor, the magnetic steel is fixed on the fixing plate, the magnetic sensor is attached to the outer side of the magnetic steel, and the pressure gauge is arranged on one end of the magnetic sensor.

As a preferred embodiment of the accumulator set with pressure warning function according to the utility model, the accumulator set comprises: the inflatable part comprises a connector pipe, an air vent pipe, a second sealing plug and an inflation pipe, wherein the inflation pipe is communicated with the inflation tank, the second sealing plug is plugged at one end of the air vent pipe, the air vent pipe is communicated with the other end of the shell, and the connector pipe is arranged at the other end of the air vent pipe.

As a preferred embodiment of the accumulator set with pressure warning function according to the utility model, the accumulator set comprises: the pressure relief piece comprises a pressure relief pipe, a fixing frame, a pressure relief box, a pressure relief cavity, a conveying cavity and a first rubber plug, wherein the first rubber plug is fixed on the top of the pressure relief box, the conveying cavity is communicated with the pressure relief box, the pressure relief cavity is arranged in the pressure relief box, the pressure relief box is arranged on the fixing frame, one end of the fixing frame is fixed on the shell, and the pressure relief pipe is communicated with the air filling tank.

As a preferred embodiment of the accumulator set with pressure warning function according to the utility model, the accumulator set comprises: the rotating piece comprises a fixed shell, a valve, a second rubber plug, a threaded rod, a driving rod, a fourth spring and a fixed block, wherein the fixed block is fixed on one end of the driving rod, the fourth spring is sleeved on the driving rod, one end of the threaded rod is welded on the other end of the driving rod, the second rubber plug is arranged on one end of the fixed shell, the valve is in threaded connection with the other end of the threaded rod, and one end of the fixed shell is fixedly connected with the bottom of the pressure relief box.

The utility model has the beneficial effects that: the alarm part that sets up through the main part subassembly carries out pressure detection to the storage part, reminds the staff to overhaul this energy storage ware when pressure leakage, whether the internal gas of real-time supervision energy storage ware leaks, in time produces alarm signal, convenient to use, the pressure release is carried out to the main part subassembly through the bleeder subassembly that sets up, be convenient for carry out the pressure release to the energy storage ware when energy storage ware storage jar pressure is too high, improve the life of energy storage ware storage jar, protect and fix the main part subassembly through the supporting component that sets up, object user moves after fixing the main part subassembly.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Wherein:

fig. 1 is an overall construction diagram of an accumulator unit device with a pressure warning function.

Fig. 2 is a block diagram of a main body assembly of an accumulator set with a pressure warning function.

Fig. 3 is a cross-sectional structural view of an accumulator set having a pressure alarm function.

Fig. 4 is a block diagram of a pressure relief assembly of an accumulator set with a pressure warning function.

Fig. 5 is a block diagram of a support assembly of an accumulator set with a pressure warning function.

Fig. 6 is a cross-sectional structural view of a support assembly of an accumulator set with a pressure warning function.

Detailed Description

In order that the above-recited objects, features and advantages of the present utility model will become more readily apparent, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, but the present utility model may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present utility model is not limited to the specific embodiments disclosed below.

Further, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic can be included in at least one implementation of the utility model. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.

Example 1

Referring to fig. 1 and 2, in a first embodiment of the present utility model, an accumulator set having a pressure alarm function is provided, which includes a support assembly 100, a body assembly 200, and a pressure relief assembly 300, the body assembly 200 is relieved by the pressure relief assembly 300, the body assembly 200 and the pressure relief assembly 300 are moved by the support assembly 100, and the pressure is detected by the body assembly 200.

The support assembly 100 includes a moving member 101 and a fixing member 102, and the fixing member 102 is fixed on top of the moving member 101.

The main body assembly 200 is placed by the fixed assembly, and the main body assembly 200 is driven to move by the moving member 101.

The main body assembly 200 comprises a storage member 201, an alarm member 202 and an inflation member 203, wherein the inflation member 203 and the alarm member 202 are arranged on the storage member 201, and the storage member 201 is arranged on the fixing member 102.

The storage piece 201 is inflated through the connection of the arranged inflation piece 203, and the storage piece 201 is detected and warned through the warning piece 202.

The pressure release assembly 300 comprises a pressure release member 301 and a rotating member 302, wherein the rotating member 302 is arranged on the pressure release member 301, and the pressure release member 301 is arranged on the storage member 201.

The rotating piece 302 is driven by the buffer piece 301 to release air to the main body.

Example 2

Referring to fig. 3 to 6, this embodiment is based on the previous embodiment, which is a second embodiment of the present utility model.

Specifically, the moving member 101 includes a supporting base 101a, supporting legs 101b, and universal wheels 101c, wherein the universal wheels 101c are fixed to the bottom of the supporting base 101a, and the supporting legs 101b are fixed to the top of the supporting base 101 a.

The universal wheel 101c is arranged as a self-locking universal wheel 101c, the universal wheel is convenient to fix after moving, and the supporting legs 101b and the supporting seats 101a play a role in fixing.

Specifically, the fixing member 102 includes a fixing case 102a, a rubber pad 102b, an annular plate 102e, and a first spring 102d, one end of the first spring 102d is fixed to the inner side of the fixing case 102a, the annular plate 102e is disposed in the fixing case 102a, the rubber pad 102b is glued to the annular plate 102e, and the fixing case 102a is disposed on the top of the moving member 101.

The other end of the first spring 102d is fixed to one side of the annular plate 102e, the rubber pad 102b reduces wear of the body assembly 200 when it is placed and moved, and the fixing case 102a is fixed to the support leg 101 b.

Specifically, the fixing member 102 further includes a fixing ring 102c, a second spring 102f, and a fixing base 102g, the fixing base 102g is fixed to the bottom of the fixing case 102a, the second spring 102f is disposed on the fixing base 102g, and the fixing ring 102c is fixed to one end of the second spring 102 f.

The second springs 102f are provided with a plurality of groups, the other ends of the plurality of groups of second springs 102f are fixed on the fixed seat 102g, the main body assembly 200 is damped during movement, and the main body assembly 200 is fixed through the fixed ring 102 c.

Specifically, the storage member 201 includes an air charge tank 201a, a piston 201b, a housing 201c, a buffer plate 201d, a third spring 201e, and a circular plate 201f, the third spring 201e is disposed between the buffer plate 201d and the circular plate 201f, the circular plate 201f and the buffer plate 201d are both disposed in the housing 201c, the piston 201b is disposed in the air charge tank 201a, and the air charge tank 201a is disposed in the housing 201 c.

The third springs 201e are arranged in a plurality of groups, the plurality of groups of springs are fixed on the buffer plate 201d, and the inflated inflation tank 201a is buffered through the circular plate 201f, the buffer plate 201d and the third springs 201e, so that the service life of the inflation tank 201a is prolonged.

Specifically, the storage member 201 further includes a circular tube 201g, a connecting ring 201h, a first sealing plug 201i, and a connecting tube 201j, where the connecting tube 201j is connected to one end of the housing 201c, the first sealing plug 201i is disposed in one end of the connecting ring 201h, and the circular tube 201g is disposed on one end of the housing 201 c.

The connection is performed through the connection ring 201h, the absolute connection port of the first sealing plug 201i is used for sealing, gas leakage is prevented, and the connection pipe 201j is plugged into the center of the first sealing plug 201 i.

Specifically, the alarm 202 includes a pressure gauge 202a, a magnetic sensor 202b, a magnetic steel 202c, an alarm lamp 202d and a fixing plate 202e, the fixing plate 202e is fixed in one end of the housing 201c, the alarm lamp 202d is fixed on one end of the magnetic sensor 202b, the magnetic steel 202c is fixed on the fixing plate 202e, the magnetic sensor 202b is attached to the outer side of the magnetic steel 202c, and the pressure gauge 202a is arranged on one end of the magnetic sensor 202 b.

The fixed magnetic steel 202c and the magnetic sensor 202b are fixed through the fixed plate 202e, the pressure test is carried out through the piston 201b, the magnetic steel 202c and the magnetic sensor, the pressure gauge 202a is used for detecting, and the alarm is used for alarming when the pressure exceeds the standard.

Specifically, the inflatable member 203 includes a connector 203a, a vent 203b, a second sealing plug 203c, and an inflation tube 203d, the inflation tube 203d is connected to the inflation tank 201a, the second sealing plug 203c is plugged onto one end of the vent 203b, the vent 203b is connected to the other end of the housing 201c, and the connector 203a is disposed on the other end of the vent 203 b.

The vent pipe 203b is sealed by the second sealing plug 203c, and the air tube 203d is inserted into the second sealing tank and connected by the interface tube 203 a.

Example 3

Referring to fig. 3 and 4, a third embodiment of the present utility model is based on the first two embodiments.

Specifically, the pressure relief piece 301 includes a pressure relief tube 301a, a fixing frame 301b, a pressure relief box 301c, a pressure relief cavity 301d, a conveying cavity 301e and a first rubber plug 301f, wherein the first rubber plug 301f is fixed on the top of the pressure relief box 301c, the conveying cavity 301e is communicated with the pressure relief box 301c, the pressure relief cavity 301d is arranged in the pressure relief box 301c, the pressure relief box 301c is arranged on the fixing frame 301b, one end of the fixing frame 301b is fixed on the shell 201c, and the pressure relief tube 301a is communicated with the air charging tank 201 a.

The pressure relief pipe 301a is communicated with the air charging tank 201a through the shell 201c, redundant air pressure in the air charging tank 201a is conveyed into the pressure relief cavity 301d through the pressure relief pipe 301a conveying cavity 301e, the pressure relief protection is carried out on the air charging tank 201a through the pressure relief cavity 301d, and damage caused by overlarge pressure of the air charging tank 201a is prevented.

Specifically, the rotating member 302 includes a fixed housing 302a, a valve 302b, a second rubber stopper 302c, a threaded rod 302d, a driving rod 302e, a fourth spring 302f, and a fixed block 302g, wherein the fixed block 302g is fixed to one end of the driving rod 302e, the fourth spring 302f is sleeved on the driving rod 302e, one end of the threaded rod 302d is welded to the other end of the driving rod 302e, the second rubber stopper 302c is disposed on one end of the fixed housing 302a, the valve 302b is screwed to the other end of the threaded rod 302d, and one end of the fixed housing 302a is fixedly connected to the bottom of the pressure relief box 301 c.

The valve 302b drives the threaded rod 302d and the driving rod 302e to rotate, so that the driving rod 302e pushes the pressure release cavity 301d to release pressure, and the fixed shell 302a is sealed through the second rubber plug 302c to prevent air leakage.

When the pressure gauge is in use, when the air charging tank 201a leaks, the piston 201b in the energy accumulator moves upwards, so that the pressure of compressed gas is consistent with the pressure value of a hydraulic system, along with continuous leakage of high-pressure gas in the air charging tank 201a, the piston 201b in the energy accumulator gradually moves upwards to be gradually close to the magnetic steel 202c, the magnetic steel 202c is contacted with the magnetic sensor 202b to sense, the pressure value is sensed on the pressure gauge 202a, when the pressure gauge reaches a preset alarm point, the alarm is given out through the alarm, a worker is prompted to overhaul the energy accumulator, whether the gas in the energy accumulator leaks to a preset degree is monitored in real time, an alarm signal is timely generated, and the pressure gauge is convenient to use; the gas in the air tank 201a is transmitted through the air leakage pipe and the conveying cavity 301e, when the air pressure in the air tank 201a is too high, the gas in the air tank 201a is conveyed to the inside of the pressure release cavity 301d through the air transmission and leakage pipe and the conveying cavity 301e, when the pressure is larger than the resistance of the fourth spring 302f, the gas is separated from the pressure release cavity 301d through the driving rod 302e, the gas in the pressure release cavity 301d is released under the support of the driving rod 302e and the fourth spring 302f, when the gas in the pressure release box 301c is required to be completely released, the threaded rod 302d and the driving rod 302e are driven to move through the rotary valve 302b for pressure release, when the pressure of the air tank 201a is too high, the pressure is conveniently released for an accumulator, and the service life of the accumulator storage tank is prolonged; through using the personnel to place main part subassembly 200 in fixed case 102a, through carrying out shock attenuation protection to main part subassembly 200 under the cooperation of rubber pad 102b, solid fixed ring 102c, fixing base 102g and spring, carry out the shock attenuation through multiunit first spring 102d and second spring 102f when removing, make main part subassembly 200 be convenient for protect main part subassembly 200 when removing, drive the support through universal wheel 101c and remove, the convenience of use personnel uses.

It should be noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present utility model may be modified or substituted without departing from the spirit and scope of the technical solution of the present utility model, which is intended to be covered in the scope of the claims of the present utility model.

Claims (10)

1. An energy accumulator group with pressure alarming function, which is characterized in that: comprising the steps of (a) a step of,

a support assembly (100) comprising a moving member (101) and a fixed member (102), the fixed member (102) being fixed on top of the moving member (101);

the main body assembly (200) comprises a storage piece (201), an alarm piece (202) and an inflation piece (203), wherein the inflation piece (203) and the alarm piece (202) are arranged on the storage piece (201), and the storage piece (201) is arranged on the fixing piece (102);

pressure release subassembly (300), including relief (301) and rotating member (302), rotating member (302) set up in on relief (301), relief (301) set up in on storage piece (201).

2. The accumulator set with pressure alarm function according to claim 1, characterized in that: the movable part (101) comprises a supporting seat (101 a), supporting legs (101 b) and universal wheels (101 c), wherein the universal wheels (101 c) are fixed at the bottom of the supporting seat (101 a), and the supporting legs (101 b) are fixed at the top of the supporting seat (101 a).

3. The accumulator set with pressure alarm function according to claim 2, characterized in that: the fixing piece (102) comprises a fixing box (102 a), a rubber pad (102 b), an annular plate (102 e) and a first spring (102 d), one end of the first spring (102 d) is fixed on the inner side of the fixing box (102 a), the annular plate (102 e) is arranged in the fixing box (102 a), the rubber pad (102 b) is glued on the annular plate (102 e), and the fixing box (102 a) is arranged at the top of the moving piece (101).

4. An accumulator package having a pressure warning function as claimed in claim 3, characterized in that: the fixing piece (102) further comprises a fixing ring (102 c), a second spring (102 f) and a fixing seat (102 g), wherein the fixing seat (102 g) is fixed at the bottom of the fixing box (102 a), the second spring (102 f) is arranged on the fixing seat (102 g), and the fixing ring (102 c) is fixed at one end of the second spring (102 f).

5. The accumulator pack with pressure warning function according to claim 4, characterized in that: the storage piece (201) comprises an air charging tank (201 a), a piston (201 b), a shell (201 c), a buffer plate (201 d), a third spring (201 e) and a circular plate (201 f), wherein the third spring (201 e) is arranged between the buffer plate (201 d) and the circular plate (201 f), the circular plate (201 f) and the buffer plate (201 d) are both arranged in the shell (201 c), the piston (201 b) is arranged in the air charging tank (201 a), and the air charging tank (201 a) is arranged in the shell (201 c).

6. The accumulator pack with pressure warning function according to claim 5, characterized in that: the storage piece (201) further comprises a circular tube (201 g), a connecting ring (201 h), a first sealing plug (201 i) and a connecting tube (201 j), wherein the connecting tube (201 j) is communicated with one end of the shell (201 c), the first sealing plug (201 i) is arranged in one end of the connecting ring (201 h), and the circular tube (201 g) is arranged at one end of the shell (201 c).

7. The accumulator pack with pressure warning function according to claim 6, characterized in that: the alarm piece (202) comprises a pressure gauge (202 a), a magnetic sensor (202 b), magnetic steel (202 c), an alarm lamp (202 d) and a fixed plate (202 e), wherein the fixed plate (202 e) is fixed in one end of the shell (201 c), the alarm lamp (202 d) is fixed on one end of the magnetic sensor (202 b), the magnetic steel (202 c) is fixed on the fixed plate (202 e), the magnetic sensor (202 b) is attached to the outer side of the magnetic steel (202 c), and the pressure gauge (202 a) is arranged on one end of the magnetic sensor (202 b).

8. The accumulator package having a pressure warning function according to claim 7, characterized in that: the inflatable part (203) comprises an interface tube (203 a), a vent tube (203 b), a second sealing plug (203 c) and an inflation tube (203 d), wherein the inflation tube (203 d) is communicated with the inflation tank (201 a), the second sealing plug (203 c) is plugged at one end of the vent tube (203 b), the vent tube (203 b) is communicated with the other end of the shell (201 c), and the interface tube (203 a) is arranged at the other end of the vent tube (203 b).

9. The accumulator set with pressure alarm function according to claim 8, characterized in that: the pressure relief piece (301) comprises a pressure relief pipe (301 a), a fixing frame (301 b), a pressure relief box (301 c), a pressure relief cavity (301 d), a conveying cavity (301 e) and a first rubber plug (301 f), wherein the first rubber plug (301 f) is fixed on the top of the pressure relief box (301 c), the conveying cavity (301 e) is communicated with the pressure relief box (301 c), the pressure relief cavity (301 d) is arranged in the pressure relief box (301 c), the pressure relief box (301 c) is arranged on the fixing frame (301 b), one end of the fixing frame (301 b) is fixed on the shell (201 c), and the pressure relief pipe (301 a) is communicated with the air charging tank (201 a).

10. The accumulator set with pressure alarm function according to claim 9, characterized in that: the rotary part (302) comprises a fixed shell (302 a), a valve (302 b), a second rubber plug (302 c), a threaded rod (302 d), a driving rod (302 e), a fourth spring (302 f) and a fixed block (302 g), wherein the fixed block (302 g) is fixed on one end of the driving rod (302 e), the fourth spring (302 f) is sleeved on the driving rod (302 e), one end of the threaded rod (302 d) is welded on the other end of the driving rod (302 e), the second rubber plug (302 c) is arranged on one end of the fixed shell (302 a), the valve (302 b) is in threaded connection with the other end of the threaded rod (302 d), and one end of the fixed shell (302 a) is fixedly connected to the bottom of the pressure relief box (301 c).