CN114776623A

CN114776623A - Anti-surge valve feedback device with low failure times

Info

Publication number: CN114776623A
Application number: CN202210506983.0A
Authority: CN
Inventors: 郑华平; 曾艳君
Original assignee: Zhejiang Zheneng Zhenhai Gas Thermal Power Co ltd
Current assignee: Zhejiang Zheneng Zhenhai Gas Thermal Power Co ltd
Priority date: 2022-05-11
Filing date: 2022-05-11
Publication date: 2022-07-22

Abstract

The invention relates to the technical field of gas turbines, in particular to an anti-surge valve feedback device with low failure frequency, which comprises a junction box and an anti-surge valve, wherein a junction base is arranged in the junction box, a junction port is formed in the top of the junction box, a multi-component flow port is formed in the bottom of the junction box, a box door which is convenient to open and has high sealing performance is arranged on the front of the junction box, heat preservation boxes with heat preservation and insulation effects are arranged on the left side and the right side of the junction box, a contact gasket is arranged on the front of the anti-surge valve, a plurality of groups of high-stability contacts are arranged on the front of the contact gasket, a heat insulation pad is arranged on the inner side of the box door, and limiting blocks are arranged on the inner side of the box door and at the corners of the heat insulation pad Stability and practicality.

Description

Anti-surge valve feedback device with low failure times

Technical Field

The invention relates to the technical field of gas turbines, in particular to an anti-surge valve feedback device with low failure frequency.

Background

The thermoelectric gas turbine adopts an axial-flow compressor to suck air from the outside and pressurize the air, simultaneously the air temperature is correspondingly raised, the air pumped to a combustion chamber is mixed and combusted with the treated natural gas sprayed by a fuel nozzle to generate high-temperature and high-pressure gas which enters the turbine to do work, the compressor cannot stably work when the volume flow of the air entering the compressor is reduced to a certain value during the starting and stopping processes of the gas turbine, at the moment, the air in the compressor can strongly pulsate, the pressure ratio can also fluctuate up and down along with the air, so that the compressor can generate more severe vibration, and the phenomenon is surging;

in order to prevent surge, the surge-proof valve can be used for processing the surge-proof valve, but the existing surge-proof valve is too simple in design structure, the switch contact is fixed and is not firm enough, the phenomenon of loosening and falling off easily occurs during use, the normal use of the surge-proof valve is influenced, meanwhile, the existing surge-proof valve is mostly designed in a single-contact structure, faults easily occur during use, the surge-proof effect is poor, meanwhile, the existing junction box is too simple in design structure, the junction box is not provided with a heat insulation structure, the junction box cannot be well used during use, the fault rate is high, the overall use stability, the convenience and the practicability are not high generally, therefore, the novel surge-proof valve feedback device with low fault frequency is designed for improving the existing surge-proof valve feedback device, so that the technical defects are changed, and the practicability of the overall surge-proof valve feedback device is improved, which is particularly important.

Disclosure of Invention

The object of the present invention is to provide a feedback device of anti-surge valve with low failure frequency to solve the problems mentioned in the background art.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides a valve feedback device prevents breathing heavily that trouble number of times is low, includes junction box and prevents breathing heavily the valve, the inside of junction box is provided with the connection terminal, the top of junction box is provided with the mouth that converges, the bottom of junction box is provided with multicomponent and flows the mouth, the front of junction box is provided with conveniently opens and the higher chamber door of leakproofness, the left and right sides of junction box all is provided with the heat preservation box that has the thermal-insulated effect of heat preservation, the front of preventing breathing heavily the valve is provided with the contact gasket, the front of contact gasket is provided with the contact of multiunit high stability, the inboard of chamber door is provided with the heat insulating mattress, the inboard of chamber door and the corner that is located the heat insulating mattress all are provided with the stopper.

The beneficial effects of the invention are: through the design of junction box and chamber door, the chamber door can carry out quick block with the junction box through the buckle, utilize the hasp to carry out quick locking simultaneously, the fixed knob of hasp will fix the ear and carry out the high-speed joint with the regulation ear fixed, during chamber door and junction box are closed, inlay to the inside of seal groove in the seal ring, play fine sealed effect, the inside of junction box is infiltrated in to the effectual external moisture of avoiding simultaneously, the safety in utilization of junction box has been ensured, the closed leakproofness and the stability of chamber door have been increased, the regulating mode is simple and convenient simultaneously, it is all very convenient to open and close to the chamber door.

In addition, the upper and lower both sides that junction box and chamber door opened and shut the department all are provided with the buckle, two be provided with the hasp between the buckle, the hasp includes fixed ear, regulation ear and fixed knob, fixed ear is located the positive right side of junction box, the right side of chamber door and the position department of corresponding fixed ear are provided with the regulation ear, the inside of adjusting the ear is provided with fixed knob, the front of junction box is provided with the sealing ring, the seal groove has been seted up to the inboard of chamber door and the position department of corresponding sealing ring.

Secondly, the inside of heat preservation box is provided with the heat preservation asbestos, the supporting lid that is provided with of heat preservation box, the lid is provided with the department that opens and shuts with the heat preservation box and buckles, the knot that opens and shuts is including fixed hook, fixing base, linking arm, adjusting spring, the lantern ring and adjusting plate, the fixed hook is located the outside of heat preservation box, the outside of lid and the position department of corresponding fixed hook are provided with the fixing base, the upper and lower both sides that the fixing base is close to fixed hook one end all are provided with the linking arm, the lantern ring has been cup jointed to the inboard of fixed hook, the lantern ring sets up with the linking arm is corresponding, just adjusting spring has all been cup jointed in the outside of lantern ring and linking arm, the one end that the fixed hook was kept away from to the lantern ring is provided with adjusting plate.

Furthermore, the front of the contact gasket is provided with a movable groove corresponding to the position of the contact, the center of the contact is provided with a fixed column, the fixed column penetrates through the movable groove and extends to the back of the contact gasket to be provided with a chuck, and a washer and a plum blossom gasket are sequentially sleeved between the chuck and the contact and positioned on the outer side of the fixed column.

Furthermore, the back of the junction box is provided with a mounting seat, the front of the mounting seat is provided with a fixing hole, and the junction box is connected with the box door through a hinge.

Further, the buckle is integral type structural design with the chamber door, the right side of junction box and the position department of corresponding buckle are provided with the draw-in groove, fixed ear is integral type structural design with the junction box, it is integral type structural design to adjust the ear and the chamber door, fixed knob is threaded connection with the connected mode of adjusting the ear and fixed ear, the sealing ring is integral type structural design with the junction box, just the external structure size of sealing ring sets up with the internal structure size of seal groove is corresponding.

Furthermore, the connection mode of lid and heat preservation box is hinge connection, the corresponding setting of the inner structure size of heat preservation box and the external structure size of heat preservation asbestos, the outside of lid is provided with the handle, the handle is foldable structural design.

Furthermore, the adjusting pressure plate and the lantern ring are designed into an integral structure, and the front surface of the adjusting pressure plate is provided with an anti-slip strip.

Furthermore, the size of the internal structure of the movable groove corresponds to the size of the external structure of the fixed column, the fixed column and the chuck are in an integrated structural design, the size of the external structure of the fixed column corresponds to the size of the internal structure of the gasket and the size of the internal structure of the quincuncial gasket, and the fixed column is in threaded connection with the contact.

Furthermore, the heat insulation pad is made of heat insulation materials, the size of the inner structure of the limiting block corresponds to the size of the outer structure of the heat insulation pad, and a plurality of fine particles are arranged on the inner side of the limiting block.

In the invention, through the design of the heat preservation box and the heat insulation pad, the heat preservation asbestos is arranged in the heat preservation box, the whole junction box can be preserved, the fault rate in the junction box is effectively reduced, the use of the junction box is more stable, the heat preservation box and the box cover can be quickly opened and closed through the opening and closing buckle, the sealing tightness of the box cover is higher during fixing, when the heat preservation box is opened, only the adjusting pressure plate needs to be pressed to drive the adjusting spring to contract, the lantern ring is separated from the fixing hook, the opening and closing buckle is quickly opened, the opening and closing mode is simple and convenient, the heat preservation asbestos in the heat preservation box is convenient to quickly replace, the convenience of an operator is improved, the constant temperature of the junction box can be effectively increased by combining the heat insulation pad, the heat insulation pad is embedded into the inner side of the limiting block, the heat insulation pad is convenient to quickly detach and replace, and meanwhile, the installation stability of the heat insulation pad is increased by fine particles on the inner side of the limiting block, the constant temperature effect of junction box obtains promoting, has reduced the fault rate of junction box by a wide margin, and it is higher to change convenience and practicality.

According to the anti-surge valve, the fault rate of the anti-surge valve is greatly reduced through the design of the contact gasket and the contacts and the design of multiple contacts, meanwhile, the contacts are fixed with the fixed column and the chuck plate through the gasket and the quincuncial gasket, the fixing firmness of the contacts is greatly improved through the gasket and the quincuncial gasket, the contacts cannot be loosened in the long-time use process, the fault rate of the anti-surge valve is greatly reduced, and the stability and the practicability are high.

Drawings

FIG. 1 is a schematic perspective view of a junction box according to the present invention;

FIG. 2 is a schematic view of the inner side structure of the limiting block of the present invention;

FIG. 3 is a schematic view of the internal structure of the thermal insulation box according to the present invention;

FIG. 4 is a schematic view of a three-dimensional structure of the opening/closing buckle of the present invention;

FIG. 5 is a perspective view of the anti-surge valve of the present invention;

FIG. 6 is a perspective view of a contact pad according to the present invention;

fig. 7 is a schematic view of the contact mounting explosion structure of the present invention.

In the figure: 1-junction box, 101-mounting seat, 102-fixed hole, 103-hinge, 2-anti-surge valve, 3-junction seat, 4-junction port, 5-shunt port, 6-box door, 601-buckle, 6011-clamping groove, 602-lock catch, 6021-fixed lug, 6022-adjusting lug, 6023-fixed knob, 603-sealing ring, 604-sealing groove, 7-heat preservation box, 701-heat preservation asbestos, 702-box cover, 7021-handle, 703-opening and closing buckle, 7031-fixed hook, 7032-fixed seat, 7033-connecting arm, 7034-adjusting spring, 7035-lantern ring, 7036-adjusting pressing plate, 70361-anti-slip strip, 8-contact gasket, 801-movable groove, 9-contact, 901-fixed column, 902-chuck, 903-gasket, 904-quincuncial gasket, 10-heat insulation pad and 11-limiting block.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments, and based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.

While several embodiments of the present invention will be described below in order to facilitate an understanding of the invention, with reference to the related description, the invention may be embodied in many different forms and is not limited to the embodiments described herein, but rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present, that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present, and that the terms "vertical", "horizontal", "left", "right" and the like are used herein for descriptive purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, and the terms used herein in the specification of the present invention are for the purpose of describing particular embodiments only and are not intended to limit the present invention, and the term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Example 1

Referring to fig. 1 to 7, an anti-surge valve feedback device with low failure frequency provided in embodiment 1 of the present invention includes a connection box 1 and an anti-surge valve 2, a connection base 3 is disposed inside the connection box 1, a junction port 4 is disposed at the top of the connection box 1, a multi-component flow port 5 is disposed at the bottom of the connection box 1, a box door 6 with high sealing performance and convenient to open is disposed on the front of the connection box 1, heat preservation boxes 7 with heat preservation and insulation effects are disposed on both left and right sides of the connection box 1, a contact gasket 8 is disposed on the front of the anti-surge valve 2, a plurality of sets of high stability contacts 9 are disposed on the front of the contact gasket 8, a heat insulation pad 10 is disposed on the inner side of the box door 6, a limit block 11 is disposed on the inner side of the box door 6 and at a corner of the heat insulation pad 10, the heat insulation pad 10 is made of a heat insulation material, the size of the internal structure of the limit block 11 corresponds to the size of the external structure of the heat insulation pad 10, and the inner side of the limiting block 11 is provided with a plurality of fine particles.

Through junction box 1 and the design of chamber door 6, chamber door 6 can carry out quick block with junction box 1 through buckle 601, utilize hasp 602 to carry out quick locking simultaneously, the fixed knob 6023 of hasp 602 carries out the high-speed joint with fixed ear 6021 and regulation ear 6022 fixed, during chamber door 6 and junction box 1 are closed, the embedded inside to seal groove 604 of sealing ring 603, play fine sealed effect, simultaneously effectual infiltration moisture of avoiding the external world to junction box 1's inside, junction box 1's safety in utilization has been ensured, the closure tightness and the stability of chamber door 6 have been increased, the while regulation mode is simple and convenient, it is all very convenient to opening and closing of chamber door 6.

In order to solve the problem of opening and closing the box door 6, the upper side and the lower side of the opening and closing position of the connection box 1 and the box door 6 are both provided with a buckle 601, a buckle 602 is arranged between the two buckles 601, the buckle 602 comprises a fixing ear 6021, an adjusting ear 6022 and a fixing knob 6023, the fixing ear 6021 is positioned at the right side of the front side of the connection box 1, the adjusting ear 6022 is arranged at the right side of the box door 6 and at the position corresponding to the fixing ear 6021, the fixing knob 6023 is arranged inside the adjusting ear 6022, the front side of the connection box 1 is provided with a sealing ring 603, a sealing groove 604 is arranged at the inner side of the box door 6 and at the position corresponding to the sealing ring 603, the back of the connection box 1 is provided with a mounting seat 101, the front side of the mounting seat 101 is provided with a fixing hole 102, the connection box 1 is connected with the box door 6 through a hinge 103, the buckle 601 and the box door 6 are structurally designed, a clamping groove 6011 is arranged at the right side of the connection box door 1 and at the position corresponding to the buckle 601, the fixing lugs 6021 and the junction box 1 are in an integrated structure design, the adjusting lugs 6022 and the box door 6 are in an integrated structure design, the fixing knobs 6023 are in threaded connection with the adjusting lugs 6022 and the fixing lugs 6021, the sealing ring 603 and the junction box 1 are in an integrated structure design, and the external structure size of the sealing ring 603 and the internal structure size of the sealing groove 604 are correspondingly arranged.

In order to solve the constant temperature problem of the wire box 1, the heat preservation asbestos 701 is arranged inside the heat preservation box 7, the box cover 702 is arranged in a matching way with the heat preservation box 7, the opening and closing position of the box cover 702 and the heat preservation box 7 is provided with an opening and closing button 703, the opening and closing button 703 comprises a fixed hook 7031, a fixed seat 7032, a connecting arm 7033, an adjusting spring 7034, a lantern ring 7035 and an adjusting pressure plate 7036, the fixed hook 7031 is positioned on the outer side of the heat preservation box 7, the fixed seat 7032 is arranged on the outer side of the box cover 702 and the position corresponding to the fixed hook 7031, the connecting arms 7033 are arranged on the upper side and the lower side of the fixed seat 7032 close to one end of the fixed hook 7031, the lantern ring 7035 is sleeved on the inner side of the fixed hook 7031, the lantern ring 7032 is arranged corresponding to the connecting arm 7033, the adjusting spring 7034 is sleeved on the outer sides of the lantern ring 7032 and the connecting arm 7031, the adjusting pressure plate 7036 is arranged on one end of the lantern ring 7032 far away from the fixed hook 7031, the box cover 702 is connected with the heat preservation box 7 in a hinge way, the inner structure size of the heat preservation box 7 is arranged corresponding to the outer structure size of the heat preservation box 701, the outer side of the box cover 702 is provided with a handle 7021, the handle 7021 is of a folding structure design, the connecting arm 7033 and the lantern ring 7035 are both provided with a limiting block corresponding to the adjusting spring 7034, the adjusting pressure plate 7036 and the lantern ring 7035 are of an integrated structure design, and the front side of the adjusting pressure plate 7036 is provided with an anti-slip strip 70361.

In order to solve the problems of installation firmness and stability of the contact pad 8, a movable groove 801 is formed in the position, corresponding to the contact 9, of the front face of the contact pad 8, a fixed column 901 is arranged in the center of the contact 9, the fixed column 901 penetrates through the movable groove 801 and extends to the back of the contact pad 8 to be provided with a chuck 902, a gasket 903 and a plum blossom-shaped pad 904 are sequentially sleeved between the chuck 902 and the contact 9 and located on the outer side of the fixed column 901, the size of the inner structure of the movable groove 801 corresponds to the size of the outer structure of the fixed column 901, the fixed column 901 and the chuck 902 are in an integrated structural design, the size of the outer structure of the fixed column 901 corresponds to the sizes of the inner structures of the gasket 903 and the plum blossom-shaped pad 904, and the fixed column 901 and the contact 9 are connected in a threaded manner.

It can be understood that, in this embodiment 1, please refer to fig. 1-2, when the anti-surge valve feedback device with low failure frequency is used, the box door 6 is clamped with the junction box 1 through the buckle 601, the fixing knob 6023 is in threaded connection with the fixing ear 6021 and the adjusting ear 6022, so that the box door 6 is fixed with the junction box 1 by the fixing ear 6021 and the adjusting ear 6022, when the box door 6 needs to be opened, the fixing knob 6023 is screwed out to separate the fixing ear 6021 from the adjusting ear 6022, and then the buckle 601 is pulled off from the box to separate the buckle 601 from the slot 6011, so that the box door 6 can be opened quickly, the opening manner is simple and convenient, during the closing of the box door 6 and the junction box 1, the sealing ring 603 is embedded into the sealing groove 604 to play a good sealing role, and meanwhile, external moisture is effectively prevented from permeating into the interior of the junction box 1, so as to ensure the safety of the junction box 1, meanwhile, the box door 6 and the junction box 1 are high in stability and sealing performance when being closed, and the inside of the junction box 1 is well protected.

It can be understood that, referring to fig. 1-4, when the anti-surge valve feedback device with low failure frequency is used, the heat preservation asbestos 701 in the heat preservation box 7 can preserve heat in the connection box 1, so as to effectively ensure that the interior of the connection box 1 is kept at a constant temperature, so that the connection box 1 does not fail during use, the failure rate of the connection box 1 is greatly reduced, when the heat preservation asbestos 701 needs to be replaced in a long-time use process, only the adjusting pressing plate 7036 needs to be pressed, the anti-slip strip 70361 of the adjusting pressing plate 7036 increases the use stability of the adjusting pressing plate 7036, the adjusting pressing plate 7036 drives the adjusting spring 7034 to contract when being pressed, at the moment, the lantern ring 7035 is separated from the fixing hook 7031, the box cover 702 can be unlocked, the box cover 702 can be opened immediately, and then the heat preservation asbestos 701 in the heat preservation box 7 can be taken out for replacement, the fixed mode that opens and shuts of knot 703 is simple convenient, be convenient for carry out quick replacement to inside heat preservation asbestos 701 when having increased heat preservation box 7 and using the leakproofness, the operation is convenient and fast very, combine heat insulating mattress 10 can effectual increase junction box 1's constant temperature nature, heat insulating mattress 10 is embedded to stopper 11's inboard, be convenient for dismantle the change fast to heat insulating mattress 10, stopper 11 inboard tiny granule has increased heat insulating mattress 10's installation stability simultaneously, whole convenience and practicality are higher.

As can be appreciated, referring to fig. 5 to 7, when the anti-surge valve feedback device with low failure frequency is used, the contacts 9 are provided with a plurality of sets, the failure rate of the anti-surge valve 2 is greatly reduced during the use of the anti-surge valve 2, meanwhile, the contacts 9 are connected with the fixed column 901 through the gasket 903 and the quincunx gasket 904, and are clamped and installed on the front surface of the contact gasket 8 in combination with the chuck 902, the installation firmness and stability of the contacts 9 are greatly improved by the gasket 903 and the quincunx gasket 904, the failure rate of the anti-surge valve 2 is reduced again, and the use stability and the practicability are higher.

The working process of the invention is as follows: when the anti-surge valve feedback device with low failure frequency is used, the junction box 1 is fixedly installed at a specified position through the fixing hole 102 of the installation seat 101, then the anti-surge valve 2 is installed at the specified position, then the anti-surge valve 2 is connected with the junction box 1 through the connecting wire, the junction port 4 and the shunt port 5 of the junction box 1 can communicate the connecting wire, the box door 6 is clamped with the junction box 1 through the buckle 601, the fixing knob 6023 is in threaded connection with the fixing lug 6021 and the adjusting lug 6022, so that the box door 6 and the junction box 1 are fixed through the fixing lug 6021 and the adjusting lug 6022, when the box door 6 needs to be opened, the fixing knob 6023 is screwed out to separate the fixing lug 6021 from the adjusting lug 6022, then the buckle 601 is pulled off from the box to separate the buckle 601 from the clamping groove 6011, and then the box door 6 can be quickly opened, the opening mode is simple and convenient, and during the closing of the box door 6 and the junction box 1, the sealing ring 603 is embedded into the sealing groove 604 to play a good sealing role, and simultaneously, external moisture is effectively prevented from permeating into the inside of the junction box 1, so that the use safety of the junction box 1 is ensured, and meanwhile, the stability and the sealing performance are higher when the box door 6 and the junction box 1 are sealed, so that the inside of the junction box 1 is well protected, the heat-preservation asbestos 701 in the heat-preservation box 7 can preserve the heat of the inside of the junction box 1, so that the inside of the junction box 1 is effectively ensured to be kept at a constant temperature, so that the junction box 1 cannot break down during use, the use failure rate of the junction box 1 is greatly reduced, when the heat-preservation asbestos 701 needs to be replaced in a long-time use process, only the adjusting pressing plate 7036 needs to be pressed, the anti-slip strips 70361 of the adjusting pressing plate 7036 increase the use stability of the adjusting pressing plate 7036, and the adjusting pressing plate 7036 can drive the adjusting spring 7034 to contract when pressed, at the moment, the lantern ring 7035 is separated from the fixed hook 7031, the box cover 702 can be unlocked, the box cover 702 can be opened immediately, then the heat preservation asbestos 701 in the heat preservation box 7 can be taken out and replaced, the opening and closing fixing mode of the opening and closing buckle 703 is simple and convenient, the use tightness of the heat preservation box 7 is improved, meanwhile, the internal heat preservation asbestos 701 can be replaced quickly, the constant temperature of the junction box 1 can be effectively improved by combining the heat insulation pad 10, the heat insulation pad 10 is embedded into the inner side of the limiting block 11, the heat insulation pad 10 is convenient to detach and replace quickly, meanwhile, fine particles on the inner side of the limiting block 11 increase the installation stability of the heat insulation pad 10, a plurality of groups of contacts 9 of the anti-surge valve 2 are arranged, the fault rate of the anti-surge valve 2 is greatly reduced during the use of the anti-surge valve 2, meanwhile, the contacts 9 are connected with the fixed column through the gasket 903 and the quincunx gasket 904, and are clamped on the front face of the contact gasket 901 by combining the chuck 902, the gasket 903 and the quincuncial gasket 904 greatly increase the installation firmness and stability of the contact 9, the failure rate of the anti-surge valve 2 is reduced, the whole operation process is simple and convenient, and compared with the existing anti-surge valve feedback device, the anti-surge valve feedback device can improve the overall convenience, stability and practicability of the anti-surge valve feedback device through design.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a prevent breathing heavily valve feedback device that trouble number of times is low, includes junction box (1) and prevents breathing heavily valve (2), its characterized in that: the inside of junction box (1) is provided with connection terminal (3), the top of junction box (1) is provided with confluent mouth (4), the bottom of junction box (1) is provided with multicomponent runner hole (5), the front of junction box (1) is provided with conveniently opens and higher chamber door (6) of leakproofness, the left and right sides of junction box (1) all is provided with heat preservation box (7) that have the thermal-insulated effect of heat preservation, the front of antiasthmatic valve (2) is provided with contact gasket (8), the front of contact gasket (8) is provided with contact (9) of multiunit high stability, the inboard of chamber door (6) is provided with heat insulating mattress (10), the inboard of chamber door (6) and the corner that is located heat insulating mattress (10) all are provided with stopper (11).

2. The anti-surge valve feedback device with a low number of failures according to claim 1, wherein: buckle (601) are arranged on the upper side and the lower side of the opening and closing position of junction box (1) and box door (6), two buckle (602) are arranged between buckles (601), buckle (602) comprises fixing lugs (6021), adjusting lugs (6022) and fixing knobs (6023), fixing lugs (6021) are located on the right side of the front of junction box (1), adjusting lugs (6022) are arranged on the right side of box door (6) and correspond to the fixing lugs (6021), fixing knobs (6023) are arranged inside adjusting lugs (6022), sealing rings (603) are arranged on the front of junction box (1), and sealing grooves (604) are formed in the inner side of box door (6) and the position of corresponding sealing rings (603).

3. The anti-surge valve feedback device with a low number of failures according to claim 1, wherein: the heat preservation box is characterized in that heat preservation asbestos (701) is arranged inside the heat preservation box (7), a box cover (702) is arranged in a matched mode on the heat preservation box (7), an opening and closing buckle (703) is arranged at the opening and closing position of the box cover (702) and the heat preservation box (7), the opening and closing buckle (703) comprises a fixed hook (7031), a fixed seat (7032), a connecting arm (7033), an adjusting spring (7034), a lantern ring (7035) and an adjusting pressing plate (7036), the fixed hook (7031) is located on the outer side of the heat preservation box (7), a fixed seat (7032) is arranged on the outer side of the box cover (702) and in the position corresponding to the fixed hook (7031), the connecting arm (7033) is arranged on the upper side and the lower side of one end, close to the fixed hook (7031), of the fixed hook (7031), the lantern ring (7035) is sleeved on the inner side of the fixed hook (7031), the lantern ring (7032) and the connecting arm (7033) are arranged correspondingly, the adjusting spring (7034) is sleeved on the outer sides of the lantern ring (7032) and the connecting arm (7033), one end of the lantern ring (7032) far away from the fixing hook (7031) is provided with an adjusting pressure plate (7036).

4. A low failure number surge-proof valve feedback device as claimed in claim 1, wherein: the contact structure is characterized in that a movable groove (801) is formed in the position, corresponding to the contact (9), of the front face of the contact gasket (8), a fixed column (901) is arranged in the center of the contact (9), the fixed column (901) penetrates through the movable groove (801) and extends to the back of the contact gasket (8) to be provided with a chuck (902), and a gasket (903) and a quincuncial gasket (904) are sequentially sleeved on the outer side, located on the fixed column (901), between the chuck (902) and the contact (9).

5. The anti-surge valve feedback device with a low number of failures according to claim 1, wherein: the back of the junction box (1) is provided with a mounting seat (101), the front of the mounting seat (101) is provided with a fixing hole (102), and the junction box (1) is connected with a box door (6) through a hinge (103).

6. The anti-surge valve feedback device with a low number of failures according to claim 2, wherein: buckle (601) are integral type structural design with chamber door (6), the right side of junction box (1) and the position department of corresponding buckle (601) are provided with draw-in groove (6011), fixed ear (6021) is integral type structural design with junction box (1), adjust ear (6022) and chamber door (6) and be integral type structural design, fixed knob (6023) is threaded connection with the connected mode of adjusting ear (6022) and fixed ear (6021), sealing ring (603) is integral type structural design with junction box (1), just the external structure size of sealing ring (603) sets up with the corresponding inner structure size of seal groove (604) size.

7. A low failure number surge-proof valve feedback device according to claim 3, wherein: the connection mode of lid (702) and heat preservation box (7) is hinge connection, the corresponding setting of the exterior structure size of the internal structure size of heat preservation box (7) and heat preservation asbestos (701), the outside of lid (702) is provided with handle (7021), handle (7021) are foldable structural design.

8. A low failure number anti-surge valve feedback apparatus according to claim 3, wherein: the adjusting spring (7034) is provided with a limiting block corresponding to the connecting arm (7033) and the lantern ring (7035), the adjusting pressing plate (7036) and the lantern ring (7035) are designed into an integral structure, and the front face of the adjusting pressing plate (7036) is provided with an anti-slip strip (70361).

9. The anti-surge valve feedback device with a low number of failures according to claim 4, wherein: the size of the internal structure of the movable groove (801) corresponds to that of the external structure of the fixed column (901), the fixed column (901) and the chuck (902) are designed into an integrated structure, the size of the external structure of the fixed column (901) corresponds to that of the internal structures of the washer (903) and the quincuncial gasket (904), and the fixed column (901) is connected with the contact (9) in a threaded mode.

10. The anti-surge valve feedback device with a low number of failures according to claim 1, wherein: the heat insulation pad (10) is made of heat insulation materials, the internal structure size of the limiting block (11) is arranged corresponding to the external structure size of the heat insulation pad (10), and a plurality of fine particles are arranged on the inner side of the limiting block (11).