CN113251184A - Protective device - Google Patents

Protective device Download PDF

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Publication number
CN113251184A
CN113251184A CN202110518113.0A CN202110518113A CN113251184A CN 113251184 A CN113251184 A CN 113251184A CN 202110518113 A CN202110518113 A CN 202110518113A CN 113251184 A CN113251184 A CN 113251184A
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CN
China
Prior art keywords
piston
outer cylinder
elastomer
spacer
elastic body
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202110518113.0A
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Chinese (zh)
Other versions
CN113251184B (en
Inventor
龚演平
汪东
傅龙伟
张斌斌
曾小忠
陈正龙
陈慧聪
张焕燊
鄢雨候
刘晓洲
李佳奇
温云
卢紫薇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Power Grid Co Ltd
Huizhou Power Supply Bureau of Guangdong Power Grid Co Ltd
Original Assignee
Guangdong Power Grid Co Ltd
Huizhou Power Supply Bureau of Guangdong Power Grid Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Guangdong Power Grid Co Ltd, Huizhou Power Supply Bureau of Guangdong Power Grid Co Ltd filed Critical Guangdong Power Grid Co Ltd
Priority to CN202110518113.0A priority Critical patent/CN113251184B/en
Publication of CN113251184A publication Critical patent/CN113251184A/en
Application granted granted Critical
Publication of CN113251184B publication Critical patent/CN113251184B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
    • F16K17/048—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded combined with other safety valves, or with pressure control devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/14—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side with fracturing member
    • F16K17/16—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side with fracturing member with fracturing diaphragm ; Rupture discs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/164—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side and remaining closed after return of the normal pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Actuator (AREA)

Abstract

The invention relates to the technical field of electric power, in particular to a protective device which comprises an outer barrel and a sealing assembly, wherein one end of the outer barrel is provided with an air discharging part, the air discharging part is used for air discharging operation, and the other end of the outer barrel is detachably connected with a spacer; seal assembly includes piston and elastomer, and the elastomer sets up in the urceolus, and the one end of elastomer is connected in the one end of urceolus towards the spacer, and the other end of elastomer extends towards gassing portion, and the head of piston sets up in the other end of elastomer, can shutoff gassing portion, and the elastomer is passed to the one end that the piston deviates from the head, can wear to break the spacer. According to the invention, the outer barrel is arranged on the pressure relief hole of the equipment to be protected, and the spacer on the outer barrel can prevent water vapor from entering the outer barrel, so that the sealing property of the equipment to be protected during operation is ensured; based on the setting of urceolus and seal assembly, control the motion of elastomer and piston through the gas pressure difference to the gas pressure that makes in treating the protection equipment remains certain intensity, thereby satisfies the insulating requirement, effectively reduces the power failure scope.

Description

Protective device
Technical Field
The invention relates to the technical field of electric power, in particular to a protection device.
Background
GIS (GAS INSULATED SWITCHGEAR) is internally filled with SF6The (sulfur hexafluoride) gas can cause the pressure in the gas chamber to rise when serious faults occur in the gas chamber, in order to prevent equipment from deforming or even exploding due to overhigh pressure in the gas chamber, the equipment gas chamber is generally provided with a pressure relief hole, and the pressure relief hole is sealed by an explosion-proof film under normal conditions, namely a metal sheet with a certain thickness is sealed; when the pressure inside the gas chamber exceeds a certain threshold,the explosion-proof membrane is broken, and the gas in the gas chamber is released from the pressure relief hole, so that the effect of protecting the equipment from being damaged is achieved. When the rupture membrane broke, the air chamber was inside to communicate with each other with external atmosphere, and inside gas pressure value can drop to the same with outside pressure value, and at this moment, the air chamber is inside to reach the dielectric strength of requirement, arouses easily that inside electrified conductor discharges to the air chamber inner wall to arouse the protection action, and then enlarge the power failure scope.
At present, no related protection device is provided for solving the problem that how to prevent the too low internal pressure drop of the gas chamber of the GIS equipment after the rupture of the rupture membrane so as to enlarge the power failure range. Therefore, need provide a protector to GIS equipment, install on the pressure release hole, when air chamber internal pressure sharply increases, the rupture membrane in the pressure release hole breaks, carries out pressure release, and when pressure dropped to a definite value, protector can close the pressure release hole to make air chamber internal pressure remain certain intensity, satisfy certain insulating requirement, reduce the power failure scope.
Disclosure of Invention
The invention aims to provide a protection device which can prevent the internal pressure of an air chamber of GIS equipment from being too low, ensure that the internal pressure of the air chamber can still keep certain strength after pressure relief operation, meet certain insulation requirements and reduce the power failure range.
In order to realize the purpose, the following technical scheme is provided:
a protective device, comprising:
the outer barrel is provided with an air discharging part at one end, the air discharging part is used for air discharging operation, and a spacer is detachably connected to the other end of the outer barrel;
the sealing assembly comprises a piston and an elastic body, the elastic body is arranged in the outer barrel, one end of the elastic body is connected to the outer barrel and faces towards one end of the spacer, the other end of the elastic body faces towards the air bleeding part and extends, the head of the piston is arranged at the other end of the elastic body and can be plugged into the air bleeding part, and one end of the piston, which deviates from the head, penetrates through the elastic body and can penetrate through the spacer.
Further, a piston rod is arranged on the piston, the piston rod penetrates through the elastic body along an axial direction parallel to the outer cylinder, one end of the piston rod is connected to the head of the piston, the other end of the piston rod penetrates through the elastic body, and the spacer can be broken through.
Further, the seal assembly further comprises a fixing piece, the fixing piece is arranged at one end, facing the spacer, of the outer barrel, one end of the elastic body is connected to the fixing piece, and the other end of the piston rod movably penetrates through the fixing piece.
Furthermore, the air release part is provided with an air release hole, the piston can block the air release hole, the rated air pressure value in the equipment to be protected is x, the elastic coefficient of the elastic body is k, the area of the air release hole is S, and k is larger than or equal to 1.1xS and smaller than or equal to 1.2 xS.
Further, the end face, facing the piston, of the air discharging portion is provided with a groove, the groove is arranged in a penetrating mode along the circumferential direction of the air discharging hole, and the head portion of the piston can abut against the groove.
Further, still include the connecting piece, the connecting piece is used for connecting the equipment of treating the protection, the urceolus one end can dismantle connect in the connecting piece.
Furthermore, a first internal thread is arranged on the connecting piece, a first connecting part is arranged at one end of the outer barrel, which faces the connecting piece, and the first connecting part is in threaded connection with the connecting piece.
Further, the outer barrel comprises a locking piece, the locking piece is detachably connected to the other end of the outer barrel, and the spacer is clamped between the outer barrel and the locking piece.
Further, the outer cylinder is provided with a second connecting portion towards one end of the locking piece, and the locking piece is detachably connected to the second connecting portion.
Further, a sealing member is provided on an end surface of the piston facing the air bleeding portion, the sealing member being capable of abutting against the air bleeding portion.
The invention has the beneficial effects that:
in the protection device, the outer cylinder is arranged on the pressure relief hole of the equipment to be protected, the spacer can prevent water vapor from entering the outer cylinder, the sealing performance of the equipment to be protected during operation is ensured, and the sealing assembly can be matched with the outer cylinder to control the amount of gas released out of the equipment to be protected through the gas release part. Specifically, under the cooperation of the elastic body, when the gas pressure in the air chamber of the equipment to be protected increases sharply, the explosion-proof membrane in the pressure relief hole is broken, the elastic body is compressed under the action of the difference between the gas pressure in the equipment to be protected and the gas pressure in the outer cylinder, the piston moves towards the direction far away from the gas release part, one end of the piston, which is far away from the head, penetrates through the spacer, the gas release part releases gas to the equipment to be protected, when the gas pressure in the air chamber of the equipment to be protected is reduced to a certain value, the elastic body rebounds under the action of the difference between the gas pressure, and the piston moves towards the direction close to the gas release part, so that the gas release part is blocked; based on urceolus and seal assembly's setting, come control piston motion through the gas pressure difference to make the inside gas pressure of air chamber remain certain intensity, thereby treat that protection equipment satisfies certain insulating requirement, effectively reduce the power failure scope.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a protection device according to an embodiment of the present invention;
fig. 2 is a schematic partial structural view of a protection device according to an embodiment of the present invention 1;
fig. 3 is a schematic partial structural view of a protection device according to an embodiment of the present invention 2;
FIG. 4 is a schematic structural diagram of a connector of a protection device according to an embodiment of the present invention;
fig. 5 is a schematic structural view of a locking member of a protection device according to an embodiment of the present invention;
FIG. 6 is a schematic view of a spacer of a protection device according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a sealing assembly of a protection device according to a second embodiment of the present invention.
In the figure:
1-outer cylinder; 11-a gas release part; 111-air bleed holes; 112-a groove; 12-a spacer; 13-a first connection; 131-a first external thread; 14-a second connection; 141-a second external thread;
2-a sealing assembly; 21-a piston; 211-a piston rod; 212-a seal; 22-an elastomer; 23-a fixing member; 231-a through hole; 232-a hollowed-out;
3-a connector; 31-a first internal thread;
4-a locking fastener; 41-second internal thread; 42-abutment.
Detailed Description
In order to make the technical solutions of the present invention better understood by those skilled in the art, the technical solutions of the present invention are further described below by way of specific embodiments with reference to the accompanying drawings.
In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships conventionally laid out when the product is used, and are only for convenience of description of the present invention, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", and the like are used for descriptive purposes only or to distinguish between different structures or components and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
The first embodiment is as follows:
referring to fig. 1 to 3, the embodiment provides a protection device, which comprises an outer cylinder 1 and a sealing assembly 2, wherein one end of the outer cylinder 1 is provided with an air discharging part 11, the air discharging part 11 is used for air discharging operation, and the other end of the outer cylinder 1 is detachably connected with a spacer 12; the sealing assembly 2 comprises a piston 21 and an elastic body 22, the elastic body 22 is arranged in the outer barrel 1, one end of the elastic body 22 is connected to one end, facing the partition 12, of the outer barrel 1, the other end of the elastic body 22 extends towards the air release part 11, the head of the piston 21 is arranged at the other end of the elastic body 22 and can block the air release part 11, one end, facing away from the head of the piston 21, of the piston 21 penetrates through the elastic body 22 and can break through the partition 12.
In the protection device of the embodiment, the outer cylinder 1 is installed on a pressure relief hole of a device to be protected, the spacer 12 is arranged to prevent water vapor from entering the outer cylinder 1, the sealing performance of the device to be protected during operation is ensured, and the sealing assembly 2 is arranged to cooperate with the outer cylinder 1 to control the amount of gas released out of the device to be protected through the gas release part 11; specifically, under the cooperation of the elastic body 22, when the gas pressure in the gas chamber of the equipment to be protected increases sharply, the rupture membrane on the pressure relief hole is broken, under the action of the difference between the gas pressure in the equipment to be protected and the gas pressure in the outer cylinder 1, the elastic body 22 is compressed, the piston 21 moves towards the direction far away from the gas release part 11, one end of the piston 21, which is far away from the head, breaks the partition 12, the gas release part 11 releases the gas to the equipment to be protected, when the gas pressure in the gas chamber of the equipment to be protected decreases to a certain value, under the action of the difference between the gas pressure, the elastic body 22 rebounds, and the piston 21 moves towards the direction close to the gas release part 11, so that the gas release part 11 is blocked; based on the setting of urceolus 1 and seal assembly 2, come control piston 21 motion through the gas pressure difference to make the inside gas pressure of gas chamber keep certain intensity, thereby wait that the protection equipment satisfies certain insulating requirement, effectively reduce the power failure scope.
In the present embodiment, referring to fig. 1 to 3, a piston rod 211 is disposed on the piston 21, the piston rod 211 is disposed on the elastic body 22 along an axial direction parallel to the outer cylinder 1, one end of the piston rod is connected to the head of the piston 21, and the other end of the piston rod passes through the elastic body 22. In the above arrangement, when the gas pressure inside the air chamber of the device to be protected increases sharply, the rupture disk ruptures, under the action of the gas pressure difference, the elastic body 22 is compressed, the piston 21 moves towards the direction away from the air discharge part 11, and then the piston rod 211 is driven to move, so that the other end of the piston rod 211 penetrates through the partition 12, and then the gas inside the air chamber of the device to be protected is discharged, thereby preventing the device from deforming or even exploding due to the overhigh pressure inside the air chamber, and ensuring the safe operation of the device to be protected.
In this embodiment, referring to fig. 2 and 3, the sealing assembly 2 further includes a fixing member 23, the fixing member 23 is disposed at an end of the outer cylinder 1 facing the diaphragm 12, an end of the elastic body 22 is fixedly connected to the fixing member 23, when the gas pressure inside the gas chamber of the device to be protected is increased sharply, the bursting disk is ruptured, the elastic body 22 is compressed under the action of the gas pressure difference, so that the end of the elastic body 22 connected to the piston 21 moves towards the fixing member 23, and the piston 21 is further driven to move. The other end of the piston rod 211 is movably arranged on the fixing piece 23 in a penetrating mode, when the elastic body 22 drives the piston 21 to move, the piston rod 211 can move back and forth on the fixing piece 23 along with the movement, and then when the fixing piece 23 moves towards the separation piece 12, the separation piece 12 is broken through, and gas in the outer barrel 1 is released.
Alternatively, referring to fig. 2, the fixing member 23 is in a shape of a circular disc, a through hole 231 is formed in the center, and the other end of the piston rod 211 passes through the through hole 231 and extends toward the spacer 12; the fixing part 23 is provided with a plurality of hollow parts 232 communicated with the outer barrel 1, the hollow parts 232 are arranged in a plurality of numbers, the hollow parts 232 are evenly arranged along the circumferential direction of the fixing part 23 at intervals, and gas in the outer barrel 1 can pass through the hollow parts 232 to be released.
In the present embodiment, referring to fig. 1 and 2, the air bleeding portion 11 is provided with an air bleeding hole 111, the air bleeding hole 111 is circular, the head of the piston 21 is circular, and the diameter of the air bleeding hole 111 is smaller than the diameter of the head of the piston 21. When the gas pressure in the gas chamber of the equipment to be protected is reduced to a certain value, the elastic body 22 rebounds under the action of the difference between the gas pressure in the air chamber of the equipment to be protected and the gas pressure in the outer barrel 1, the piston 21 moves towards the gas release part 11, and the head of the piston 21 can block the gas release hole 111, so that the gas pressure in the gas chamber keeps certain strength, the equipment to be protected meets certain insulation requirements, and the power failure range is effectively reduced.
Preferably, the rated air pressure value inside the device to be protected is set to be x, the elastic body 22 can be a spring, the elastic coefficient of the elastic body is k, the area of the air vent 111 is S, the elastic coefficient k of the elastic body 22 and the area S of the air vent 111 are set according to the rated air pressure value x inside the device to be protected, so that the elastic coefficient k of the elastic body 22 and the area S of the air vent 111 meet the requirement that k is larger than or equal to 1.1xS and smaller than or equal to 1.2xS, wherein the unit of the air pressure value is set to be Pa, the unit of the elastic coefficient k is N/mm, and the unit of the area S is square meter, and the setting can enable the air pressure inside the device to be protected to keep the required strength, so that the device to be protected meets the required insulation requirement.
Optionally, referring to fig. 2, a groove 112 is provided on an end surface of the air bleeding portion 11 facing the piston 21, the groove 112 is disposed to penetrate along a circumferential direction of the air bleeding hole 111, and a head portion of the piston 21 can be tightly clamped in the groove 112, so that good air tightness is ensured when the device to be protected is operated.
Alternatively, the air bleeding part 11 is disc-shaped, the outer circumferential surface of the air bleeding part 11 is connected to the inner wall of the outer cylinder 1, the air bleeding hole 111 is provided in the center of the air bleeding part 11, the plurality of grooves 112 are provided, and the plurality of grooves 112 are provided at intervals in the radial direction of the air bleeding part 11.
In this embodiment, refer to fig. 1 and 4, still include connecting piece 3, connecting piece 3 is used for connecting the equipment of treating the protection, and the one end of urceolus 1 can be dismantled and connect in connecting piece 3, through the setting of connecting piece 3, is convenient for install urceolus 1 on treating the protection equipment, and convenient operation is swift and with low costs.
Alternatively, referring to fig. 1 and 4, a first internal thread 31 is provided on the connecting member 3, a first connecting portion 13 is provided at an end of the outer barrel 1 facing the connecting member 3, a first external thread 131 is provided on the first connecting portion 13, and the first connecting portion 13 is screwed to the connecting member 3. The connecting piece 3 is connected to the outer barrel 1 in a threaded connection mode, so that the connecting strength can be guaranteed, and the installation operation of the outer barrel 1 is facilitated.
Referring to fig. 4, the connecting member 3 has a ring-shaped configuration, and the cross-sectional area of the connecting member 3 is gradually reduced in a direction from the connecting member 3 to the outer cylinder 1.
In the present embodiment, referring to fig. 1 and 5, a latch member 4 is further included, the latch member 4 is detachably connected to the other end of the outer cylinder 1, and the latch member 4 is configured to fix the spacer 12 to the outer cylinder 1, so that the spacer 12 is firmly sandwiched between the outer cylinder 1 and the latch member 4. When the spacer 12 needs to be replaced, the lock catch piece 4 can be detached from the outer cylinder 1 for replacement, and the operation is simple, convenient and trouble-saving.
Alternatively, referring to fig. 1 and 5, the end of the outer cylinder 1 facing the locking piece 4 is provided with a second connecting portion 14, the second connecting portion 14 is provided with a second external thread 141, the locking piece 4 is provided with a second internal thread 41, and the locking piece 4 is screwed to the second connecting portion 14. The lock catch piece 4 is connected to the outer barrel 1 in a threaded connection mode, so that the connection strength can be guaranteed, and the disassembly and replacement operations are convenient.
Referring to fig. 5, the locking member 4 is in a ring structure, one end of the locking member 4 facing away from the outer cylinder 1 is provided with an abutting portion 42, and the spacer 12 can abut against the abutting portion 42, so that the spacer 12 is stably fixed on the outer cylinder 1.
Referring to fig. 6, the spacer 12 is in a shape of a circular disc, and after the spacer 12 is broken by the piston rod 211, the inner part of the outer cylinder 1 is isolated from the outside atmosphere by detaching the locking piece 4 to replace the new spacer 12, thereby preventing water vapor from entering.
Alternatively, the spacer 12 may be a plastic foil.
The working process of the protection device in the embodiment is as follows: firstly, assembling a protection device and installing the protection device on equipment to be protected, specifically, installing a connecting piece 3 on a first connecting part 13, installing a locking piece 4 on a second connecting part 14, then installing the connecting piece 3 on a pressure relief hole of the equipment to be protected, and starting an operation mode of the equipment to be protected; then, in the operation process of the equipment to be protected, when the gas pressure in the gas chamber of the equipment to be protected increases sharply, the rupture membrane is broken, under the action of the difference between the gas pressure in the gas chamber and the gas pressure in the outer cylinder 1, the elastic body 22 is compressed, the piston 21 moves towards the direction far away from the gas discharge part 11, one end of the piston 21, which is far away from the head, penetrates through the spacer 12, the gas discharge part 11 releases gas to the equipment to be protected through the gas discharge hole 111, when the gas pressure in the gas chamber of the equipment to be protected is reduced to a certain value, under the action of the difference between the gas pressures, the elastic body 22 rebounds, the piston 21 moves towards the direction close to the gas discharge part 11, and the; finally, after the device to be protected releases the gas, the piston 21 has moved to the gas release portion 11 and has sealed the gas release hole 111, at this time, the locking member 4 needs to be detached, the broken spacer 12 needs to be removed, a new spacer 12 needs to be replaced, and then the locking member 4 is mounted on the outer cylinder 1, so that the device to be protected continues to operate safely.
Example two:
the embodiment discloses a protection device, which has basically the same structure as the first embodiment and comprises an outer cylinder 1 and a sealing assembly 2, wherein the specific structure of the components is the same as that of the first embodiment.
The difference between the present embodiment and the first embodiment is: referring to fig. 7, a sealing member 212 is disposed on an end surface of the piston 21 facing the air bleeding portion 11, and specifically, a head portion of the piston 21 includes a support portion and a plurality of annular structures disposed on the support portion, the plurality of annular structures are respectively disposed coaxially along an axial direction of the outer cylinder 1, the sealing member 212 is annular, and one sealing member 212 is disposed on each annular structure. When the piston 21 moves toward the discharge portion 11, the seal 212 of the annular structure can abut against the discharge portion 11, ensuring good sealing between the head of the piston 21 and the discharge portion 11.
Alternatively, the sealing member 212 may be formed of a rubber material, so that the sealing member 212 has good sealability and durability.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims (10)

1. A protective device, comprising:
the device comprises an outer cylinder (1), wherein one end of the outer cylinder (1) is provided with an air discharging part (11), the air discharging part (11) is used for air discharging operation, and the other end of the outer cylinder (1) is detachably connected with a spacer (12);
seal assembly (2), seal assembly (2) include piston (21) and elastomer (22), elastomer (22) set up in urceolus (1), one end connect in urceolus (1) orientation the one end of septum (12), the other end orientation portion of exitting (11) extend, the head of piston (21) set up in elastomer (22) the other end can the shutoff portion of exitting (11), piston (21) deviate from the one end of head is passed elastomer (22), can puncture septum (12).
2. Guard according to claim 1, characterized in that the piston (21) is provided with a piston rod (211), the piston rod (211) is arranged on the elastic body (22) in an axial direction parallel to the outer cylinder (1), one end of the piston rod is connected to the head of the piston (21), and the other end of the piston rod passes through the elastic body (22) and can break through the septum (12).
3. The guard according to claim 2, wherein the sealing assembly (2) further comprises a fixing member (23), the fixing member (23) is disposed at an end of the outer cylinder (1) facing the spacer (12), the one end of the elastic body (22) is connected to the fixing member (23), and the other end of the piston rod (211) is movably disposed on the fixing member (23).
4. The protection device according to claim 1, wherein the air release part (11) is provided with an air release hole (111), the piston (21) can block the air release hole (111), the rated air pressure value inside the device to be protected is x, the elastic coefficient of the elastic body (22) is k, the area of the air release hole (111) is S, and the k is more than or equal to 1.1xS and less than or equal to 1.2 xS.
5. Guard according to claim 4, characterised in that a groove (112) is provided on the end face of the venting portion (11) facing the piston (21), the groove (112) being arranged through in the circumferential direction of the venting hole (111), the head of the piston (21) being able to abut in the groove (112).
6. Guard according to claim 1, characterized in that it further comprises a connector (3), said connector (3) being intended to be connected to a device to be protected, said one end of said outer tub (1) being removably connected to said connector (3).
7. Guard means according to claim 6, characterised in that the connecting piece (3) is provided with a first internal thread (31), that the outer cylinder (1) is provided with a first connection portion (13) at the end facing the connecting piece (3), and that the first connection portion (13) is screwed to the connecting piece (3).
8. The protection device according to claim 1, further comprising a catch member (4), wherein the catch member (4) is detachably connected to the other end of the outer cylinder (1), and the spacer (12) is interposed between the outer cylinder (1) and the catch member (4).
9. Guard according to claim 1, characterized in that the outer cylinder (1) is provided with a second connection portion (14) at the end facing the catch member (4), the catch member (4) being detachably connected to the second connection portion (14).
10. Guard according to any of claims 1-9, characterized in that a seal (212) is arranged on the end face of the piston (21) facing the venting portion (11), which seal (212) can abut against the venting portion (11).
CN202110518113.0A 2021-05-12 2021-05-12 Protective device Active CN113251184B (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4079854A (en) * 1976-08-09 1978-03-21 Continental Disc Corporation Rupture disc pressure relief device
DE3102828A1 (en) * 1981-01-29 1982-08-12 Phönix Armaturen-Werke Bregel GmbH, 6000 Frankfurt Bursting-film safety valve
CN1103147A (en) * 1994-09-29 1995-05-31 水利部能源部地质勘探机电研究所 Pressure-differential piston automatic pressure-reducing valve with auxiliary control
BE1012992A3 (en) * 1998-06-02 2001-07-03 Solvay Safety valve for liquid tank.
CN209115757U (en) * 2018-11-23 2019-07-16 滕建辉 A kind of high pressure air relief valve
CN212004432U (en) * 2020-03-31 2020-11-24 丹阳市科尔精密电子有限公司 Explosion-proof relief valve of metalwork

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4079854A (en) * 1976-08-09 1978-03-21 Continental Disc Corporation Rupture disc pressure relief device
DE3102828A1 (en) * 1981-01-29 1982-08-12 Phönix Armaturen-Werke Bregel GmbH, 6000 Frankfurt Bursting-film safety valve
CN1103147A (en) * 1994-09-29 1995-05-31 水利部能源部地质勘探机电研究所 Pressure-differential piston automatic pressure-reducing valve with auxiliary control
BE1012992A3 (en) * 1998-06-02 2001-07-03 Solvay Safety valve for liquid tank.
CN209115757U (en) * 2018-11-23 2019-07-16 滕建辉 A kind of high pressure air relief valve
CN212004432U (en) * 2020-03-31 2020-11-24 丹阳市科尔精密电子有限公司 Explosion-proof relief valve of metalwork

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