CN111173972A - Safety valve and safety valve protection system - Google Patents
Safety valve and safety valve protection system Download PDFInfo
- Publication number
- CN111173972A CN111173972A CN202010151915.8A CN202010151915A CN111173972A CN 111173972 A CN111173972 A CN 111173972A CN 202010151915 A CN202010151915 A CN 202010151915A CN 111173972 A CN111173972 A CN 111173972A
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- Prior art keywords
- safety valve
- pressure
- valve
- connecting rod
- air inlet
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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
- F16K17/12—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side weight-loaded
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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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
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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
- F16K17/164—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
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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
- 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)
- Safety Valves (AREA)
Abstract
The embodiment of the invention provides a safety valve and a safety valve protection system, wherein the safety valve is used for a pressure container or a pressure pipeline and comprises a valve body and an opening and closing assembly, a valve cavity is formed in the valve body, and a gas inlet and a gas outlet are formed in the valve body. The opening and closing assembly comprises a sealing piece, a connecting rod and a gravity piece, the sealing piece is arranged in the valve cavity and used for plugging the air inlet, one end of the connecting rod is connected with the sealing piece, the other end of the connecting rod extends out of the air inlet and is connected with the gravity piece, when the upward pressure applied to the gravity piece exceeds the opening and closing pressure, the connecting rod drives the sealing piece to move upwards to open the air inlet, so that overpressure gas in the pressure container or the pressure pipeline enters from the air inlet and is discharged from the air outlet. The safety valve is simple in structure and low in manufacturing cost, the structure of the safety valve is less affected by temperature environment or vibration, the defect that the performance of the safety valve is unstable in the prior art can be overcome, and the safety valve can be widely applied to boiler, chemical industry, petrochemical industry, oil refining industry and special industry.
Description
Technical Field
The invention relates to the technical field of mechanical equipment, in particular to a safety valve and a safety valve protection system.
Background
The safety valve is an important safety accessory of pressure-bearing special equipment, is arranged on a pressure container or a pressure pipeline, can timely relieve pressure when the pressure in the pressure container or the pressure pipeline exceeds a rated safety value, and can be automatically closed to prevent pressure from leaking after the pressure in the pressure container or the pressure pipeline is reduced to a safety value range, so that safety accidents caused by the operation of the equipment under an overpressure condition are prevented. The safety valve is an important safety accessory of pressure-bearing special equipment such as boilers, pressure vessels, pressure pipelines and the like, is a safety device arranged for preventing the equipment from exploding due to overhigh pressure under abnormal conditions, and plays an important role in protecting personal safety and equipment operation.
At present, safety valves are divided into two types according to working principles, wherein one type is a spring type safety valve, and the other type is a gravity lever type safety valve. The spring-type safety valve adjusts the safety value of the corresponding pressure by adjusting the compression amount of the spring, but when the spring-type safety valve is used on a container with higher temperature, the spring is influenced by high temperature for a long time to reduce the elasticity, so that the take-off pressure of the safety valve deviates from a set value, and therefore, the spring-type safety valve is not only complex in structure and high in manufacturing cost, but also low in safety coefficient. In another gravity lever type safety valve, the pressure of the valve clack is balanced by a lever and a heavy hammer, and the safety value of the corresponding pressure is adjusted by moving the position of the heavy hammer or changing the weight of the heavy hammer, but the structure of the safety valve is heavier, the heavy hammer is not in proportion to the size of the valve body, the sealing performance of the valve is sensitive to vibration, the valve clack is easy to deflect when returning to the seat, the pressure of the returning seat is lower, and the sealing can be kept only when the pressure is reduced to 70% of the normal working pressure. Therefore, a safety valve which has a simple structure and can be effectively sealed in a high-temperature environment or a vibration environment so as to ensure reliability is lacking in the market at present.
Disclosure of Invention
To the above-mentioned technical problem that exists among the prior art, this disclosure provides a relief valve and relief valve protection system, this relief valve simple structure, and working property is stable.
The embodiment of the invention discloses a safety valve which is used for a pressure container or a pressure pipeline and is characterized by comprising the following components:
the valve body is internally provided with a valve cavity, and the valve body is provided with an air inlet and an air outlet which are respectively communicated with the valve cavity;
the opening and closing assembly comprises a sealing piece, a connecting rod and a gravity piece which are sequentially arranged from top to bottom, the sealing piece is used for plugging the air inlet, one end of the connecting rod is connected with the sealing piece, the other end of the connecting rod extends out of the air inlet and is connected with the gravity piece, so that when the upward pressure applied to the gravity piece exceeds the opening and closing pressure of the safety valve, the connecting rod drives the sealing piece to move upwards to open the air inlet, and overpressure gas in the pressure container or the pressure pipeline enters the valve cavity from the air inlet and is discharged from the air outlet.
In some embodiments, the valve body is provided with a bulge, an air inlet passage communicated with the valve cavity is formed in the bulge, and the air inlet passage is connected with the valve cavity to form the air inlet; the opening and closing assembly further comprises a limiting part positioned in the air inlet channel, and the limiting part is sleeved on the connecting rod to limit the radial displacement of the connecting rod.
In some embodiments, the gravity member includes a plurality of gravity balls with different weights, and the gravity balls can be respectively used for being detachably connected with the connecting rod.
In some embodiments, the sealing member is disposed in the valve cavity and has a sealing surface, and when the safety valve is in a closed state, the sealing surface is attached to the air inlet to cover the air inlet; and a sealing layer is arranged on the sealing surface.
In some embodiments, the cross section of the air inlet channel is circular, the limiting member has an outer ring portion in interference fit with the inner wall of the air inlet channel, and an inner ring portion sleeved on the connecting rod, the outer ring portion is connected with the inner ring portion, and a hollow portion is formed between the outer ring portion and the inner ring portion.
In some embodiments, a plurality of the gravity balls are provided with threaded holes, and the connecting rod is provided with external threads in threaded connection with the threaded holes.
In some embodiments, the sealing layer is made of heat-resistant rubber or alloy.
In some embodiments, the relief valve further comprises a first flange disposed at the gas inlet; the first flange and the valve body are integrally formed.
In some embodiments, the safety valve further comprises a second flange provided at the air outlet; the second flange and the valve body are integrally formed.
The embodiment of the invention also discloses a safety valve protection system, which comprises the safety valve, a pressure container or a pressure pipeline communicated with the air inlet of the safety valve, and an emptying pipeline communicated with the air outlet of the safety valve.
Compared with the prior art, the beneficial effects of the embodiment of the present disclosure are that: this is disclosed through the subassembly of opening and close including sealing member, connecting rod and gravity piece, above-mentioned sealing member is used for the shutoff air inlet, when the pressure in the pressure vessel or the pressure line be connected with the relief valve does not exceed safe value, above-mentioned gravity piece is because of the action of gravity, make the sealing member keep shutoff air inlet through the connecting rod, when pressure in pressure vessel or the pressure line exceeded safe value, the superpressure gas in it acted on this gravity piece, gravity piece atress upward movement, thereby drive the sealing member upward movement and open the air inlet, make superpressure gas can get into and discharge by the gas outlet by the air inlet. The safety valve is simple in structure, low in manufacturing cost, small in influence of temperature environment or vibration on the structure, capable of overcoming the defect that the performance of the safety valve is unstable in the prior art, and capable of effectively increasing the reliability of the safety valve.
Drawings
In the drawings, which are not necessarily drawn to scale, like reference numerals may describe similar components in different views. Like reference numerals having letter suffixes or different letter suffixes may represent different instances of similar components. The drawings illustrate various embodiments generally by way of example and not by way of limitation, and together with the description and claims serve to explain the disclosed embodiments. The same reference numbers will be used throughout the drawings to refer to the same or like parts, where appropriate. Such embodiments are illustrative, and are not intended to be exhaustive or exclusive embodiments of the present apparatus or method.
FIG. 1 is a cross-sectional view of a safety valve according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a limiting member of a safety valve according to an embodiment of the present invention.
The members denoted by reference numerals in the drawings:
1-a valve body; 11-an air inlet; 12-air outlet; 13-a boss; 14-a valve cavity; 15-an intake passage; 2-opening and closing the assembly; 21-a seal; 22-a connecting rod; 23-a gravity element; 3-a limiting part; 31-an outer ring portion; 32-an inner ring portion; 4-a first flange; 5-a second flange.
Detailed Description
For a better understanding of the technical aspects of the present disclosure, reference is made to the following detailed description taken in conjunction with the accompanying drawings. Embodiments of the present disclosure are described in further detail below with reference to the figures and the detailed description, but the present disclosure is not limited thereto.
The use of "first," "second," and similar terms in this disclosure is not intended to indicate any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element preceding the word covers the element listed after the word, and does not exclude the possibility that other elements are also covered. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
In the present disclosure, when a specific device is described as being located between a first device and a second device, there may or may not be intervening devices between the specific device and the first device or the second device. When a particular device is described as being coupled to other devices, that particular device may be directly coupled to the other devices without intervening devices or may be directly coupled to the other devices with intervening devices.
All terms (including technical or scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs unless specifically defined otherwise. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
The embodiment of the invention discloses a safety valve which is used for a pressure container or a pressure pipeline, and can be understood that the safety valve is arranged on the pressure container or the pressure pipeline, when the pressure in the pressure container or the pressure pipeline exceeds a rated safety pressure value, the safety valve can be opened in time to release the pressure, and after the internal pressure of the safety valve is reduced to be within a safety pressure value range, the safety valve can be automatically closed to prevent the pressure from leaking outwards, so that the safety accident caused by the operation of equipment under the condition of overpressure can be prevented. As shown in fig. 1, the safety valve of the embodiment of the present invention includes a valve body 1 and an opening and closing assembly 2; a valve cavity 14 is formed in the valve body 1, an air inlet 11 and an air outlet 12 which are respectively communicated with the valve cavity 14 are arranged on the valve body 1, the air inlet 11 is connected with a pressure container or a pressure pipeline, when the pressure in the valve body exceeds a safety value, the safety valve is opened, and the air in the pressure container or the pressure pipeline enters the valve cavity 14 from the air inlet 11 and is discharged to a pressure relief container or a pressure relief pipeline communicated with the air outlet 12 from the air outlet 12, so that the pressure relief of the pressure container or the pressure pipeline is realized, and the safety accident is avoided.
With continuing reference to fig. 1, the opening and closing assembly 2 includes a sealing member 21, a connecting rod 22 and a gravity member 23 which are sequentially arranged from top to bottom, the sealing member 21 is used for blocking the air inlet 11, and the sealing member 21 can effectively block the air inlet 11 when the pressure in the pressure vessel or the pressure pipeline does not exceed a safety value under the action of gravity of the gravity member 23, so that the safety valve is in a closed state; one end of the connecting rod 22 is connected to the sealing member 21, and the other end of the connecting rod extends out of the air inlet 11 and is connected to the gravity member 23, so that when the upward pressure applied to the gravity member 23 exceeds the opening and closing pressure of the safety valve, that is, the pressure in the pressure vessel or the pressure pipe exceeds a preset pressure value, the gravity member 23 is pushed to move upward, the connecting rod 22 drives the sealing member 21 to move upward to open the air inlet 11, and the safety valve is opened, so that the gas in the pressure vessel or the pressure pipe enters the valve cavity 14 from the air inlet 11 and is discharged from the air outlet 12 to relieve the pressure in the pressure vessel or the pressure pipe.
It can be understood that the safety pressure values of the pressure vessels or the pressure pipelines corresponding to the gravity balls with different weights are different, and a user can select the gravity ball of the safety valve with the corresponding specification weight according to actual requirements so as to meet the requirements of the safety values of different pressure equipment.
According to the opening and closing assembly 2 comprising the sealing piece 21, the connecting rod 22 and the gravity piece 23, the sealing piece 21 is used for blocking the air inlet 11, when the pressure in a pressure container or a pressure pipeline connected with the safety valve does not exceed a safety value, the gravity piece 23 enables the sealing piece 21 to keep blocking the air inlet 11 through the connecting rod 22 due to the action of gravity, and the safety valve is in a closed state; when the pressure in the pressure container or the pressure pipeline exceeds a safety value, the gas in the pressure container or the pressure pipeline pushes the gravity piece 23 to move upwards, so that the sealing piece 21 is driven to move upwards to open the gas inlet 11, the gas in the pressure container or the pressure pipeline can enter the valve cavity 14 from the gas inlet 11 and be discharged from the gas outlet 12, the pressure relief is realized, and the safety is ensured. The safety valve is simple in structure and low in manufacturing cost, the structure of the safety valve is less affected by the temperature environment or the vibration environment, the defect that the performance of the safety valve is unstable in the prior art can be overcome, the reliability of the safety valve is effectively improved, and the safety valve can be widely applied to the boiler, chemical industry, petrochemical industry, oil refining industry and special industry.
In some embodiments, the valve body 1 has a protruding portion 13, an air inlet passage 15 (shown in fig. 1) is formed in the protruding portion, the air inlet passage 15 is communicated with the valve cavity 14, the end of the air inlet passage 15 connected with the valve cavity 14 forms the air inlet 11, i.e. the air inlet 11 is located at the end of the protruding portion 13 close to the valve cavity 14, and the other end of the connecting rod 22 penetrates out of one end of the protruding portion 13 to be connected with the gravity piece 23, it can be understood that when the pressure in the pressure container or the pressure pipeline exceeds a preset value, the air in the pressure container or the pressure pipeline enters from the air inlet passage 15 and flows; the opening and closing assembly 2 further comprises limiting pieces 3 positioned in the air inlet passage 15, the number of the limiting pieces 3 is unlimited, and the limiting pieces 3 are sleeved on the connecting rod 22 to limit the radial displacement of the connecting rod 22. Fig. 1 shows two limiting members 3, and the two limiting members 3 are arranged up and down along the axial direction of the connecting rod 22, so that when the length of the connecting rod 22 is too long, the safety valve is in the process of repeatedly opening and closing, and radial displacement occurs. It can be understood that if the connecting rod 22 is displaced radially, the effect of the sealing element 21 for blocking the air inlet 11 will be affected, that is, the limiting element 3 limits the connecting rod 22, so that the problem of leakage of the safety valve caused by the untight sealing of the air inlet 11 by the sealing element 21 can be effectively avoided.
In some embodiments, the gravity member 23 comprises a plurality of gravity balls with different weights, and the gravity balls can be respectively used for detachably connecting with the connecting rod 22. It can be understood that, as the gravity of the gravity ball increases, the pressure safety value corresponding to the pressure container or the pressure pipeline connected with the safety valve also increases relatively, that is, the opening and closing pressure of the safety valve increases. The gravity ball is connected with the connecting rod 22 in a detachable mode, so that the opening and closing pressure of the safety valve can be flexibly adjusted by replacing the gravity ball by aiming at different safety values corresponding to different pressure devices, the requirements of different pressure devices are met, the opening and closing pressure of the safety valve can be adjusted by only replacing the gravity ball, the operation is simple, the cost is low, and the application range is wide.
The detachable connection of the gravity ball and the connecting rod 22 is not exclusive, and the gravity ball and the connecting rod can be connected in a threaded connection or a clamping connection mode. Preferably, all be equipped with the screw hole on the above-mentioned a plurality of gravity balls, be equipped with the external screw thread with screw hole threaded connection on the connecting rod 22, user operation, the stable and processing cost lower of connection are convenient for to above-mentioned threaded connection's mode.
In some embodiments, the seal 21 is disposed in the valve chamber 14 and has a sealing surface that engages with the gas inlet 11 to close the gas inlet 11 when the safety valve is in the closed state; in addition, a sealing layer (not shown in the figure) may be disposed on the sealing surface, and the sealing layer may enable the sealing member 21 to stably block the air inlet 11 when being affected by vibration or high temperature, and it can be understood that the sealing layer may enable the opening and closing process of the safety valve to be more stable, and reduce the influence of vibration or high temperature on the opening and closing process of the safety valve, thereby increasing the stability of the safety valve.
In some embodiments, the material of the sealing layer may be heat-resistant rubber or alloy.
In some embodiments, the cross section of the air inlet channel 15 is circular, as shown in fig. 2, the limiting member 3 has an outer ring portion 31 that is in interference fit with the inner wall of the air inlet channel 15, and an inner ring portion 32 that is sleeved on the connecting rod 22, the outer ring portion 31 enables the limiting member 3 to be stably disposed in the air inlet channel 15, the outer ring portion 31 is connected with the inner ring portion 32, and a hollow portion is formed therebetween, so that overpressure gas can enter the air inlet 11 through the hollow portion and be exhausted from the air outlet 12. The shape of the hole of the hollow portion is not limited, and preferably, as shown in fig. 2, the shape of the hole is a sector.
In some embodiments, the safety valve further comprises a first flange 4 provided at the gas inlet 11, and the safety valve can be connected with a pressure vessel or a pressure pipeline through the first flange 4; the first flange 4 is integrally formed with the valve body 1 to ensure the structural stability of the first flange 4 and the valve body 1.
In some embodiments, the safety valve further comprises a second flange 5 disposed at the air outlet 12, and the safety valve can be connected with a pressure relief container or a pressure relief pipeline through the second flange 5; the second flange 5 is integrally formed with the valve body 1 to ensure structural stability of the second flange 5 and the valve body 1.
The embodiment of the invention also provides a safety valve protection system, which comprises the safety valve, a pressure container or a pressure pipeline communicated with the gas inlet 11 of the safety valve, and an emptying pipeline communicated with the gas outlet 12 of the safety valve. The safety valve is simple in structure and low in manufacturing cost, the structure of the safety valve is less affected by temperature environment or vibration, the defect that the performance of the safety valve is unstable in the prior art can be effectively overcome, and the safety valve can be widely applied to boiler, chemical industry, petrochemical industry, oil refining industry and special industry.
Moreover, although exemplary embodiments have been described herein, the scope thereof includes any and all embodiments based on the disclosure with equivalent elements, modifications, omissions, combinations (e.g., of various embodiments across), adaptations or alterations. The elements of the claims are to be interpreted broadly based on the language employed in the claims and not limited to examples described in the present specification or during the prosecution of the application, which examples are to be construed as non-exclusive. It is intended, therefore, that the specification and examples be considered as exemplary only, with a true scope and spirit being indicated by the following claims and their full scope of equivalents.
The above description is intended to be illustrative and not restrictive. For example, the above-described examples (or one or more versions thereof) may be used in combination with each other. For example, other embodiments may be used by those of ordinary skill in the art upon reading the above description. In addition, in the foregoing detailed description, various features may be grouped together to streamline the disclosure. This should not be interpreted as an intention that a disclosed feature not claimed is essential to any claim. Rather, the subject matter of the present disclosure may lie in less than all features of a particular disclosed embodiment. Thus, the following claims are hereby incorporated into the detailed description as examples or embodiments, with each claim standing on its own as a separate embodiment, and it is contemplated that these embodiments may be combined with each other in various combinations or permutations. The scope of the disclosure should be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled.
The above embodiments are merely exemplary embodiments of the present disclosure, which is not intended to limit the present disclosure, and the scope of the present disclosure is defined by the claims. Various modifications and equivalents of the disclosure may occur to those skilled in the art within the spirit and scope of the disclosure, and such modifications and equivalents are considered to be within the scope of the disclosure.
Claims (10)
1. A safety valve for a pressure vessel or pressure line, comprising:
the valve body is internally provided with a valve cavity, and the valve body is provided with an air inlet and an air outlet which are respectively communicated with the valve cavity;
the opening and closing assembly comprises a sealing piece, a connecting rod and a gravity piece which are sequentially arranged from top to bottom, the sealing piece is used for plugging the air inlet, one end of the connecting rod is connected with the sealing piece, the other end of the connecting rod extends out of the air inlet and is connected with the gravity piece, so that when the upward pressure applied to the gravity piece exceeds the opening and closing pressure of the safety valve, the connecting rod drives the sealing piece to move upwards to open the air inlet, and overpressure gas in the pressure container or the pressure pipeline enters the valve cavity from the air inlet and is discharged from the air outlet.
2. The safety valve according to claim 1, wherein the valve body has a boss portion in which an intake passage communicating with the valve chamber is formed, the intake passage forming the intake port at an end connected with the valve chamber; the opening and closing assembly further comprises a limiting part positioned in the air inlet channel, and the limiting part is sleeved on the connecting rod to limit the radial displacement of the connecting rod.
3. The safety valve according to claim 1, characterized in that said gravity element comprises a plurality of gravity balls of unequal weight, respectively adapted to be removably coupled with said connecting rod.
4. The safety valve of claim 1, wherein the seal is disposed within the valve chamber and has a sealing surface that engages the inlet port to close the inlet port when the safety valve is in a closed state; and a sealing layer is arranged on the sealing surface.
5. The safety valve according to claim 2, wherein the cross-section of the air inlet passage is circular, the retainer has an outer ring portion that is in interference fit with the inner wall of the air inlet passage, and an inner ring portion that is fitted around the connecting rod, and the outer ring portion is connected to the inner ring portion with a hollow portion formed therebetween.
6. The safety valve according to claim 3, wherein a plurality of the gravity balls are provided with threaded holes, and the connecting rod is provided with external threads which are in threaded connection with the threaded holes.
7. The safety valve of claim 4, wherein the sealing layer is made of heat-resistant rubber or alloy.
8. The safety valve of claim 1, further comprising a first flange provided at the gas inlet; the first flange and the valve body are integrally formed.
9. The safety valve of claim 1, further comprising a second flange provided at the gas outlet; the second flange and the valve body are integrally formed.
10. A safety valve protection system comprising a safety valve according to any of claims 1 to 9, further comprising a pressure vessel or pressure line in communication with the inlet of the safety valve, and a vent line in communication with the outlet of the safety valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010151915.8A CN111173972A (en) | 2020-03-06 | 2020-03-06 | Safety valve and safety valve protection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010151915.8A CN111173972A (en) | 2020-03-06 | 2020-03-06 | Safety valve and safety valve protection system |
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| Publication Number | Publication Date |
|---|---|
| CN111173972A true CN111173972A (en) | 2020-05-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010151915.8A Pending CN111173972A (en) | 2020-03-06 | 2020-03-06 | Safety valve and safety valve protection system |
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| CN (1) | CN111173972A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114576404A (en) * | 2020-11-30 | 2022-06-03 | 中国石油天然气股份有限公司 | Breather valve and flash tank |
-
2020
- 2020-03-06 CN CN202010151915.8A patent/CN111173972A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114576404A (en) * | 2020-11-30 | 2022-06-03 | 中国石油天然气股份有限公司 | Breather valve and flash tank |
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