CN201884743U - Structure of fusible plug - Google Patents
Structure of fusible plug Download PDFInfo
- Publication number
- CN201884743U CN201884743U CN2010206437993U CN201020643799U CN201884743U CN 201884743 U CN201884743 U CN 201884743U CN 2010206437993 U CN2010206437993 U CN 2010206437993U CN 201020643799 U CN201020643799 U CN 201020643799U CN 201884743 U CN201884743 U CN 201884743U
- Authority
- CN
- China
- Prior art keywords
- main valve
- fusible
- fusible plug
- valve body
- spring
- 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.)
- Expired - Fee Related
Links
- 210000000056 organ Anatomy 0.000 claims description 19
- 239000003507 refrigerant Substances 0.000 abstract description 4
- 239000007788 liquid Substances 0.000 abstract description 3
- 230000002159 abnormal effect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 238000005057 refrigeration Methods 0.000 description 15
- 239000002184 metal Substances 0.000 description 11
- 239000003795 chemical substances by application Substances 0.000 description 6
- 230000004927 fusion Effects 0.000 description 6
- 238000002844 melting Methods 0.000 description 6
- 230000008018 melting Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 3
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 239000003870 refractory metal Substances 0.000 description 2
- 241000973497 Siphonognathus argyrophanes Species 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 210000001124 body fluid Anatomy 0.000 description 1
- 239000010839 body fluid Substances 0.000 description 1
- 230000019771 cognition Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
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- Safety Valves (AREA)
Abstract
The utility model discloses a fusible plug, which comprises a main valve and a fusible piece. The fusible piece blocks one port of the main valve, the other port of the main valve is communicated with a system connecting pipe, an elastic ejector is disposed in the main valve, one end face of the elastic ejector is abutted to the fusible piece, and when the fusible plug is not operated, a spring structure of the elastic ejector is compressed. The fusible plug is a safe pressure relief device, because of the additional elastic ejector, the effect of fusible plug is guaranteed more effectively by the aid of the structure when a refrigerating system is in abnormal states of over high temperature or pressure, the fusible piece is released from the main valve under elastic force of the elastic ejector so that refrigerant can be discharged from the refrigerating system, fusible liquid around the valve is fused and blocked by the elastic ejector without being re-coagulated at a connecting pipe opening and covering the pipe opening, and parts and operational safety of an air conditioner are guaranteed.
Description
Technical field
The utility model relates to refrigeration system safety technique field, more particularly, relates to a kind of structure of fusible plug.
Background technique
The application of fusible plug is very extensive, at refrigerating field, in order to guarantee the refrigeration system safe operation, the equipment that prevents is owing to superpressure has an accident, eliminate except fundamentally taking measures or reduce the possibility that may cause superpressure, the installing fusible plug is a key safety measure.As in the R290 air-conditioning system, just need use the safety that fusible plug guarantees system, when system pressure exceeded safety value, fusible plug work outwards emitted the refrigeration agent of the high side of condensation.The melting temperature of fusible plug and pressure are selected according to designing requirement.Usually; when some large-scale refrigerating plant working machine malfunctions; if built-in system high pressure side refrigerant temperature is too high; then the alloy on the fusible plug in the system (generally being arranged on the liquid line) melts; refrigeration agent all is discharged in the atmosphere environment by fusible plug; thereby protection air conditioner component and security of operation have avoided system pressure too high and burst the phenomenon of system pipeline or component.As shown in Figure 1, the fusible plug of prior art is made of main valve body and easy melt.Wherein main valve body is made by refractory metal, and easily melt is made by low melting metal.There is following deficiency in the fusible plug of prior art: stop up connecting tube when 1, filling low melting metal easily.2, when easy melt reaches fusing point, at first melt near the meltable cognition of refrigeration system side, do not lag behind away from refrigeration agent, the opposite side fusing of exposing in atmosphere environment, sometimes even not fusing, the pressure of delivery system on request.Another kind of situation is: easily melt drops down when fusion in the regelation of main valve body periphery, and the shutoff connecting tube mouth of pipe can not effectively be discharged the refrigeration agent in the refrigeration system.3, under the situation of High Temperature High Pressure, easily melt fusing or deliquescing, the refrigeration system internal pressure discharges, and will not have consoluet easy melt monoblock outwards to launch away, and near equipment or personnel are caused damage.
Summary of the invention
The technical problems to be solved in the utility model is, the deficiency at above-mentioned prior art exists provides a kind of simple in structure, effectively, the fusible plug of high safety.
The technical solution adopted in the utility model is, a kind of fusible plug is provided, comprise main valve body and easy melt, a port of easy melt shutoff main valve body, another port connected system connecting tube of main valve body is provided with the bullet apical organ in main valve body, an end face of described bullet apical organ is pressed on the easy melt, under off working state, the spring structure that plays apical organ is in confined state.
In the above-mentioned fusible plug, described bullet apical organ comprises roof shell and spring seat, is provided with spring between roof shell and spring seat.
In the above-mentioned fusible plug, spring seat is provided with the spring positioning rod, and described spring housing is contained on the spring positioning rod.
In the above-mentioned fusible plug, described main valve body is provided with boss, and spring seat is resisted against on the described boss.
Compared with prior art, the utlity model has following advantage:
1. fusible plug of the present utility model is a very safe pressure releasing means, owing to play the increase of apical organ, this structure has more effectively been guaranteed when the abnormal condition of temperature or overpressure appears in refrigeration system, fusible plug can effectively play a role, easily melt is under the elastic force effect that plays apical organ, breaking away from main valve body makes refrigeration agent can discharge refrigeration system, the meltable body fluid body that fusion is dropped down at the valve body periphery is played the apical organ obstruct, can air conditioner component and security of operation have not been ensured at the salty covering mouth of pipe that newly condenses of connecting tube.
2. easy melt of the present utility model is provided with the metal string bag launching mouth, and when easy melt began fusion and played apical organ to launch with certain speed, the metal string bag received the metal group of launching, and has protected the equipment and the operator of system's periphery.
3. the utility model is simple in structure, easy to process and cost is little.
Description of drawings
Fig. 1 is the structural representation of prior art fusible plug;
Fig. 2 is the structural representation of the utility model fusible plug;
Fig. 3 is the bullet apical organ structural representation of the utility model fusible plug.
The parts that each label is represented in the accompanying drawing are as follows: connecting tube 1, main valve body 2, easy melt 3, the metal string bag 4, roof shell 5, spring 6, spring positioning rod 7, spring seat 8, boss 9.
Embodiment
Below pass through embodiment, and the utility model is described in further detail in conjunction with the accompanying drawings.
Referring to Fig. 1, existing fusible plug structure is made of main valve body 2 and easy melt 3.Main valve body 2 is cylinder-like structures, is made by refractory metal, and its end is by easy melt 3 shutoff of low melting metal, the connecting tube 1 that the other end is tightly connected and communicates with refrigeration system condensation high pressure side.In actual use, the phenomenon that easy melt metal solidifies the shutoff mouth of pipe again behind fusion or the partial melting fully appears in existing fusible plug easily, can not effectively guarantee the safety of system.
Referring to Fig. 2, the utility model fusible plug is made up of main valve body 2, easy melt 3, bullet apical organ and the metal string bag 4, plays apical organ and is fixedly mounted in the main valve body, is made up of roof shell 5, spring 6, spring positioning rod 7, spring seat 8.The metal string bag 4 is installed in the outlet end of main valve body 2.Spring seat is fixedly mounted in the main valve body by projection, and the side near connecting tube is equipped with the spring positioning rod on the spring seat, and spring 6 is enclosed within on the spring positioning rod, is clipped between spring seat and the roof shell.Main valve body is provided with boss 9, and spring seat is resisted against on the described boss 9.Be equipped with a plurality of little hole paths that refrigeration agent is passed through on roof shell 5, the spring seat 8, roof shell suppresses on easy melt, and spring is in extruded state.Take place unusually when refrigeration system is inner, cause refrigerant temperature to continue to raise, pressure increases, the part high temperature and high pressure gas contacts with easy melt through playing apical organ, and when refrigerant temperature was higher than meltable bulk melting point, easily melt began fusion, easily the continuous fusion with easy melt reduces rapidly melt to the active force that plays apical organ, the elastic potential energy of spring is converted into easy melt kinetic energy, launches out main valve body in the valve pocket of main valve body, and the easy melt that launches is by 4 interceptions of the metal string bag.
Referring to Fig. 3, the structural representation of the utility model fusible plug bullet apical organ, spring positioning rod 7 is arranged between spring seat 8 and the roof shell 5.Wherein design has a plurality of circular holes on spring seat 8 and the roof shell 5, allows high temperature and high pressure gas (or liquid) by playing apical organ, contacts with easy melt.
Claims (4)
1. fusible plug, comprise main valve body (2) and easy melt (3), a port of easy melt (3) shutoff main valve body (2), another port connected system connecting tube (1) of main valve body (2), it is characterized in that: in main valve body (2), be provided with the bullet apical organ, one end face of described bullet apical organ is pressed on the easy melt (3), and under off working state, the spring structure that plays apical organ is in confined state.
2. fusible plug according to claim 1 is characterized in that: described bullet apical organ comprises roof shell (5) and spring seat (8), is provided with spring (6) between roof shell (5) and spring seat (8).
3. fusible plug according to claim 2 is characterized in that: spring seat (8) is provided with spring positioning rod (7), and described spring (6) is sleeved on the spring positioning rod (7).
4. fusible plug according to claim 3 is characterized in that: described main valve body (2) is provided with boss (9), and spring seat (8) is resisted against on the described boss (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206437993U CN201884743U (en) | 2010-12-06 | 2010-12-06 | Structure of fusible plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206437993U CN201884743U (en) | 2010-12-06 | 2010-12-06 | Structure of fusible plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201884743U true CN201884743U (en) | 2011-06-29 |
Family
ID=44182287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206437993U Expired - Fee Related CN201884743U (en) | 2010-12-06 | 2010-12-06 | Structure of fusible plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201884743U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104930655A (en) * | 2015-06-10 | 2015-09-23 | 广东美的暖通设备有限公司 | Fusible plug structure, mounting method thereof and air conditioner with fusible plug structure |
| CN107154539A (en) * | 2016-03-04 | 2017-09-12 | 深圳带路科技有限公司 | A kind of temperature alarm wire clamp |
| CN109882624A (en) * | 2019-03-05 | 2019-06-14 | 上海百图低温阀门有限公司 | A kind of low temperature quick action emergency valve of novel spring cylinder separate structure |
-
2010
- 2010-12-06 CN CN2010206437993U patent/CN201884743U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104930655A (en) * | 2015-06-10 | 2015-09-23 | 广东美的暖通设备有限公司 | Fusible plug structure, mounting method thereof and air conditioner with fusible plug structure |
| CN104930655B (en) * | 2015-06-10 | 2017-11-10 | 广东美的暖通设备有限公司 | Meltable stud structure and its installation method, the air conditioner provided with the meltable stud structure |
| CN107154539A (en) * | 2016-03-04 | 2017-09-12 | 深圳带路科技有限公司 | A kind of temperature alarm wire clamp |
| CN109882624A (en) * | 2019-03-05 | 2019-06-14 | 上海百图低温阀门有限公司 | A kind of low temperature quick action emergency valve of novel spring cylinder separate structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110629 Termination date: 20181206 |