CN113847552A - Steam pressure reducing valve group - Google Patents
Steam pressure reducing valve group Download PDFInfo
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- CN113847552A CN113847552A CN202111173157.0A CN202111173157A CN113847552A CN 113847552 A CN113847552 A CN 113847552A CN 202111173157 A CN202111173157 A CN 202111173157A CN 113847552 A CN113847552 A CN 113847552A
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- corrugated pipe
- steam pressure
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- 230000017525 heat dissipation Effects 0.000 claims abstract description 43
- 238000003825 pressing Methods 0.000 claims abstract description 7
- 238000001125 extrusion Methods 0.000 claims description 17
- 239000002184 metal Substances 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 6
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 6
- 238000013461 design Methods 0.000 abstract description 3
- 230000007774 longterm Effects 0.000 abstract description 3
- 239000012535 impurity Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000000712 assembly Effects 0.000 description 4
- 238000000429 assembly Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 4
- 239000000428 dust Substances 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
- B01D35/04—Plug, tap, or cock filters filtering elements mounted in or on a faucet
- B01D35/046—Plug, tap, or cock filters filtering elements mounted in or on a faucet the filtering element being mounted in the faucet plug
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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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- 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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/002—Actuating devices; Operating means; Releasing devices actuated by temperature variation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/02—Pipe-line systems for gases or vapours
- F17D1/06—Pipe-line systems for gases or vapours for steam
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Safety Valves (AREA)
Abstract
The invention provides a steam pressure reducing valve bank, wherein a corrugated pipe stop valve, a pressure reducing valve, a corrugated pipe stop check valve and a safety valve are sequentially arranged between a front end inlet and a rear end outlet along the direction from the front end inlet to the direction away from the front end inlet; the shell is provided with a first heat dissipation hole and a second heat dissipation hole in a relative mode; a first baffle is arranged at the inner side of the operation cavity close to the first heat dissipation hole; and a second baffle is arranged on the inner side of the operation cavity close to the second heat dissipation hole, and after the corrugated pipe section is heated, the thermal expansion piece can be heated to expand so as to push the pressing plate downwards. The invention provides a steam pressure reducing valve group, which can adopt a modular design, effectively prevent leakage, optimize the size, effectively dissipate heat at high temperature, protect a spring to enable a safety valve to be in a long-term stable working state, and have better use effect.
Description
Technical Field
The invention relates to the technical field of pressure reducing valves, in particular to a steam pressure reducing valve bank.
Background
In the prior art, a high temperature and high pressure resistant steam pressure reducing valve set with the publication number of CN213629140U comprises an equipment main body, wherein the outer side of the equipment main body is connected with a filter pipe, the outer side of the filter pipe is fixedly connected with a pressure pipeline, the outer part of the filter pipe is provided with a protection pipe movably connected with the outer side of the equipment main body, the outer part of the protection pipe is movably connected with a protection strip, the outer side surface of the equipment main body is provided with a connecting groove, the inner side surface of the connecting groove is provided with an inlet groove, the inner end of the inlet groove is fixedly connected with a rotating groove, one end of the rotating groove is fixedly connected with a magnetic block, the outer part of the protection pipe is fixedly connected with a connecting block movably connected with the inlet groove and the rotating groove, one side of the connecting block is fixedly connected with a magnetic layer movably connected with the magnetic block, the protection strip comprises an inner layer movably connected with the protection pipe, the outer part of the inner layer is movably connected with a plurality of supporting plates, the supporting plates are divided into two groups, the high temperature and high pressure resistant steam pressure resistant valve set, the problem that the high-temperature and high-pressure resistance of the existing steam reducing valve is relatively weak is solved.
However, the method still has the obvious defects in the using process: 1. the safety valve is not arranged in the device, and when the pressure in the pipeline is higher, the potential safety hazard of explosion exists, so the safety coefficient of the use of the device is lower; 2. in traditional relief valve, the spring relief valve is comparatively commonly used, but when using under high temperature high pressure steam operating mode, the medium temperature conducts the spring, makes the elasticity of spring change, influences the stability and the accuracy of setting pressure for the service error increases gradually.
Disclosure of Invention
The present invention is directed to a steam pressure reducing valve set to solve the above problems.
In order to achieve the purpose, the invention provides the following technical scheme:
a vapor pressure relief valve stack comprising:
the pipeline comprises a pipeline body, wherein a front end inlet and a rear end outlet are respectively arranged on two sides of the pipeline body, a corrugated pipe stop valve, a pressure reducing valve, a corrugated pipe stop check valve and a safety valve are sequentially arranged between the front end inlet and the rear end outlet along the direction from the front end inlet to the rear end outlet, pressure measuring assemblies are respectively arranged between the corrugated pipe stop valve and the pressure reducing valve and between the corrugated pipe stop check valve and the safety valve, the safety valve is communicated with a corrugated pipe throttling stop valve through a first connecting pipe, and the corrugated pipe throttling stop valve is communicated with the front end inlet through a second connecting pipe;
the safety valve comprises an outer shell, an operation cavity is formed in the outer shell, a push rod is movably arranged in the operation cavity, a sealing plate is fixedly arranged at the bottom of the push rod, an extrusion part is fixedly sleeved on a section of the push rod, which is positioned in the operation cavity, a fixing part is fixedly arranged in the operation cavity, a reset spring is connected between the extrusion part and the fixing part, a first heat dissipation hole and a second heat dissipation hole are formed in the outer shell in a relative mode, a safety valve outlet is formed in the safety valve, and the safety valve outlet is communicated with a pipe cavity of the pipeline body;
a first baffle is arranged in the operation cavity close to the inner side of the first heat dissipation hole, a protruding block is fixedly arranged on the first baffle, so that the protruding block can be stirred by the extrusion piece when the extrusion piece moves, the first baffle is driven to move, and the upper side and the lower side of the first baffle are respectively connected to the inner wall of the operation cavity through an upper connecting spring and a lower connecting spring;
a second baffle is arranged on the inner side, close to the second heat dissipation hole, of the operation cavity, the bottom of the second baffle is connected to the outer wall of the outer shell through a compression spring, a connecting rope is fixedly arranged at the bottom of the second baffle, and the connecting rope is an inelastic rope;
the bellows is by check valve includes the bellows section, the embedding is provided with one section heat pipe in the bellows section, the fixed thermal expansion piece that is provided with in bottom of heat pipe, the bellows is by fixed being provided with the fixed block in the check valve, the mounting groove has been seted up in the fixed block, it is provided with guide spring to connect in the mounting groove, the last connection of guide spring is provided with the clamp plate, the bellows section is being heated the back, and thermal expansion piece can be heated the inflation and then promote the clamp plate downwards, the one end that the second baffle was kept away from to the connecting rope is fixed in on the clamp plate.
Preferably, the pressure measuring assembly comprises a pressure valve, and a pressure gauge is arranged on the pressure valve in a communication mode.
Preferably, a radiator is arranged between the pressure valve and the pressure gauge.
Preferably, a filter is arranged between the bellows stop valve and the pressure reducing valve in a communication mode.
Preferably, the filter is provided with a relief valve in communication therewith.
Preferably, a first guide rail is fixedly arranged in the operation cavity, and a matched sliding groove is formed in the first baffle plate, so that the first baffle plate can slide along the first guide rail.
Preferably, a second guide rail is fixedly arranged on the outer wall of the outer shell, and a sliding groove matched with the second baffle is formed in the second baffle, so that the second baffle can slide along the second guide rail.
Preferably, the thermal expansion member is a thermal expansion memory metal.
Preferably, the shell body is provided with a guide groove, and the connecting rope passes through the guide groove and then passes through a plurality of guide structures for limiting the rope passing route and is finally fixed on the top surface of the pressing plate.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention can adopt a modular design, integrates a corrugated pipe stop valve, a filter, a pressure reducing valve, a pressure measuring component at the front end and the like into a front module, integrates a corrugated pipe stop check valve, a pressure measuring component at the rear end, a safety valve and the like into a rear module, and has simpler and quicker assembly process;
2. the valves on the front module and the rear module are respectively integrated and are not connected with each other, so that leakage among valve connections is eliminated, and the defects that a plurality of connection points exist among valve groups formed by rigidly connecting and assembling valves independently and leakage hidden danger exists in each connection point are overcome;
3. the corrugated pipe stop valve, the corrugated pipe stop check valve and the corrugated pipe throttling stop valve all adopt corrugated pipe structures, and the corrugated pipe has a self-adjusting function on expansion with heat and contraction with cold, so that leakage between the valve body and the valve cover can be greatly reduced, and the service life of the valve body is effectively prolonged;
4. according to the invention, flange connection is reduced among the valves, the size in the length direction is reduced by about 1/4-1/3, and the installation space is effectively reduced;
5. the invention improves the steam use efficiency, reduces the energy consumption and is more environment-friendly;
6. when the safety valve is used, the first heat dissipation hole can be automatically opened according to the steam flow, the second heat dissipation hole with the corresponding degree can be automatically opened according to the steam temperature, convection air with different degrees can be formed by the first heat dissipation hole and the second heat dissipation hole, the larger the area of the formed convection air is, the reset spring can be effectively dissipated, the elastic force change caused by long-term high temperature can be prevented, the heat dissipation stability after different temperatures is effectively considered, the safety valve can be automatically closed to prevent dust from entering when the safety valve is idle, and the like.
The invention provides a steam pressure reducing valve group, which can adopt a modular design, effectively prevent leakage, optimize the size, effectively dissipate heat at high temperature, protect a spring to enable a safety valve to be in a long-term stable working state, and have better use effect.
Drawings
FIG. 1 is a schematic front sectional view of the overall structure of the present invention;
FIG. 2 is an enlarged view taken at A in FIG. 1 according to the present invention;
FIG. 3 is an enlarged view of the invention at B in FIG. 1;
FIG. 4 is a schematic view of a specific configuration of the load cell assembly of the present invention;
FIG. 5 is a schematic view of a first louvers of the present invention in a closed state;
FIG. 6 is a schematic view of the first louvers of the present invention in an open state;
FIG. 7 is a schematic view of a second louvers of the present invention in a closed state;
FIG. 8 is a schematic view of the second louvers of the present invention in an open state.
In the figure: 1 pipeline body, 101 front end inlet, 102 rear end outlet, 2 bellows stop valve, 3 pressure measuring assembly, 301 pressure valve, 302 pressure gauge, 303 radiator, 4 filter, 5 reducing valve, 6 bellows stop check valve, 601 bellows section, 7 safety valve, 701 outer shell, 702 operation chamber, 703 push rod, 704 sealing plate, 705 extrusion piece, 706 fixing piece, 707 reset spring, 708 first heat dissipation hole, 709 second heat dissipation hole, 710 guide groove, 711 safety valve outlet, 8 first connecting pipe, 9 bellows throttle stop valve, 10 second connecting pipe, 11 relief valve, 12 first baffle, 13 convex block, 14 upper connecting spring, 15 lower connecting spring, 16 first guide rail, 17 second baffle, 18 compression spring, 19 second guide rail, 20 connecting rope, 21 heat conducting pipe, 22 thermal expansion piece, 23, 24 mounting groove, 25 guide spring, 26 pressing plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in 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, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 8, the present invention provides a technical solution:
a vapor pressure relief valve stack comprising:
the pipeline comprises a pipeline body 1, a front end inlet 101 and a rear end outlet 102 are respectively arranged on two sides of the pipeline body 1, a bellows stop valve 2, a pressure reducing valve 5, a bellows stop check valve 6 and a safety valve 7 are sequentially arranged between the front end inlet 101 and the rear end outlet 102 along the direction from the front end inlet 101 to the rear end outlet, a main channel is formed, pressure measuring assemblies 3 are respectively arranged between the bellows stop valve 2 and the pressure reducing valve 5 and between the bellows stop check valve 6 and the safety valve 7, the former can be called as a front end pressure measuring assembly 3, the latter can be called as a rear end pressure measuring assembly 3, the two groups of pressure measuring assemblies 3 have the same structural composition and are used for measuring steam pressure in the pipeline body 1, the safety valve 7 is communicated with a bellows throttling stop valve 9 through a first connecting pipe 8, the bellows throttling stop valve 9 is communicated with the front end inlet 101 through a second connecting pipe 10, and a bypass pipeline is formed, when the safety valve 7 on the main channel is damaged, the corrugated pipe throttling stop valve 9 can be opened, so that the bypass pipeline is communicated, and the emergency function is realized.
The safety valve 7 comprises an outer shell 701, an operation cavity 702 is arranged in the outer shell 701, a push rod 703 is movably arranged in the operation cavity 702, a sealing plate 704 is fixedly arranged at the bottom of the push rod 703, when the steam pressure in the pipeline body 1 exceeds a preset value, the sealing plate 704 is jacked upwards, so that high-pressure steam can enter the operation cavity 702 of the safety valve 7 from the pipe cavity of the pipeline body 1 and finally flow out from an outlet 711 of the safety valve to be decompressed, the pipeline body 1 is effectively protected, an extrusion part 705 is fixedly sleeved on one section of the push rod 703 in the operation cavity 702, a fixing part 706 is fixedly arranged in the operation cavity 702, a return spring 707 is connected between the extrusion part 705 and the fixing part 706, the fixing part 706 is kept still when in use, the extrusion part 705 moves towards the direction close to the fixing part 706 to extrude the return spring 707, a first heat dissipation hole 708 and a second heat dissipation hole 709 are oppositely arranged on the outer shell 701, the shape and size of the first heat dissipation hole 708 and the second heat dissipation hole 709 are completely the same, and the two are arranged oppositely, so that when the first heat dissipation hole 708 and the second heat dissipation hole 709 are both opened, convection air can be passed through in the operation cavity 702, and the heat dissipation can be rapidly and effectively carried out on the reset spring 707 in the operation cavity 702, a safety valve outlet 711 is arranged in the safety valve 7, and the safety valve outlet 711 is communicated with the pipe cavity of the pipeline body 1, so that effective pressure relief protection can be realized.
The inner side of the operation cavity 702 close to the first heat dissipation hole 708 is provided with a first baffle 12, the first baffle 12 can cover the first heat dissipation hole 708 completely, dust is prevented from entering effectively, the protruding block 13 is fixedly arranged on the first baffle 12, the protruding block 13 can be shifted by the extrusion part 705 when the extrusion part moves, so that the first baffle 12 is driven to move, after the first baffle 12 moves, the area of the first heat dissipation hole 708, which is shielded by the extrusion part, can be changed accordingly, the heat dissipation effect is changed, and the upper side and the lower side of the first baffle 12 are connected to the inner wall of the operation cavity 702 through the upper connecting spring 14 and the lower connecting spring 15 respectively.
The inner side of the operation cavity 702 close to the second heat dissipation holes 709 is provided with a second baffle 17, the second baffle 17 can cover the second heat dissipation holes 709 completely, the effect of the second baffle is to effectively prevent dust from entering, the bottom of the second baffle 17 is connected to the outer wall of the outer shell 701 through a compression spring 18, the bottom of the second baffle 17 is fixedly provided with a connection rope 20, and the connection rope 20 is an inelastic rope.
Bellows is by check valve 6 includes bellows section 601, the embedding is provided with one section heat pipe 21 in bellows section 601, heat pipe 21 can be the heat conduction metal of excellent performance, alloy, heat conduction silica gel etc. for the heat that conduction bellows section 601 received, the fixed thermal expansion piece 22 that is provided with in the bottom of heat pipe 21, the fixed block 23 that is provided with in bellows is by check valve 6, mounting groove 24 has been seted up in the fixed block 23, it is provided with guide spring 25 to connect in the mounting groove 24, the last connection of guide spring 25 is provided with clamp plate 26, bellows section 601 is being heated the back, thermal expansion piece 22 can be heated the inflation and then push down clamp plate 26, connect the one end that rope 20 kept away from second baffle 17 and be fixed in on clamp plate 26, make the rope 20 of connecting this moment stimulate downwards.
Preferably, the pressure measuring assembly 3 comprises a pressure valve 301, a pressure gauge 302 is connected to the pressure valve 301, and the pressure gauge 302 can display the detected pressure value in real time.
Preferably, a radiator 303 is arranged between the pressure valve 301 and the pressure gauge 302, and the heat conducted by the high-temperature steam to the pressure valve 301 can be dissipated in time by the radiator 303, so that the pressure gauge 302 is prevented from being damaged by high temperature, and an effective cooling protection effect is achieved.
As an optimization, the filter 4 is communicated between the bellows stop valve 2 and the pressure reducing valve 5, the filter 4 can filter and intercept impurities in steam, and the situation that the subsequent equipment is polluted by the impurities to cause blockage of a valve and the like is avoided.
Preferably, the filter 4 is communicated with a relief valve 11, and the impurities intercepted in the filter 4 can be intensively cleaned by opening the relief valve 11, so that the use is more convenient.
Preferably, the first guide rail 16 is fixedly disposed in the operation chamber 702, and the first blocking plate 12 is provided with a matching sliding slot, so that the first blocking plate 12 can slide along the first guide rail 16, thereby ensuring that the movement of the first blocking plate 12 is more stable and does not deviate.
Preferably, the outer wall of the outer housing 701 is fixedly provided with a second guide rail 19, and the second baffle 17 is provided with a matching sliding groove, so that the second baffle 17 can slide along the second guide rail 19, thereby ensuring that the second baffle 17 moves more stably and does not deviate.
Preferably, the thermal expansion member 22 is a thermal expansion memory metal, and the memory metal is an alloy having a function of "memorizing" a shape, which is used since seventies of the last century, and has different shapes in a low temperature state and a high temperature state, so that the shape of the thermal expansion memory metal at the high temperature state can be previously set so as to be deformed after being heated and thus push the pressing plate 26 downward.
Preferably, the outer shell 701 is provided with a guide groove 710, and the connecting rope 20 passes through the guide groove 710 and then passes through a plurality of guide structures for limiting the rope passing route, and is finally fixed on the top surface of the pressing plate 26, so that the connecting rope 20 is in a tight state in the whole using process, and the effective transmission effect is ensured.
The first embodiment is as follows:
in use, the front inlet 101 of the pipe body 1 is connected to high pressure steam, which, in this embodiment, the pressure of the introduced steam is 2.45MPa, the corrugated pipe throttling stop valve 9 is in a closed state at the moment, the high-pressure steam passes through the corrugated pipe stop valve 2, the reducing valve 5 and the corrugated pipe stop check valve 6 in sequence, in the process, the filter 4 effectively filters and intercepts impurities in the high-pressure steam to avoid the impurities from polluting subsequent valve equipment, two groups of pressure measuring assemblies 3 between the bellows stop valve 2 and the pressure reducing valve 5 and between the bellows stop check valve 6 and the safety valve 7 are in working states, real-time monitoring pressure values are displayed through the pressure gauge 302, then, the pressure of a system pipeline medium is reduced to the pressure required by a user, therefore, the steam can be directly discharged from the rear end outlet 102, and the pressure value of the discharged steam is between 0.6 and 1.6 MPa.
Example two:
the embodiment is similar to the embodiment, and the only difference is that if the pressure value of the steam introduced into the pipeline body 1 exceeds a predetermined value, in the embodiment, the predetermined value is 1.1 times of the steam pressure of the front end inlet 101, when the pressure value exceeds the predetermined value, the safety valve 7 automatically jumps to open the communication, and at the moment, the high-pressure steam in the pipeline body 1 can be discharged from the safety valve outlet 711, so that the pressure is automatically released, and the system pipeline is safely protected.
Example three:
in the present embodiment, a structure for dissipating heat from the return spring 707 in the safety valve 7 is added to the second embodiment, specifically: if the high-pressure steam passing through the pipeline body 1 is in a high-temperature state, on one hand, when the high-temperature steam passes through the valve plate of the corrugated pipe stop check valve 6, the valve plate can conduct heat to the corrugated pipe section 601, so that the heat conduction pipe 21 is heated, and the thermal expansion piece 22 is gradually heated, the thermal expansion piece 22 after being heated deforms, the pressing plate 26 is pushed downwards, the guide spring 25 at this time is in a compressed state, the connection rope 20 is also pulled downwards, and the other end of the connection rope 20 is connected to the second baffle 17, so that the second baffle 17 is pulled downwards, the second heat dissipation holes 709 are gradually exposed, and the higher the temperature is, the greater the deformation degree of the thermal expansion piece 22 is, and the larger the exposure area of the second heat dissipation holes 709 is; on the other hand, high-temperature steam can directly contact with the sealing plate 704, and through the conduction of the push rod 703 and the extrusion part 705, the temperature of the return spring 707 can be gradually raised, but after the return spring 707 is heated for a long time, the elastic force of the return spring 707 can be changed, which affects the stability and accuracy of the setting pressure, and the use error can be gradually increased, therefore, in this embodiment, the extrusion part 705 can move to push the convex block 13 when extruding the return spring 707, the convex block 13 drives the first baffle 12 to move, so that the first heat dissipation hole 708 is gradually exposed, the larger the flow of the high-temperature steam is, the higher the heat accumulation caused by continuous heat transfer is, but the larger the exposed area of the first heat dissipation hole 708 is, automatic adaptation is realized, and therefore, convection air can be passed between the first heat dissipation hole 708 and the second heat dissipation hole 709, so as to quickly cool down the return spring 707 in the operation cavity 702, which is more intelligent, firstly, the second heat dissipation holes 709 can be opened in different degrees according to different temperatures, and the first heat dissipation holes 708 can be opened in different degrees according to steam flow, so that the intelligent operation is realized; secondly, the opening degrees of the first heat dissipation holes 708 and the second heat dissipation holes 709 are different, so that the ventilation areas for convection air are different, and heat dissipation of different degrees can be realized, so that the waste heat state of steam is more stable after ventilation; thirdly, when steam temperature is not high, first louvre 708 and second louvre 709 can be stopped by first baffle 12, second baffle 17 automatically and close, prevent that the dust from getting into the inside of relief valve 7, etc. and compromise of above-mentioned beneficial effect has been accomplished to this embodiment, can realize dynamic balance, and the result of use is better.
Example four:
in this embodiment, if relief pressure valve 5 became invalid, then close bellows stop valve 2, bellows stop check valve 6, open bellows throttle stop valve 9, then communicate front end import 101 of pipeline body 1 in high-pressure steam, high-pressure steam this moment gets into bellows throttle stop valve 9 through second takeover 10, and the rethread first takeover 8 is discharged from rear end outlet 102 at last, has emergent function for steam pressure reducing valve group can continue to maintain the use.
Example five:
the embodiment is similar to the embodiment, and the only difference is that if the pressure value of the steam introduced into the pipeline body 1 exceeds a predetermined value, when the high-pressure steam flows from the first connecting pipe to the rear end outlet 102, the safety valve 7 automatically jumps to be communicated and opened, and at the moment, the high-pressure steam in the pipeline body 1 can be discharged from the safety valve outlet 711, so that the pressure is automatically relieved, the system pipeline is safely protected, and the device can effectively reduce the pressure and prevent explosion even in an emergency state, and is safer to use.
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 (9)
1. A steam pressure relief valve block, comprising:
the pipeline comprises a pipeline body (1), wherein a front end inlet (101) and a rear end outlet (102) are respectively arranged on two sides of the pipeline body (1), a corrugated pipe stop valve (2), a pressure reducing valve (5), a corrugated pipe stop check valve (6) and a safety valve (7) are sequentially arranged between the front end inlet (101) and the rear end outlet (102) along the direction close to and far away from the front end inlet (101), pressure measuring components (3) are respectively arranged between the corrugated pipe stop valve (2) and the pressure reducing valve (5) and between the corrugated pipe stop check valve (6) and the safety valve (7), the safety valve (7) is communicated with a corrugated pipe throttling stop valve (9) through a first connecting pipe (8), and the corrugated pipe throttling stop valve (9) is communicated with the front end inlet (101) through a second connecting pipe (10);
the safety valve (7) comprises an outer shell (701), an operation cavity (702) is formed in the outer shell (701), a push rod (703) is movably arranged in the operation cavity (702), a sealing plate (704) is fixedly arranged at the bottom of the push rod (703), an extrusion part (705) is fixedly sleeved on one section of the push rod (703) positioned in the operation cavity (702), a fixing part (706) is fixedly arranged in the operation cavity (702), a return spring (707) is connected between the extrusion part (705) and the fixing part (706), a first heat dissipation hole (708) and a second heat dissipation hole (709) are oppositely formed in the outer shell (701), a safety valve outlet (711) is formed in the safety valve (7), and the safety valve outlet (711) is communicated with a pipe cavity of the pipeline body (1);
a first baffle (12) is arranged on the inner side of the operation cavity (702) close to the first heat dissipation hole (708), a protruding block (13) is fixedly arranged on the first baffle (12), so that the protruding block (13) can be pushed by the extrusion part (705) when the extrusion part moves to drive the first baffle (12) to move, and the upper side and the lower side of the first baffle (12) are respectively connected to the inner wall of the operation cavity (702) through an upper connecting spring (14) and a lower connecting spring (15);
a second baffle (17) is arranged on the inner side, close to the second heat dissipation hole (709), of the operation cavity (702), the bottom of the second baffle (17) is connected to the outer wall of the outer shell (701) through a compression spring (18), a connecting rope (20) is fixedly arranged at the bottom of the second baffle (17), and the connecting rope (20) is an inelastic rope;
bellows is by check valve (6) including bellows section (601), the embedding is provided with one section heat pipe (21) in bellows section (601), the fixed thermal expansion spare (22) that is provided with in bottom of heat pipe (21), bellows is by fixed being provided with fixed block (23) in check valve (6), mounting groove (24) have been seted up in fixed block (23), it is provided with guide spring (25) to connect in mounting groove (24), the connection is provided with clamp plate (26) on guide spring (25), bellows section (601) is being heated the back, and thermal expansion spare (22) can be heated the inflation and then promote clamp plate (26) downwards, connect the one end that second baffle (17) were kept away from in rope (20) and be fixed in on clamp plate (26).
2. A steam pressure relief valve pack as claimed in claim 1, wherein: the pressure measuring assembly (3) comprises a pressure valve (301), and a pressure gauge (302) is arranged on the pressure valve (301) in a communicated mode.
3. A steam pressure relief valve pack as claimed in claim 2, wherein: and a radiator (303) is arranged between the pressure valve (301) and the pressure gauge (302).
4. A steam pressure relief valve pack as claimed in claim 1, wherein: and a filter (4) is communicated between the corrugated pipe stop valve (2) and the pressure reducing valve (5).
5. A steam pressure relief valve pack according to claim 4, wherein: and a discharge valve (11) is communicated with the filter (4).
6. A steam pressure relief valve pack as claimed in claim 1, wherein: a first guide rail (16) is fixedly arranged in the operation cavity (702), and a matched sliding groove is formed in the first baffle plate (12) and can slide along the first guide rail (16).
7. A steam pressure relief valve pack as claimed in claim 1, wherein: a second guide rail (19) is fixedly arranged on the outer wall of the outer shell (701), and a sliding groove matched with the second baffle (17) is formed in the second baffle, so that the second baffle can slide along the second guide rail (19).
8. A steam pressure relief valve pack as claimed in claim 1, wherein: the thermal expansion member (22) is a thermal expansion memory metal.
9. A steam pressure relief valve pack as claimed in claim 1, wherein: a guide groove (710) is formed in the outer shell (701), and after the connecting rope (20) penetrates through the guide groove (710), the connecting rope passes through a plurality of guide structures for limiting rope passing routes and is finally fixed on the top surface of the pressing plate (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111173157.0A CN113847552A (en) | 2021-10-08 | 2021-10-08 | Steam pressure reducing valve group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111173157.0A CN113847552A (en) | 2021-10-08 | 2021-10-08 | Steam pressure reducing valve group |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113847552A true CN113847552A (en) | 2021-12-28 |
Family
ID=78977625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111173157.0A Withdrawn CN113847552A (en) | 2021-10-08 | 2021-10-08 | Steam pressure reducing valve group |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113847552A (en) |
-
2021
- 2021-10-08 CN CN202111173157.0A patent/CN113847552A/en not_active Withdrawn
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Application publication date: 20211228 |
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| WW01 | Invention patent application withdrawn after publication |