CN204784783U - Trap case subassembly and trap - Google Patents
Trap case subassembly and trap Download PDFInfo
- Publication number
- CN204784783U CN204784783U CN201520553678.2U CN201520553678U CN204784783U CN 204784783 U CN204784783 U CN 204784783U CN 201520553678 U CN201520553678 U CN 201520553678U CN 204784783 U CN204784783 U CN 204784783U
- Authority
- CN
- China
- Prior art keywords
- valve
- packing
- seat
- spool
- valve plug
- 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.)
- Withdrawn - After Issue
Links
Abstract
The utility model discloses a case subassembly, especially a high -pressure trap case subassembly. The utility model provides an it receives the trap case subassembly that erodees to alleviate sealed face, which comprises a valve core and a valve seat, the whole annular structure that is big -end -up of disk seat, the upper portion of anchor ring is conical sealed face in the disk seat, and the lower part of anchor ring is the anchor ring in the disk seat, the case is cylindric, and the case can cooperate with the sealed face seal of disk seat, still include cylindric valve plug, the valve plug sets up in case bottom and coaxial with the case, the size of valve plug is matchd with the anchor ring of disk seat, when the case cooperated with valve seat seal, the valve plug formed one buffer space in inserting the anchor ring of disk seat between case, disk seat and the valve plug, in addition, also have one annular groove on the valve plug. The utility model discloses a primary seal face can not receive strong erodeing, and its life -span is more than traditional valve.
Description
Technical field
The utility model relates to a kind of mangetic core assembly, especially a kind of high pressure drain valve mangetic core assembly.In addition, the utility model also relates to a kind of drain valve, especially a kind of high pressure drain valve.
Background technique
Drain valve is the valve getting rid of water of condensation for steam line; At present; leak in the valve ubiquity used in power station steam pipe system is serious; the problem that working life is short; its structure is common cut-out structure; only considered the break-in facility of valve itself, do not have reducing pressure by regulating flow structural measure to protect, have ignored the problems such as cavitation, cavitation, vibration, noise; cause valves leakage serious, affect unit generation efficiency.
The drain valve of current employing, it utilizes being sealed and matched between spool and valve seat to realize sealing, but said structure is under the environment of high pressure, when the moment that valve is opening and closing, Flow area is little especially, velocity of medium is high and pressure sharply declines, sealing surface is subject to washing away of high-velocity fluid, and produces cavitation phenomenons, causes sealing surface blow loss, pole causes valve to fit badly, and leaks in producing.
Model utility content
Technical problem to be solved in the utility model is to provide a kind of valve plug of drain valve assembly alleviating sealing surface and washed away.
Described valve seat entirety is up big and down small ring structure, and the top of valve seat inner ring surface is conical sealing surface, and the bottom of valve seat inner ring surface is toroidal surface;
Described spool is cylindric, and the sealing surface of spool and valve seat is sealed and matched;
Also comprise columned valve plug, described valve plug to be arranged on bottom spool and coaxial with spool, and the size of described valve plug is mated with the toroidal surface of valve seat;
When spool coordinates with valve base sealing, valve plug inserts in the toroidal surface of valve seat, spool, the buffer space that between valve seat and valve plug, formation one is annular.
Further, described valve plug is provided with at least one annular groove, when spool coordinates with valve base sealing, all annular grooves all can enter in the toroidal surface of valve seat.
Further, the cross section of described buffer space is right-angled triangle.
Further, the sealed end chamfering of described spool forms conical sealing inclined-plane, when spool coordinates with valve base sealing, complements each other to form primary sealing area at the sealing surface of sealing inclined-plane and valve seat.
Further, the bottom of described valve plug is conical.
Another technical problem that will solve of the utility model is to provide the drain valve that a kind of light sealing surface is washed away.
The drain valve that the utility model provides, comprise valve body, mangetic core assembly, valve rod and packing seal structure, be provided with valve pocket, import in described valve body, export and be communicated to the packing cavity of valve pocket, described mangetic core assembly is arranged in valve body, described packing seal structure is arranged in the packing cavity of valve body, and described valve rod penetrates in valve pocket by packing seal structure; Described mangetic core assembly adopts aforesaid valve plug of drain valve assembly.
Be further, described packing seal structure comprises filler packing, filler pressing sleeve, Gland and Packing seat, described valve body is provided with packing cavity, described Packing seat, filler packing, filler pressing sleeve, Gland are arranged in packing cavity from down to up successively, and described valve rod enters valve pocket through Gland, filler pressing sleeve, filler packing and Packing seat; Gland, filler pressing sleeve, filler packing, Packing seat are pressed in packing cavity by bolt, and described Packing seat in a tubular form, the inwall of Packing seat offers at least two annular grooves vertically.
The beneficial effects of the utility model are: by arranging up big and down small valve seat, make the primary sealing area of spool and valve seat be positioned at the upper cone shape place of valve seat, away from the valve seat bottom toroidal surface as medium channel; Meanwhile, due to the existence of valve plug, spool, the buffer space that between valve seat and valve plug, formation one is annular, add one annular groove on valve plug, forms secondary dilatation step-down space; When spool is just opened, primary sealing area is first opened, and first high-pressure medium enters buffer space, then in the throttling through valve plug, makes primary sealing area only have a small amount of medium to pass through; When spool is opened completely, valve plug departs from valve seat bottom toroidal surface completely, and now primary sealing area is away from medium channel, and no matter be therefore which kind of state, primary sealing area of the present utility model all can not be subject to strong washing away, and its life-span is much larger than traditional valve.
Accompanying drawing explanation
Fig. 1 is the structural representation of drain valve;
Schematic diagram when Fig. 2 is mangetic core assembly complete shut-down;
Schematic diagram when Fig. 3 is mangetic core assembly throttle;
Schematic diagram when Fig. 4 is mangetic core assembly standard-sized sheet;
Fig. 5 is the schematic diagram of packing seal structure;
Component, position and numbering in figure: spool 1, valve seat 2, valve plug 3, buffer space 4, valve body 5, valve rod 6, packing seal structure 7, annular groove 8, sealing surface 11, toroidal surface 12, filler packing 71, filler pressing sleeve 72, Gland 73, Packing seat 74.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As shown in Figure 1, the utility model comprises spool 1 and valve seat 2,
Described valve seat 2 entirety is up big and down small ring structure, and the top of valve seat 2 inner ring surface is conical sealing surface 11, and the bottom of valve seat 2 inner ring surface is toroidal surface 12, and toroidal surface 12 is coaxially arranged with the medium channel in valve pocket;
Described spool 1 is cylindric, and spool 1 can be sealed and matched with the sealing surface 11 of valve seat 2;
Also comprise columned valve plug 3, described valve plug 3 to be arranged on bottom spool 1 and coaxial with spool 1, and the size of described valve plug 3 is mated with the toroidal surface 12 of valve seat 2, and valve plug 3 can form the effect of throttling after being inserted into toroidal surface 12 and medium channel;
When spool 1 is sealed and matched with valve seat 2, valve plug 3 inserts in the toroidal surface 12 of valve seat 2, spool 1, the buffer space 4 that between valve seat 2 and valve plug 3, formation one is annular.
Said structure is as follows in the service condition of reality:
MEDIA FLOW is to being high in and low out.
State shown in Fig. 2 is full off state, and spool 1 is sealed and matched with the sealing surface 11 of valve seat 2, spool 1, the buffer space 4 that between valve seat 2 and valve plug 3, formation one is annular.
State shown in Fig. 3 is throttle, namely when spool 1 is just opened, primary sealing area is first opened, high-pressure medium flows into dilatation in buffer space 4, step-down, valve plug 3 does not leave toroidal surface 12 simultaneously, because valve plug 3 can play the effect of throttling, makes the high-pressure medium of the primary sealing area flowing through spool 1 and valve seat 2 few, greatly reduce medium washing away primary sealing area, the life-span of mangetic core assembly is greatly improved.
State shown in Fig. 4 is full-gear, now valve plug 3 departs from toroidal surface 12 completely, the sealing surface of valve seat is positioned at the upper cone shape place of valve seat, away from the valve seat bottom toroidal surface 12 as medium channel, the sealing surface of spool is also away from medium channel, and the medium channel place that flow velocity is the fastest in valve pocket exactly, so, primary sealing area it also avoid larger washing away, and the life-span of mangetic core assembly is improved greatly.
In order to realize multilevel decompression, as shown in Figure 2, described valve plug 3 is provided with at least one annular groove 8, when spool 1 is sealed and matched with valve seat 2, all annular grooves all can enter in the toroidal surface 12 of valve seat 2.When valve complete shut-down is without leakage current, valve plug 3 is effect not; When primary sealing area fits badly leakage current, first leakage enters buffer space 4, realize one-level dilatation step-down, then cylindrical valve plug 3 carries out choked flow, the two-step throttle groove that annular groove 8 simultaneously on valve plug 3 is formed, by throttling, dilatation, step-down, stop leakage current amount to expand further, valve sealing face is not washed away further.This structure can make primary sealing area have during minor issue and avoid continuous erosion and leakage, and the working life of whole valve is further improved.In view of limited space in valve pocket, general annular groove is arranged together.
Concrete, as shown in Figure 2, the cross section of described buffer space 4 is right-angled triangle.The right angle of right-angled triangle is at the intersection of spool 1 with valve plug 3.The benefit of this right-angled triangle is as follows, and high-pressure medium enters buffer space 4 along hypotenuse, under the guiding of right angle side, form convolution, thus reaches the object of convolution energy dissipating, has certain antihypertensive effect.
Concrete, as shown in Figures 2 to 4, the sealed end chamfering of described spool 1 forms conical sealing inclined-plane, when spool 1 is sealed and matched with valve seat 2, complements each other to form primary sealing area at the sealing surface 11 of sealing inclined-plane and valve seat 2.
In order to realize the function led, as shown in Figure 2, the bottom of described valve plug 3 is conical.The conical bottom of valve plug 3 can realize guide function, is convenient to valve plug 3 and is inserted in the toroidal surface 12 of valve seat 2.
The structure that aforesaid mangetic core assembly applies in drain valve is shown in Figure 1, comprise valve body 5, mangetic core assembly, valve rod 6 and packing seal structure 7, be provided with valve pocket, import in described valve body 5, export and be communicated to the packing cavity of valve pocket, described mangetic core assembly is arranged in valve body 5, described packing seal structure 7 is arranged in the packing cavity of valve body 5, and described valve rod 6 penetrates in valve pocket by packing seal structure 7; Spool 1 is connected with the bottom of valve rod 6, can be controlled the motion of spool 1 by the motion of valve rod 6, and it is interior and corresponding with outlet that valve seat 2 is placed in valve pocket.The working principle of mangetic core assembly and effect are see aforementioned, and other working principle of valve is identical with conventional drain valve.
In order to increase the sealing reliability of valve rod 6 and filler packing, as shown in Figure 5, described packing seal structure 7 comprises filler packing 71, filler pressing sleeve 72, Gland 73 and Packing seat 74, described valve body is provided with packing cavity, described Packing seat 74, filler packing 71, filler pressing sleeve 72, Gland 73 are arranged in packing cavity from down to up successively, and described valve rod 6 enters valve pocket through Gland 73, filler pressing sleeve 72, filler packing 71 and Packing seat 74; Finally, Gland 73, filler pressing sleeve 72, filler packing 73, Packing seat 74 are pressed in packing cavity tightly by bolt.Described Packing seat 74 in a tubular form, the inwall of Packing seat 74 offers at least two annular grooves vertically.Filler packing 71, filler pressing sleeve 72, Gland 73 are with traditional packing seal and indifference, it makes Gland 73 apply pressure by bolt thus makes filler pressing sleeve 72 compress filler packing 71, filler packing 71 highly diminishes, radius becomes large, thus can regulate the sealing effect of filler packing 71.The material of filler packing 71 is generally graphite.
Valve pressure is higher, and the tight power needed for filler packing 71 is larger, and medium is more to washing away of filler packing 71, and valve rod 6 is also more with the wearing and tearing of filler packing 71; And the utility model employs Packing seat 74, when MEDIA FLOW is through Packing seat 74 first annular grooves, through throttling, speedup, dilatation, completes a reducing pressure by regulating flow process, and then repeats previous process; When MEDIA FLOW is through Packing seat 74 second annular grooves, complete again a pressure reduction, through multistage throttle step-down, during arrival filler packing 71, pressure medium has reduced a lot, so just alleviate the tight power needed for filler packing 71, decrease medium to wash away filler packing 71, thus extend filler working life.
Claims (7)
1. valve plug of drain valve assembly, comprises spool (1) and valve seat (2), it is characterized in that:
Described valve seat (2) entirety is up big and down small ring structure, and the top of valve seat (2) inner ring surface is conical sealing surface (11), and the bottom of valve seat (2) inner ring surface is toroidal surface (12);
Described spool (1) is for cylindric, and spool (1) is sealed and matched with the sealing surface (11) of valve seat (2);
Also comprise columned valve plug (3), described valve plug (3) be arranged on spool (1) bottom and coaxial with spool (1), the size of described valve plug (3) is mated with the toroidal surface (12) of valve seat (2);
When spool (1) is sealed and matched with valve seat (2), valve plug (3) inserts in the toroidal surface (12) of valve seat (2), spool (1), the buffer space (4) that between valve seat (2) and valve plug (3), formation one is annular.
2. valve plug of drain valve assembly as claimed in claim 1, it is characterized in that: described valve plug (3) is provided with at least one annular groove (8), when spool (1) is sealed and matched with valve seat (2), all annular grooves (8) all can enter in the toroidal surface (12) of valve seat (2).
3. valve plug of drain valve assembly as claimed in claim 1, is characterized in that: the cross section of described buffer space (4) is right-angled triangle.
4. valve plug of drain valve assembly as claimed in claim 1, it is characterized in that: the sealed end chamfering of described spool (1) forms conical sealing inclined-plane, when spool (1) is sealed and matched with valve seat (2), complement each other to form primary sealing area at the sealing surface (11) of sealing inclined-plane and valve seat (2).
5. valve plug of drain valve assembly as claimed in claim 1, is characterized in that: the bottom of described valve plug (3) is for conical.
6. drain valve, comprise valve body (5), mangetic core assembly, valve rod (6) and packing seal structure (7), be provided with valve pocket, import in described valve body (5), export and be communicated to the packing cavity of valve pocket, described mangetic core assembly is arranged in valve body (5), described packing seal structure (7) is arranged in the packing cavity of valve body (5), and described valve rod (6) penetrates in valve pocket by packing seal structure (7); It is characterized in that: described mangetic core assembly adopts the valve plug of drain valve assembly as described in claim as arbitrary in claim 1 to 5.
7. drain valve as claimed in claim 6, it is characterized in that: described packing seal structure (7) comprises filler packing (71), filler pressing sleeve (72), Gland (73) and Packing seat (74), described valve body is provided with packing cavity, described Packing seat (74), filler packing (71), filler pressing sleeve (72), Gland (73) is arranged in packing cavity from down to up successively, described valve rod (6) is through Gland (73), filler pressing sleeve (72), filler packing (71) and Packing seat (74) enter valve pocket, Gland, filler pressing sleeve, filler packing, Packing seat are pressed in packing cavity by bolt, and described Packing seat (74) in a tubular form, the inwall of Packing seat (74) offers vertically at least two annular grooves (8a).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520553678.2U CN204784783U (en) | 2015-07-28 | 2015-07-28 | Trap case subassembly and trap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520553678.2U CN204784783U (en) | 2015-07-28 | 2015-07-28 | Trap case subassembly and trap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204784783U true CN204784783U (en) | 2015-11-18 |
Family
ID=54524833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520553678.2U Withdrawn - After Issue CN204784783U (en) | 2015-07-28 | 2015-07-28 | Trap case subassembly and trap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204784783U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104989834A (en) * | 2015-07-28 | 2015-10-21 | 王庭铨 | Valve element component of drain valve and drain valve |
-
2015
- 2015-07-28 CN CN201520553678.2U patent/CN204784783U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104989834A (en) * | 2015-07-28 | 2015-10-21 | 王庭铨 | Valve element component of drain valve and drain valve |
| CN104989834B (en) * | 2015-07-28 | 2018-01-16 | 王庭铨 | Valve plug of drain valve component and drain valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203626872U (en) | Plug-in type metal ring loop line hard sealing reversing valve | |
| CN204784783U (en) | Trap case subassembly and trap | |
| CN203906910U (en) | Axial-flow type ball check valve | |
| CN203146840U (en) | Electromagnetic steam stop valve | |
| CN204345034U (en) | A kind of compressed natural gas guide electromagnetic valve | |
| CN106837291B (en) | Oil jacket annulus gas-liquid separation device in non-conventional gas well head | |
| CN204533740U (en) | A kind of Double-working-condition drinking machine electromagnetic valve | |
| CN204083312U (en) | A kind of temperature-decreased pressure reducer improveing spool | |
| CN204312017U (en) | A kind of blanking plug of blocking gas production wellhead gas passage with pressure | |
| CN204004645U (en) | Soft seal sleeve adjusting valve | |
| CN104989834A (en) | Valve element component of drain valve and drain valve | |
| CN203926925U (en) | Low pressure loss water sealed tank | |
| CN108166956B (en) | Nozzle-replaceable throttle and application method thereof | |
| CN204114259U (en) | There is the reduction valve of valve closing function | |
| CN203571203U (en) | High-pressure difference regulation valve | |
| CN203560493U (en) | High-performance all-welding fixing ball valve | |
| CN204828912U (en) | Valve packing structure | |
| CN207034318U (en) | A kind of Anti-leakage type flow control valve | |
| CN204692715U (en) | A kind of gas electromagnetic valve double spool assembly | |
| CN207178788U (en) | Magnetic Control gate valve with anti-interference function | |
| CN203453497U (en) | Inflation valve | |
| CN204828681U (en) | Cooling right -angle type stop valve of industry | |
| CN204610853U (en) | Anti-cavitation multistage throttle control valve | |
| CN205896236U (en) | Novel portable expansion valve | |
| CN203940002U (en) | A kind of high-pressure low-noise cage type regulating valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20151118 Effective date of abandoning: 20180116 |