CN205026369U - Bimetallic strip trap - Google Patents
Bimetallic strip trap Download PDFInfo
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- CN205026369U CN205026369U CN201520785234.1U CN201520785234U CN205026369U CN 205026369 U CN205026369 U CN 205026369U CN 201520785234 U CN201520785234 U CN 201520785234U CN 205026369 U CN205026369 U CN 205026369U
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- bimetallic strip
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- valve
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Abstract
The utility model relates to a bimetallic strip trap, its characterized in that: inside being equipped with of valve gap is hindered vapour drainage device and is filtered the otter board, hinders vapour exhaust apparatus and includes disk seat, case and establish the bimetallic strip group on the disk seat, and the back is mated by two liang at least 2 layers bimetallic strip by bimetallic strip group, be fixed in the disk seat through locating pin and upper and lower clamp plate on, the one end of case sets up in the disk seat, the other end passes behind holding down plate, bimetallic strip group and the top board fixedly through nut and top board in proper order. When the medium temperature rising, rhombus bimetallic strip produces heat altered shape and then produces hot thrust, because its special polygon shape, bimetallic strip warp thrust according to certain order production for bimetallic strip's working curve approaches the steam pressure temperature curve of saturation, and the drainage temperature also more is close saturation temperature, and this had both solved the unstable problem of the big discharge capacity of the drainage in -process difference in temperature, had improved the drainage temperature again, had practiced thrift the energy.
Description
Technical field
The utility model relates to the technical field of valve pipe, specifically a kind of decelerator with bimetallic strips.
Background technique
Decelerator with bimetallic strips is the class heat static force type drain valve on steam pipework, and it utilizes the sensitive characteristic of bimetallic element, relies on the change of medium temperature, generation picks power, compare with pressure medium, and then control the keying of Sealing, reach automatic block steam and drain water object.
Be not afraid of water attack because this valve has, high pressure resistant, volume is little, lightweight, can automatic air exhausting, and the advantage such as all can be installed in arbitrary position, is widely used in the main steam header road of electric power, chemical industry, medicine and other fields.
Bimetal elements steam trap on domestic market, overall performance is not good, and mainly there are the following problems: at certain pressure of steam, and the vapo(u)rous temperature difference under Temperature at discharging condensate and this pressure is large, and namely Subcoold temperature is large; And in whole pressure operating range, Temperature at discharging condensate and vapo(u)rous temperature gap different; In drainage procedure, oversize for transient time to maximum pump discharge from micro-discharge capacity, action is seriously delayed.These factors make the unstable properties of the block steam and drain water of existing decelerator with bimetallic strips, and energy-saving efficiency reduces.
Above shortcoming constrains the further promotion and application of this valve, and how to reduce Subcoold temperature delayed with solution draining action, stablize the drainage performance of valve, improving energy-saving efficiency is the problem that engineers and technicians need solve.
Summary of the invention
The purpose of this utility model is the decelerator with bimetallic strips providing a kind of improvement, and it can overcome the some shortcomings that in prior art, the draining temperature difference is large and draining action is delayed.
To achieve these goals, the technical solution of the utility model is: a kind of decelerator with bimetallic strips, it mainly comprises valve body and valve gap, it is characterized in that: valve gap inside is provided with block steam and drain water device and screen pack, described resistance vapour venting gas appliance comprises valve seat, spool and the bimetallic strip group be located on valve seat, after bimetallic strip group is matched between two by least 2 layers of bimetallic strip, by locating stud and upper, press table is fixed on valve seat, one end of spool is arranged in valve seat, the other end is successively through press table, fixed by nut and top board after bimetallic strip group and top board,
The outer wall of valve seat is provided with outside thread, and valve body center is provided with valve seat mounting hole, and the inwall of valve seat mounting hole is provided with the internal thread matched with outside thread, is provided with screen pack between valve body and valve gap, and described screen pack surrounding covers admission annular pass.
Further, described bimetallic strip is made up of high expanding layer and low bulk layer, expanding layer adopts Ni19Cr11 stainless steel high temperature material, and low bulk layer adopts Ni42 stainless steel high temperature material, and bimetallic strip is processed into diamond shaped, water caltrop place is provided with chamfering, be provided with spool bore in the middle of rhombus, long axis direction, spool bore both sides is arranged with positioning pin hole, bimetallic strip two panels one group, low bulk layer is relative, is provided with partition between two panels bimetallic strip.
During use, when medium temperature raises, rhombus bimetallic strip produces thermal distortion and then generation picks power, due to the polygonal shape that it is special, bimetallic strip produces deforming thrust in sequence, makes the working curve of bimetallic strip close to saturated vapor pressure temperature curve, Temperature at discharging condensate is also closer to saturation temperature, this had both solved the problem of temperature difference huge discharge instability in drainage procedure, turn improved Temperature at discharging condensate, had saved the energy.Simultaneously, due to time the design of step surface that increases of spool afterbody and the runner design of valve seat taper, the active force of medium to valve gap is multiplied, and the unlatching of valve seat is rapider, overcome valve draining oversize for transient time to maximum pump discharge from micro-discharge capacity, the shortcoming that action is seriously delayed.In addition, valve design becomes hexagonal flange, and dove-tail form supports, and arc transition, had both added the rigidity of valve body, ensure that the intensity of valve body, in turn enhanced the overall aesthetics of valve.By the enforcement of above technology, the performance of valve has obvious progress compared with the valve of the same type of prior art.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model one embodiment.
Fig. 2 is the structural representation of the utility model seat valve.
Fig. 3 is the structure for amplifying schematic diagram in A portion in Fig. 1.
Fig. 4 is the structural representation of the utility model bimetallic strip.
Fig. 5 is the structural representation of the utility model valve body.
Embodiment
Below in conjunction with drawings and Examples, the utility model will be further described.
Label in each accompanying drawing is expressed as follows:
1 valve body, 2 valve bonnet seal pads, 3 valve gaps, 4 attachment bolts, 5 bimetallic strip groups, 6 top boards, 7 nuts, 8 locating studs, 9 press tables, 10 valve seats, 11 screen packs, 12 spools.
A kind of decelerator with bimetallic strips described in the utility model, it mainly comprises valve body and valve gap, its difference with the prior art is: valve gap inside is provided with block steam and drain water device and screen pack, described resistance vapour venting gas appliance comprises valve seat, spool and is located at the bimetallic strip group on valve seat, after bimetallic strip group is matched between two by least 2 layers of bimetallic strip, be fixed on valve seat by locating stud and upper and lower pressing plate, one end of spool is arranged in valve seat, and the other end is fixed by nut and top board through after press table, bimetallic strip group and top board successively; The outer wall of valve seat is provided with outside thread, and valve body center is provided with valve seat mounting hole, and the inwall of valve seat mounting hole is provided with the internal thread matched with outside thread, is provided with screen pack between valve body and valve gap, and described screen pack surrounding covers admission annular pass.
Described bimetallic strip is made up of high expanding layer and low bulk layer, expanding layer adopts Ni19Cr11 stainless steel high temperature material, low bulk layer adopts Ni42 stainless steel high temperature material, bimetallic strip is processed into diamond shaped, and water caltrop place is provided with chamfering, is provided with spool bore in the middle of rhombus, long axis direction, spool bore both sides is arranged with positioning pin hole, bimetallic strip two panels one group, low bulk layer is relative, is provided with partition between two panels bimetallic strip.
Described spool is stainless steel, and spool top is provided with screw thread, middle part necking down, is hemisphere type sealing surface below neck, sphere cure process HRC42, and spool bottom is provided with step surface, and the bottom of spool is provided with processing technology hole.
Be processed into hexangle type above described valve seat, middle part is provided with v thread, and optical axis section is processed in bottom;
Be provided with shoulder hole in the middle of valve seat, upper hole is the first cylinder straight hole, and centre is the second cylinder straight hole, and bottom is 25 ° of taper holes, and the diameter of the first cylinder straight hole is greater than the diameter of the second cylinder straight hole; The bilateral symmetry of valve seat upper-end surface center hole is distributed with positioning pin hole, and top hexagon head side is provided with through hole, through hole and center hole through.
Described valve body is F22 forging, and valve body establishes inlet/outlet runner, and inlet/outlet runner is SOCKET WELDING step hole, the upper plane of valve body is hexangle type, and center is provided with tapped hole, and the surrounding of tapped hole is evenly equipped with six scyewed joint holes, tapped hole communicates with outlet flow, is arranged with circular groove outside center hole.
In enforcement, SOCKET WELDING steam decelerator with bimetallic strips (Fig. 1) described in the utility model, it mainly comprises valve body 1, valve gap 3, bimetallic strip 5, valve seat 10, spool 12 etc., it is characterized in that: above valve body 1, be provided with the valve gap 3 that bolt 4 connects, graphite valve bonnet seal pad 2 is pressed with by male and fomale(M&F) between valve gap 3 valve body 1, valve gap 3 inside is provided with block steam and drain water device and screen pack 11, described resistance vapour venting gas appliance is by valve seat 10, spool 12, locating stud 8, top board 6, press table 9, bimetallic strip 5 and nut 7 form, valve seat 10 is by being threaded in the middle part of valve body 1 in tapped hole, plane sets position pin 8 on valve seat 10, bimetallic strip 5 presses assembly to rear, to be pressed on valve seat 10 in plane together with 9 by locating stud 8 and upper press table 6, spool 12 is inserted by bottom, valve seat 10 hole, through bimetallic strip 5 and pressing plate 6 and 9 center hole, spool 12 upper end is provided with nut 7, nut 7 contacts with top board 6.Described screen pack 11 is fixed on the step surface at valve body 1 center by valve seat 10 screw thread, and periphery covers admission annular pass, and keeps micro-with valve gap 3 seam and contact.
Further, the high expanding layer of described bimetallic strip 5 adopts Ni19Cr11 stainless steel high temperature material, and low bulk layer adopts Ni42 stainless steel high temperature material, high temperature occasion time this matches more, its linear temperature-20 ~ 350 DEG C, allowed band-70 ~ 500 DEG C.Bimetallic strip two panels one group, passive layer is relative, is provided with partition between group.When medium temperature raises, not only produce longitudinal bending due to bimetallic strip but also produce transverse bending, and the speed of longitudinal bending is greater than the speed of transverse bending, therefore the thermal distortion order of difform bimetallic strip is different, the bimetal of this drain valve adopts diamond structure, its distortion is followed successively by MM-NN-XX-YY(in proper order see Fig. 4), such bending deflection order, make the working curve of bimetallic strip close to saturated vapor pressure temperature curve, Temperature at discharging condensate is also closer to the saturation temperature of steam, this had both solved the problem of temperature difference different displacements shakiness in drainage procedure, turn improve Temperature at discharging condensate, save the energy.
Further, described spool 12 is stainless steel, and the top of valve gap is screw thread, middle part necking down, with valve seat orifice looping runner, is hemisphere type sealing surface below neck, sphere cure process HRC42, spool bottom is the step surface increased, and afterbody is provided with processing technology hole.Spool 12 sealing surface adopts hemisphere face design, solves spool 12 when offseting and tilt, and sealing surface gap increases, and then causes the problem of steam leakage.Spool bottom is designed to the step surface increased, the 25 ° of taper holes held below with valve seat 10, common formation pressure enlarged cavity.
Further, described valve body 1 upper design becomes hexagonal flange, lower cylinder runner intersects, 120 ° of dove-tail form pivot flange faces, middle part, simultaneously tangent with cylindrical body, intersection arc transition, this design had both added the rigidity of valve body, ensure that the intensity of valve body, again save cost, enhance the overall aesthetics of valve.
In implementation process, during startup, temperature is lower, and bimetallic strip 5 is in extended position, and spool 2 is in lowest part, valve opening, and the low temperature water and air in system is discharged rapidly.When hot condensed water flows through, when temperature raises, bimetallic strip 5 produces and picks power and increase gradually, and spool 12 moves to valve seat 10 gradually, and aperture diminishes.When water temperature is close to saturation temperature, now to pick power maximum for bimetallic strip 5.When steam enters valve seat 10 conical cavity, pressure drop, spool 12 is also closed rapidly.The steam condensation Cheng Shui when temperature in valve declines, the power that picks of bimetallic strip 5 reduces, spool 12 is under vapor pressure, open gradually, when water of condensation is by after valve seat 10 sealant flow anchor ring, act on the step surface of the increase of spool 12 bottom, the active force of medium to spool 12 is increased rapidly and makes spool 12 accelerate to open.The design of the pressure enlarged cavity of this valve overcomes ordinary hot static force type drain valve Subcoold temperature greatly, the shortcoming that action is delayed.
Above content is in conjunction with concrete preferred implementation further detailed description of the utility model, can not assert that the utility model is specifically implemented to be confined to these explanations above-mentioned.For the utility model person of an ordinary skill in the technical field, without departing from the concept of the premise utility, some simple deduction or replace can also be made, all should be considered as belonging to protection domain of the present utility model.
Claims (5)
1. a decelerator with bimetallic strips, it mainly comprises valve body and valve gap, it is characterized in that: valve gap inside is provided with block steam and drain water device and screen pack, described resistance vapour venting gas appliance comprises valve seat, spool and is located at the bimetallic strip group on valve seat, after bimetallic strip group is matched between two by least 2 layers of bimetallic strip, be fixed on valve seat by locating stud and upper and lower pressing plate, one end of spool is arranged in valve seat, and the other end is fixed by nut and top board through after press table, bimetallic strip group and top board successively;
The outer wall of valve seat is provided with outside thread, and valve body center is provided with valve seat mounting hole, and the inwall of valve seat mounting hole is provided with the internal thread matched with outside thread, is provided with screen pack between valve body and valve gap, and described screen pack surrounding covers admission annular pass.
2. a kind of decelerator with bimetallic strips according to claim 1, it is characterized in that: described bimetallic strip is made up of high expanding layer and low bulk layer, expanding layer adopts Ni19Cr11 stainless steel high temperature material, low bulk layer adopts Ni42 stainless steel high temperature material, bimetallic strip is processed into diamond shaped, water caltrop place is provided with chamfering, spool bore is provided with in the middle of rhombus, long axis direction, spool bore both sides is arranged with positioning pin hole, bimetallic strip two panels one group, low bulk layer is relative, is provided with partition between two panels bimetallic strip.
3. a kind of decelerator with bimetallic strips according to claim 1, it is characterized in that: described spool is stainless steel, spool top is provided with screw thread, middle part necking down, it is hemisphere type sealing surface below neck, sphere cure process HRC42, spool bottom is provided with step surface, and the bottom of spool is provided with processing technology hole.
4. a kind of decelerator with bimetallic strips according to claim 1, it is characterized in that: be processed into hexangle type above described valve seat, middle part is provided with v thread, optical axis section is processed in bottom;
Be provided with shoulder hole in the middle of valve seat, top is the first cylinder straight hole, and centre is the second cylinder straight hole, and bottom is 25 ° of taper holes, and the diameter of the first cylinder straight hole is greater than the diameter of the second cylinder straight hole.
5. a kind of decelerator with bimetallic strips according to claim 1, it is characterized in that: described valve body is F22 forging, valve body establishes inlet/outlet runner, inlet/outlet runner is SOCKET WELDING step hole, the upper plane of valve body is hexangle type, and center is provided with tapped hole, and the surrounding of tapped hole is evenly equipped with six scyewed joint holes, tapped hole communicates with outlet flow, is arranged with circular groove outside center hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520785234.1U CN205026369U (en) | 2015-10-12 | 2015-10-12 | Bimetallic strip trap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520785234.1U CN205026369U (en) | 2015-10-12 | 2015-10-12 | Bimetallic strip trap |
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| Publication Number | Publication Date |
|---|---|
| CN205026369U true CN205026369U (en) | 2016-02-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520785234.1U Active CN205026369U (en) | 2015-10-12 | 2015-10-12 | Bimetallic strip trap |
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| Country | Link |
|---|---|
| CN (1) | CN205026369U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106122750A (en) * | 2016-08-22 | 2016-11-16 | 杨鹏翔 | A kind of expansion valve being exclusively used in Automatic steam trap Trap |
| CN111473241A (en) * | 2020-06-15 | 2020-07-31 | 韩帅飞 | Inverted bucket type drain valve capable of preventing flash and leakage |
-
2015
- 2015-10-12 CN CN201520785234.1U patent/CN205026369U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106122750A (en) * | 2016-08-22 | 2016-11-16 | 杨鹏翔 | A kind of expansion valve being exclusively used in Automatic steam trap Trap |
| CN111473241A (en) * | 2020-06-15 | 2020-07-31 | 韩帅飞 | Inverted bucket type drain valve capable of preventing flash and leakage |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 201799 No. 199 Qing Road, Shanghai Industrial Zone, Qingpu Patentee after: Shanghai aiweike valve Limited by Share Ltd Address before: 201700, No. 199, Tuo Qing Road, Qingpu District, Shanghai Patentee before: Shanghai Aiweike Valve Manufacturing Co., Ltd. |
|
| CP03 | Change of name, title or address |