CN201416649Y - Drainage regulating valve - Google Patents
Drainage regulating valve Download PDFInfo
- Publication number
- CN201416649Y CN201416649Y CN2009200761793U CN200920076179U CN201416649Y CN 201416649 Y CN201416649 Y CN 201416649Y CN 2009200761793 U CN2009200761793 U CN 2009200761793U CN 200920076179 U CN200920076179 U CN 200920076179U CN 201416649 Y CN201416649 Y CN 201416649Y
- Authority
- CN
- China
- Prior art keywords
- valve
- spool
- seal ring
- liquid flow
- regulating valve
- 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
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Abstract
The utility model provides a drainage regulating valve, comprising a valve body provided with a liquid flow inlet and outlet, a valve cap installed at the upper part of the valve body and a liquid flow regulating mechanism arranged in the valve body, wherein the liquid flow regulating mechanism comprises a valve seat arranged in the liquid flow inlet and outlet, a flow equalization cover arrangedabove the valve seat, a valve core arranged in the flow equalization cover and a valve rod connected with the top end of the valve core. The utility model is characterized in that the valve seat and the valve core are in conical surface close contact. The upper surface of the valve core is provided with a seal ring moving following with the valve core, and a baffle ring is arranged above the sealring. The seal ring is a flexible graphite seal ring, and the valve core and the flow equalization cover are made from stainless steel materials. The drainage regulating valve has the advantages of good tightness, difficult leakage and cavitation and service life prolonging.
Description
Technical field
The utility model relates to a kind of valve mechanism technical field, particularly a kind of drain regulating valve.
Background technique
Steam turbine all is provided with heat regenerative system, the high low pressure heater promptly is housed, for guaranteeing that heater has the water level operation, when preventing that heater from not having the water level operation, the steam turbine upper level draws gas and scurries into that next stage draws gas and the Security that reduces turbine efficiency and equipment, all be provided with drain regulating valve in the draining system of heater, it regulates hydrophobic amount according to the heater water level signal.
The drain regulating valve operating conditions is very poor, and a lot of situations are worked under two-phase fluid and are again to belong under the throttle to move, and vapour is turbid quite serious, and vapour is turbid to the effect that does not to a certain degree just have drain regulating valve.In this case, heater just can not guarantee the water level operation.Will reduce the Economy of steam turbine operation like this, this shows, select vapour turbid little, noise is low, the drain regulating valve of simple in structure, reliable performance is with regard to particular importance.At above-mentioned working condition requirement, the utility model is on the basis of former drain regulating valve, and the absorption external experience, necessarily reforms, and makes valve have good working performance.Owing to adopt the surface of contact angle of rational spool and valve seat, so this valve does not have leakage phenomenon in off position down.The employing import stainless steel material of current-sharing cover and spool; Delay the erosion degree.
The present drain regulating valve that uses, because material therefor and structure is different, the performance difference of product is very big.Subject matter is: easily erosion, leakage, defective such as noise is big, working life is short.
The model utility content
The purpose of this utility model is to provide a kind of drain regulating valve, and its good leak tightness, difficult leakage and vapour are turbid.
In order to address the above problem, the technical solution of the utility model is such:
A kind of drain regulating valve, comprise the liquid stream controlling mechanism of establishing in the valve body that is provided with the liquid flow inlet and outlet, the valve gap that is installed in valve body top, the valve body, this liquid stream controlling mechanism comprises the valve rod of establishing spool and being connected with the spool top in the valve seat that is located in the liquid flow inlet and outlet, the current-sharing cover that is located at the valve seat top, the current-sharing cover, and it is characterized in that: described valve seat becomes the conical surface closely to contact with spool.
Be provided with the seal ring that moves with spool above the described spool, the seal ring top is provided with baffle ring.
Described seal ring is the Expanded graphite seal ring.
Described spool and current-sharing cover adopt stainless steel material.
The beneficial effects of the utility model are: the valve seat in the valve body is the conical surface with spool and closely contacts, and makes drain regulating valve not have leakage phenomenon under closing state; The Expanded graphite seal ring is set on the spool, and the top is provided with baffle ring can well realize seal; Adopt stainless steel material, even move under two-phase flow and throttle, the turbid speed of vapour also is quite slow, has prolonged the working life of valve.
Description of drawings
Fig. 1 is the structural profile schematic representation of the utility model drain regulating valve.
Embodiment
In order to make technological means of the present utility model, creation characteristic, to reach purpose and effect is easy to understand,, further set forth the utility model below in conjunction with concrete diagram.
As shown in Figure 1, the utility model is a kind of drain regulating valve, comprise the liquid stream controlling mechanism of establishing in the valve body 1 that is provided with liquid flow inlet and outlet 3, the valve gap 2 that is installed in valve body 1 top, the valve body 1, this liquid stream controlling mechanism comprise be provided with in the valve seat 4 that is located in the valve body 1 liquid flow inlet and outlet 3, the current-sharing cover 5 that is located at valve seat 4 tops, the current-sharing cover 5 spool 7 moving up and down and be connected with spool 7 tops make its valve rod that moves up and down 11.Current-sharing cover 5 middle and lower parts are provided with a plurality of how much shape runner holes 6.
The 4 one-tenth conical surfaces of spool 7 and valve seat 8 that move down closely contact, and spool 7 tops are provided with the Expanded graphite sealing ring 9 that moves with spool, and seal ring is provided with baffle ring 10.Two import and export 3 on the valve body 1 are distributed in current-sharing cover 5 both sides for straight-through type.
The employing stainless steel material of current-sharing cover and spool even move, still can delay the erosion degree under two-phase flow and throttle, prolonged the working life of valve.
The utility model is according to handling characteristics, carry dc signal by regulator, drove actuator afterwards through the servoamplifier amplification, produce end thrust, drive the regulation valve core knee-action, thereby cause the variation of rate-of flow, come all kinds of parameters in the regulating system, simultaneously actuator send a valve position signal to servoamplifier relatively, make drain regulating valve remain at one with the corresponding position of input signal on, finish servo task.
More than show and described basic principle of the present utility model, major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that describes in the foregoing description and the specification just illustrates principle of the present utility model; the utility model also has various changes and modifications under the prerequisite that does not break away from the utility model spirit and scope, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (4)
1, a kind of drain regulating valve, comprise the liquid stream controlling mechanism of establishing in the valve body that is provided with the liquid flow inlet and outlet, the valve gap that is installed in valve body top, the valve body, this liquid stream controlling mechanism comprises the valve rod of establishing spool and being connected with the spool top in the valve seat that is located in the liquid flow inlet and outlet, the current-sharing cover that is located at the valve seat top, the current-sharing cover, and it is characterized in that: described valve seat becomes the conical surface closely to contact with spool.
2, drain regulating valve according to claim 1 is characterized in that: be provided with the seal ring that moves with spool above the described spool, the seal ring top is provided with baffle ring.
3, drain regulating valve according to claim 2 is characterized in that: described seal ring is the Expanded graphite seal ring.
4, drain regulating valve according to claim 1 is characterized in that: described spool and current-sharing cover adopt stainless steel material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200761793U CN201416649Y (en) | 2009-06-12 | 2009-06-12 | Drainage regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200761793U CN201416649Y (en) | 2009-06-12 | 2009-06-12 | Drainage regulating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201416649Y true CN201416649Y (en) | 2010-03-03 |
Family
ID=41793067
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200761793U Expired - Fee Related CN201416649Y (en) | 2009-06-12 | 2009-06-12 | Drainage regulating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201416649Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105333160A (en) * | 2015-10-26 | 2016-02-17 | 无锡市圣科不锈钢气动自控阀门厂 | Condensed water regulating valve |
-
2009
- 2009-06-12 CN CN2009200761793U patent/CN201416649Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105333160A (en) * | 2015-10-26 | 2016-02-17 | 无锡市圣科不锈钢气动自控阀门厂 | Condensed water regulating valve |
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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 |
Granted publication date: 20100303 Termination date: 20150612 |
|
| EXPY | Termination of patent right or utility model |