CN204784806U - Guide's formula gate valve - Google Patents
Guide's formula gate valve Download PDFInfo
- Publication number
- CN204784806U CN204784806U CN201520517531.8U CN201520517531U CN204784806U CN 204784806 U CN204784806 U CN 204784806U CN 201520517531 U CN201520517531 U CN 201520517531U CN 204784806 U CN204784806 U CN 204784806U
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- CN
- China
- Prior art keywords
- flashboard
- valve
- valve body
- lumen
- gate valve
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- Expired - Fee Related
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Abstract
The utility model relates to a guide's formula gate valve, it includes the main valve body, install in internal high -pressure side valve body and the low tension side valve body of main valve, high -pressure side valve body and low tension side valve body will the inner chamber of the main valve body falls into high pressure chest, lumen and low pressure chamber, the gate valve still includes: flashboard, valve rod, pressure releasing pathway and balanced passageway have been offered in the flashboard. The utility model has the advantages of: the gate valve chooses for use the common gate valve of drive arrangement moment to select drive arrangement moment obviously to reduce gate valve cost reduction, the pressure automatic switching on of the interior medium of medium and high -pressure side pipeline in the valve pocket need not the external force intervention and can not take place " boiler effect ", the valve rod upward movement is opened in the twinkling of an eye to the gate valve, and flashboard both sides pressure obtains balancedly, and it is easy to open, floodgate valve drive moment is little, floodgate valve drive weight loss, and the gate valve centre of gravity place move down, and gate valve stability improves, and a gate valve pipeline gallows bears the load to be reduced, the utility model discloses simple structure, technology realizes easily.
Description
Technical field
The utility model relates to gate valve apparatus field, particularly a kind of pilot operated gate valve.
Background technique
Gate valve is applied widely in fluids industry, and it drives flashboard by valve rod, does elevating movement along sealing surface of seat, realizes the gate valve that Trimmed sums opens fluid; A lot of gate valve will bear the higher temperature of flowing medium and very large pressure in pipe-line system, so have quite high requirement to the mechanical stability of gate valve, to ensure normally open and close under various working condition.The opening and closing of gate valve are applied to valve rod on by transmission by active force by gate valve drive unit, valve rod drives flashboard elevating movement to realize, the size of moment when gate valve must consider that gate valve opens and closes when designing, make every effort to gate valve can normally open and close under comparatively low driving force square effect, open and close moment and need consider the frictional force that the frictional force of valve rod and filler, valve rod and Stem Mut and valve rod and other positions produce, medium is to the frictional force etc. on the active force of flashboard and ram seal face.Pressure medium and the high and gate valve that bore is large of temperature, often need larger keying moment, gate valve also can exist " Boiler effect " under special operation condition, namely the external heat source under unusual service condition acts on valve inner, the actual pressure in valve pocket is made to be greater than the on high-tension side pressure of flashboard, now flashboard upstream and downstream two sealing surfaces can be close to valve seat simultaneously, two frictional force overcoming flashboard and valve base chamber are then needed when opening gate valve, this just requires that gate valve design needs to select the drive unit of very high-torque, gate valve manufacture cost also can increase, also Chang Fashengyin drive unit moment deficiency causes gate valve normally to open and close.
Summary of the invention
The purpose of this utility model is to provide a kind of pilot operated gate valve.
For achieving the above object, the technical solution adopted in the utility model is: a kind of pilot operated gate valve, it comprises main valve body, be installed on the high pressure side valve body in described main valve body and low voltage side valve body, the inner chamber of described main valve body is divided into hyperbaric chamber by described high pressure side valve body and low voltage side valve body, lumen and low-pressure cavity, described lumen is between high pressure side valve body and low voltage side valve body, described gate valve also comprises: described hyperbaric chamber and low-pressure cavity isolated flashboard when when can slide up and down between described high pressure side valve body and low voltage side valve body and be at the highest notch, described hyperbaric chamber be communicated with completely with low-pressure cavity and be in minimum point, the valve rod that lower end is connected with described flashboard, the pressure release passage that low-pressure cavity is communicated with lumen and the balance channel that hyperbaric chamber is communicated with lumen is offered in described flashboard, when flashboard cuts out, the lower end of described valve rod is pushed against described pressure release passage and is positioned on the port of the side that described flashboard contacts with described lumen, when opening flashboard, described valve rod departs from the port that described pressure release passage is positioned at the side that described flashboard contacts with described lumen, lumen is connected by pressure release passage with low-pressure cavity.
Optimize, the two-port of described pressure release passage lays respectively on side that described flashboard connects with described lumen and the side that described flashboard connects with described low-pressure cavity, and the two-port of described balance channel lays respectively on side that described flashboard contacts with described lumen and the side that described flashboard contacts with described hyperbaric chamber.
Optimize, described flashboard offers the through and valve rod connection chamber that tripe is young greatly, the lower end of described valve rod is inverted T shape, and it is mobilizable is connected in described valve rod connection chamber, and the port that described pressure release passage is positioned at the side that described flashboard contacts with described lumen is positioned at described valve rod connection chamber.
Further, the lower end of described valve rod is provided with the plug be positioned at described pressure release passage for the shutoff when flashboard cuts out on the port of the side that described flashboard contacts with described lumen.
Optimize, described flashboard offers elastic groove, and described elastic groove is connected with lumen.
Further, the two ends of described balance channel lay respectively on the side that the groove inwall of elastic groove and described flashboard connect with described hyperbaric chamber.
Because technique scheme is used, the utility model compared with prior art has following advantages: 1, gate valve selects the more usual gate valve of drive unit moment to select drive unit moment obviously to reduce, and gate valve cost reduces; 2, the pressure automatic switching on of medium and high pressure side pipeline internal medium in valve pocket, gets involved without the need to external force and can not occur " Boiler effect "; 3, gate valve opens the moment that valve rod moves upward, and flashboard pressure at both sides is balanced, and opens easily; 4, gate valve drive unit moment is little, the weight saving of gate valve drive unit, and gate valve position of centre of gravity moves down, and gate valve stability improves, and gate valve pipeline suspension and support bearing load reduces; 5, structure of the present invention is simple, and technique easily realizes.
Accompanying drawing explanation
Accompanying drawing 1 is the utility model structural representation;
In above accompanying drawing: 1, main valve body; 2, flashboard; 3, high pressure side valve body; 4, low voltage side valve body; 5, valve rod; 6, elastic groove; 7, balance channel; 8, valve rod connecting base; 9, pressure release passage; 11, plug; 22, lumen; 31, hyperbaric chamber; 41, low-pressure cavity.
Embodiment
Below in conjunction with embodiment shown in the drawings, the utility model is further described.
As shown in Figure 1, this pilot operated gate valve comprises main valve body 1, be installed on high pressure side valve body 3 in described main valve body 1 and low voltage side valve body 4, the inner chamber of described main valve body 1 is divided into hyperbaric chamber 31, lumen 22 and low-pressure cavity 41 by described high pressure side valve body 3 and low voltage side valve body 4, and described lumen is between high pressure side valve body 3 and low voltage side valve body 4.
Described gate valve also comprises: the flashboard 2 that can slide up and down between described high pressure side valve body 3 and low voltage side valve body 4, the valve rod 5 that lower end is connected with described flashboard 2, when when described flashboard is at the highest notch, described hyperbaric chamber 31 is communicated with completely with low-pressure cavity 41 and is in minimum point, described hyperbaric chamber 31 and low-pressure cavity 41 completely cut off, the pressure release passage 9 that low-pressure cavity 41 is communicated with lumen 22 and the balance channel 7 that hyperbaric chamber 41 is communicated with lumen 22 is offered in it, described flashboard 2 by the left sideboard be oppositely arranged and right sideboard and be connected to the left sideboard side relative with right sideboard top between connecting plate form, it can be casting or forge one-body molded, also can by machining.Be formed with elastic groove 6 between left sideboard and right sideboard, elastic groove 6 is connected with lumen 22.
The two-port of described pressure release passage 9 lays respectively on side that described flashboard 2 connects with described lumen 22 and the side that described flashboard 2 connects with described low-pressure cavity 41, on the side that the two-port of described balance channel 7 lays respectively on side that described flashboard 2 connects with described lumen 22 and described flashboard 2 connects with described hyperbaric chamber 31, in the present embodiment, the two ends of described balance channel 7 lay respectively on the side that the groove inwall of elastic groove 6 and described flashboard 2 contact with described hyperbaric chamber 31.
Described flashboard 2 offers the through and valve rod connection chamber 8 that tripe is young greatly, valve rod connection chamber 8 is inverted T shape shape in the present embodiment, the lower end of described valve rod 5 is also in inverted T shape, it moves horizontally from side and inserts in valve rod connection chamber 8, and it movable up and downly in valve rod connection chamber 8 is connected in described valve rod connection chamber 8, the port that described pressure release passage 9 is positioned at the side that described flashboard 2 contacts with described lumen 22 is positioned at described valve rod connection chamber 8.The lower end of described valve rod 5 is provided with the plug 11 be positioned at described pressure release passage 9 for the shutoff when flashboard 2 cuts out on the port of the side that described flashboard 2 contacts with described lumen 22.
When gate valve is closed, flashboard 2 is in closed condition, is namely in bottom, and hyperbaric chamber 31 is communicated with lumen 22 by balance channel 7, can prevent the abnormal phenomenon of boosting of lumen under temperature difference operating mode; Now, the valve rod connection chamber 8 of valve rod 5 underpart and inverted T shape structure moves up and down direction at valve rod 5 certain interval.
When gate valve is opened, valve rod 5 moves, the plug 11 of valve rod 5 lower end departs from the port of pressure release passage 9, lumen 22 is communicated by pressure release passage 9 with low-pressure cavity 41, and now lumen 22 is communicated with hyperbaric chamber 31 by balance channel 7, therefore hyperbaric chamber 31 is communicated by balance channel 7 and pressure release passage 9 with low-pressure cavity 41, the pressure reduction of flashboard 2 both sides can be reduced rapidly; Valve rod 5 moves on continuing, and after the lower end of valve rod 5 in inverted T shape contacts with the valve rod connection chamber 8 of inverted T shape groove structure, on valve rod 5, shipper pole moves on flashboard 2 and moves until open gate valve completely.
When needs closing gate valve, valve rod 5 moves down until its lower end contacts with the valve rod connection chamber 8 of inverted T shape groove structure, and plug 11 closes pressure release passage 9 simultaneously, and valve rod 5 continues to move down drive flashboard 2 and moves down until complete closing gate valve.
Above-described embodiment, only for technical conceive of the present utility model and feature are described, its object is to person skilled in the art can be understood content of the present utility model and implement according to this, can not limit protection domain of the present utility model with this.All equivalences done according to the utility model Spirit Essence change or modify, and all should be encompassed within protection domain of the present utility model.
Claims (6)
1. a pilot operated gate valve, it comprises main valve body (1), be installed on the high pressure side valve body (3) in described main valve body (1) and low voltage side valve body (4), the inner chamber of described main valve body (1) is divided into hyperbaric chamber (31) by described high pressure side valve body (3) and low voltage side valve body (4), lumen (22) and low-pressure cavity (41), described lumen is positioned between high pressure side valve body (3) and low voltage side valve body (4), described gate valve also comprises: described hyperbaric chamber (31) and low-pressure cavity (41) isolated flashboard (2) when when can slide up and down between described high pressure side valve body (3) and low voltage side valve body (4) and be at the highest notch, described hyperbaric chamber (31) be communicated with completely with low-pressure cavity (41) and be in minimum point, the valve rod (5) that lower end is connected with described flashboard (2), it is characterized in that: in described flashboard (2), offer the pressure release passage (9) that low-pressure cavity (41) is communicated with lumen (22) and the balance channel (7) that hyperbaric chamber (41) is communicated with lumen (22), when flashboard (2) cuts out, the lower end of described valve rod (5) is pushed against described pressure release passage (9) and is positioned on the port of the side that described flashboard (2) contacts with described lumen (22), when opening flashboard (2), described valve rod (5) departs from the port that described pressure release passage (9) is positioned at the side that described flashboard (2) contacts with described lumen (22), lumen (22) is connected by pressure release passage (9) with low-pressure cavity (41).
2. pilot operated gate valve according to claim 1, it is characterized in that: the two-port of described pressure release passage (9) lays respectively on side that described flashboard (2) connects with described lumen (22) and the side that described flashboard (2) connects with described low-pressure cavity (41), the two-port of described balance channel (7) lays respectively on side that described flashboard (2) contacts with described lumen (22) and the side that described flashboard (2) contacts with described hyperbaric chamber (31).
3. pilot operated gate valve according to claim 1, it is characterized in that: described flashboard (2) offers the through and valve rod connection chamber (8) that tripe is young greatly, the lower end of described valve rod (5) is inverted T shape, it is mobilizable is connected in described valve rod connection chamber (8), and the port that described pressure release passage (9) is positioned at the side that described flashboard (2) contacts with described lumen (22) is positioned at described valve rod connection chamber (8).
4. pilot operated gate valve according to claim 3, is characterized in that: the lower end of described valve rod (5) is provided with the plug (11) be positioned at described pressure release passage (9) for the shutoff when flashboard (2) cuts out on the port of the side that described flashboard (2) contacts with described lumen (22).
5. pilot operated gate valve according to claim 1, is characterized in that: described flashboard (2) offers elastic groove (6), and described elastic groove (6) is connected with lumen (22).
6. pilot operated gate valve according to claim 5, is characterized in that: the two ends of described balance channel (7) lay respectively on the side that the groove inwall of elastic groove (6) and described flashboard (2) connect with described hyperbaric chamber (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520517531.8U CN204784806U (en) | 2015-07-16 | 2015-07-16 | Guide's formula gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520517531.8U CN204784806U (en) | 2015-07-16 | 2015-07-16 | Guide's formula gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204784806U true CN204784806U (en) | 2015-11-18 |
Family
ID=54524856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520517531.8U Expired - Fee Related CN204784806U (en) | 2015-07-16 | 2015-07-16 | Guide's formula gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204784806U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111895173A (en) * | 2020-08-06 | 2020-11-06 | 武芳 | Gate valve |
| CN112963558A (en) * | 2021-03-26 | 2021-06-15 | 马鞍山钢铁股份有限公司 | Method for reducing double-gate valve faults of high-pressure steam-water system |
-
2015
- 2015-07-16 CN CN201520517531.8U patent/CN204784806U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111895173A (en) * | 2020-08-06 | 2020-11-06 | 武芳 | Gate valve |
| CN112963558A (en) * | 2021-03-26 | 2021-06-15 | 马鞍山钢铁股份有限公司 | Method for reducing double-gate valve faults of high-pressure steam-water system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151118 Termination date: 20180716 |