CN201661550U - Pneumatic safety device - Google Patents
Pneumatic safety device Download PDFInfo
- Publication number
- CN201661550U CN201661550U CN2009202586290U CN200920258629U CN201661550U CN 201661550 U CN201661550 U CN 201661550U CN 2009202586290 U CN2009202586290 U CN 2009202586290U CN 200920258629 U CN200920258629 U CN 200920258629U CN 201661550 U CN201661550 U CN 201661550U
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- Prior art keywords
- way valve
- control
- air outlet
- pneumatic
- suction port
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Abstract
The utility model discloses a pneumatic safety device, which comprises a mechanical two-position three-way valve and a pneumatic two-position three-way valve. The mechanical two-position three-way valve comprises an air inlet, an air outlet and a control valve stem. The pneumatic two-position three-way valve comprises an air inlet, an air outlet and a control port. The air outlet of the mechanical two-position three-way valve is communicated with the control port of the pneumatic two-position three-way valve. When in work, the control valve stem of the mechanical two-position three-way valve is connected with a 'failed component' in a transmission manner, the air outlet of the mechanical two-position three-way valve is communicated with the control port of the pneumatic two-position three-way valve, the air outlet of the pneumatic two-position three-way valve is communicated with an air inlet of an 'affected component', and mechanical motion of the 'failed component' can control the air outlet of the mechanical two-position three-way valve to be charged with air or not through the control valve stem, further control the air outlet of the pneumatic two-position three-way valve to be charged with air or not, and control the air inlet of the 'affected component' to be charged with air or not, thereby finally establishing linkage relation between the mechanical motion of the 'failed component' and normal running of the 'affected component'.
Description
Technical field
The utility model relates to a kind of pneumatic safety installation.
Background technique
On industrial production; some (individual) parts (hereinafter referred to as " trouble unit ") under many situations are if the undesired meeting of working has influence on the safe operation of some other (individual) parts or complete machine (being designated hereinafter simply as " influenced parts "); therefore just be necessary between these parts safety installation to be set, when trouble unit work is undesired, in time turn off influenced parts.In the system that adopts pneumatic control, whether some " trouble units " have broken down can be judged by the mechanical motion of these parts, and how set up interaction relation easily between the normal operation of the mechanical motion (or whether opening) of these " trouble units " and " influenced parts " is a technical barrier always.For instance, be used at present petroleum well servicing rig up and down the load bearing mechanism between the derrick mainly contain mechanical load bearing mechanism and two kinds of forms of pneumatic load bearing mechanism; The machinery load bearing mechanism is to go up derrick to rise and reach the back, position and strut carrier block automatically by spring, and derrick is dropped on the carrier block; Pneumatic load bearing mechanism is that operator estimate and determine to go up derrick and rise and reach the back, position and strut carrier block by cylinder, and derrick is dropped on the carrier block; In actual use, two kinds of situations that load bearing mechanism all may exist carrier block not open, because carrier block and cylinder do not have interaction relation, if take place that carrier block is not opened, last derrick can not normally drop on situation on the carrier block and cylinder still is rotated further and will inevitably causes safety problem.In above-mentioned petroleum well servicing rig, " trouble unit " is carrier block, and phenomenon of the failure is the position that derrick in the normal carrying was opened not exclusively, do not reached to carrier block." influenced parts " are drum clutch, if this moment, cylinder normally moved, then go up derrick and cause safety problem because of can't normally dropping on the carrier block.There is not to set up between can normal operation the pneumatic safety device of interaction relation in the market with the mechanical motion of " trouble unit " and " influenced parts ".
The model utility content
The purpose of this utility model is to provide a kind of pneumatic safety device.
For achieving the above object, pneumatic safety device of the present utility model comprises machine control two-position three-way valve and gas control two-position three-way valve, and machine control two-position three-way valve includes suction port, air outlet and control valve rod; The gas control two-position three-way valve includes suction port, air outlet and control mouth; The air outlet of machine control two-position three-way valve is connected with the control mouth of gas control two-position three-way valve.
The control valve rod of described machine control two-position three-way valve and a spring driving mechanism roof pressure link together.
Also be provided with between described machine control two-position three-way valve and the described gas control two-position three-way valve and door, comprise two suction ports and an air outlet with door; Be connected with the air outlet of described machine control two-position three-way valve with a suction port of door, be communicated with the control mouth of gas control two-position three-way valve with the air outlet of door.
Described spring driving mechanism includes sleeve, the sleeve two ends are provided with locking cap, locking cap is provided with slide opening, length direction along sleeve in the sleeve is provided with spring, both ends of the spring is provided with the roof pressure piece, the outer end of both sides roof pressure piece is respectively equipped with push rod, and the both sides push rod stretches out the locking cap of both sides respectively by slide opening.
The utlity model has following advantage:
1. the utility model is simple in structure, and is easy to use.Control valve rod with machine control two-position three-way valve during work is in transmission connection with " trouble unit ", suction port with machine control two-position three-way valve, the suction port of gas control two-position three-way valve is communicated with external main gas circuit respectively, the control mouth that the air outlet of machine control two-position three-way valve is communicated with the gas control two-position three-way valve, the suction port that the air outlet of gas control two-position three-way valve is communicated with " influenced parts ", the mechanical motion of " trouble unit " just can be by controlling advancing of valve rod controller control two-position three-way valve like this, whether the air outlet is communicated with, and then control gas control two-position three-way valve advances, whether the air outlet is communicated with, can the suction port of control " influenced parts " bring about the desired sensation, and finally sets up interaction relation between the normal operation of the mechanical motion of " trouble unit " and " influenced parts ".For instance, existing petroleum well servicing rig does not all have to stop automatically the safety installations of cylinder operation when carrier block breaks down, use pneumatic safety device of the present utility model, make control valve rod and carrier block mechanism roof pressure mutually, make the suction port of machine control two-position three-way valve, the suction port of gas control two-position three-way valve is communicated with external main gas circuit respectively, the control mouth that the air outlet of machine control two-position three-way valve is communicated with the gas control two-position three-way valve, the suction port that the air outlet of gas control two-position three-way valve is communicated with drum clutch, when not opening in carrier block mechanism like this, the control valve rod of machine control two-position three-way valve moves with regard to not being subjected to roof pressure, therefore machine control two-position three-way valve advances, the air outlet just can not be connected, the control mouth of gas control two-position three-way valve just can not brought about the desired sensation like this, and then the advancing of gas control two-position three-way valve, the air outlet just can not be connected, the suction port of final index drum clutch can not brought about the desired sensation, cylinder can't normal rotation, guarantees safety problem can not occur.
2. the control valve rod that is arranged so that of spring driving mechanism can be by spring driving mechanism and " trouble unit " (as carrier block mechanism) roof pressure mutually, so just can effectively cushion the impact force that the mechanical motion of " trouble unit " brings, the motion amplitude that also can will pass to machine control two-position three-way valve simultaneously when the mechanical motion amplitude of " trouble unit " is excessive by the compressive strain of spring is contracted in the safety range, thereby avoids machine control two-position three-way valve to sustain damage.
3. when " trouble location " that be associated with a certain " influenced parts " has two, and the setting of door is convenient to set up interaction relation between two " trouble locations " and " influenced parts ", and " influenced parts " just can proper functioning when all being in normal state to guarantee two " trouble locations ".For instance, existing petroleum well servicing rig, as the drum clutch of " influenced parts ", if, be easy to take place safety problem the work of just bringing about the desired sensation under the situation that carrier block mechanism does not open or under the Pneumatic controlled box cylinder control valve situation about not opening (making cylinder begin to rotate).Employing has the pneumatic safety device with door, make the control valve rod by spring driving mechanism and carrier block mechanism roof pressure mutually, make the suction port of machine control two-position three-way valve, the suction port of gas control two-position three-way valve is communicated with external main gas circuit respectively, with the air outlet connection of machine control two-position three-way valve and a suction port of door, with the air outlet connection of Pneumatic controlled box cylinder control valve and another suction port of door, to be communicated with the control mouth of gas control two-position three-way valve with the air outlet of door, the suction port that the air outlet of gas control two-position three-way valve is communicated with drum clutch, like this, no matter be that carrier block is not opened, still Pneumatic controlled box cylinder control valve is not opened, with the air outlet of door can be to the control confession gas of gas control two-position three-way valve, only open under the situation that Pneumatic controlled box cylinder control valve is opened simultaneously at carrier block, the control eloquence of gas control two-position three-way valve can be brought about the desired sensation, and then make the suction port air feed of the air outlet of gas control two-position three-way valve to drum clutch, make the cylinder proper functioning, the safety when effectively having guaranteed well repairing machine work.
The spring driving mechanism be provided with simple and convenient, make a side push rod and " trouble unit " roof pressure (as roof pressure in the carrier block mechanism of well repairing machine) mutually during use, the control valve rod of opposite side push rod and machine control two-position three-way valve is roof pressure mutually, so just between the control valve rod of " trouble unit " and machine control two-position three-way valve, form drive connection, only under the situation of " trouble unit " proper functioning and roof pressure control valve rod, the inlet, outlet of machine control two-position three-way valve is connected.The both sides push rod of spring driving mechanism is in transmission connection by the spring in the sleeve, so just can effectively cushion the impact force that the mechanical motion of " trouble unit " brings.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the structural representation of spring driving mechanism of the present utility model.
Embodiment
As shown in Figure 1, pneumatic safety device of the present utility model comprises and door, spring driving mechanism 2, machine control two-position three-way valve and gas control two-position three-way valve, include two suction port 5A, 5B and an air outlet 5C with door, machine control two-position three-way valve includes suction port 3A, air outlet 3B and control valve rod 3C; The gas control two-position three-way valve includes suction port 4A, air outlet 4B and control mouthful 4C; The air outlet 3B of machine control two-position three-way valve is with being connected with a suction port 5A of door, be connected with external Pneumatic controlled box cylinder control valve 6 with another suction port 5B of door, be connected with the control mouth 4C of gas control two-position three-way valve with the air outlet 5C of door, the air outlet 4B of gas control two-position three-way valve is used for being connected with the suction port 7A of external drum clutch 7 (i.e. " influenced parts "), and the gas control two-position three-way valve is provided with external rapid escape valve 8 and air guide cock tap 9 with series connection between the drum clutch 7.The suction port 3A of machine control two-position three-way valve, the suction port 4A of gas control two-position three-way valve are communicated with external main gas circuit 11 respectively.The control valve rod 3C of machine control two-position three-way valve is connected with external carrier block mechanism 1 (i.e. " trouble unit ") roof pressure by spring driving mechanism 2.
As shown in Figure 2, spring driving mechanism 2 includes sleeve 2A, the sleeve two ends are provided with locking cap 2B, locking cap is provided with slide opening 2C, length direction along sleeve 2A in the sleeve 2A is provided with spring 2D, spring 2D two ends are provided with roof pressure piece 2E, and the outer end of both sides roof pressure piece 2E is respectively equipped with push rod 2F, and both sides push rod 2F stretches out the locking cap 2B of both sides respectively by the slide opening 2C of homonymy.Can be to be spirally connected between locking cap 2B and the sleeve 2A, also can be welding or other various modes that are connected.
During work, if the carrier block mechanism 1 as " trouble unit " does not open, or as " trouble unit " Pneumatic controlled box cylinder control valve 6 do not open, then can not be connected with its air outlet 5C with suction port 5A, the 5B of door, the control mouth 4C of gas control two-position three-way valve will not bring about the desired sensation, thereby inlet, outlet 4A, the 4B of gas control two-position three-way valve can be connected, and then the suction port 7A that makes drum clutch 7 can not bring about the desired sensation, cylinder can not started working, the safety when having guaranteed well repairing machine work.
Claims (4)
1. pneumatic safety device is characterized in that: comprise machine control two-position three-way valve and gas control two-position three-way valve, machine control two-position three-way valve includes suction port, air outlet and control valve rod; The gas control two-position three-way valve includes suction port, air outlet and control mouth; The air outlet of machine control two-position three-way valve is connected with the control mouth of gas control two-position three-way valve.
2. pneumatic safety device according to claim 1 is characterized in that: the control valve rod of described machine control two-position three-way valve and a spring driving mechanism roof pressure link together.
3. pneumatic safety device according to claim 2 is characterized in that: also be provided with between described machine control two-position three-way valve and the described gas control two-position three-way valve and door, comprise two suction ports and an air outlet with door; Be connected with the air outlet of described machine control two-position three-way valve with a suction port of door, be communicated with the control mouth of gas control two-position three-way valve with the air outlet of door.
4. pneumatic safety device according to claim 1 and 2, it is characterized in that: described spring driving mechanism includes sleeve, the sleeve two ends are provided with locking cap, locking cap is provided with slide opening, length direction along sleeve in the sleeve is provided with spring, both ends of the spring is provided with the roof pressure piece, and the outer end of both sides roof pressure piece is respectively equipped with push rod, and the both sides push rod stretches out the locking cap of both sides respectively by slide opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202586290U CN201661550U (en) | 2009-11-30 | 2009-11-30 | Pneumatic safety device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202586290U CN201661550U (en) | 2009-11-30 | 2009-11-30 | Pneumatic safety device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201661550U true CN201661550U (en) | 2010-12-01 |
Family
ID=43231965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202586290U Expired - Lifetime CN201661550U (en) | 2009-11-30 | 2009-11-30 | Pneumatic safety device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201661550U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102080676B (en) * | 2009-11-30 | 2013-03-20 | 中原特种车辆有限公司 | Pneumatic safety device |
-
2009
- 2009-11-30 CN CN2009202586290U patent/CN201661550U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102080676B (en) * | 2009-11-30 | 2013-03-20 | 中原特种车辆有限公司 | Pneumatic safety device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20101201 Effective date of abandoning: 20091130 |
|
| RGAV | Abandon patent right to avoid regrant |