CN1315654A - Balancer for multi-cavity plunger-type differential pressure instrument - Google Patents
Balancer for multi-cavity plunger-type differential pressure instrument Download PDFInfo
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- CN1315654A CN1315654A CN 00105415 CN00105415A CN1315654A CN 1315654 A CN1315654 A CN 1315654A CN 00105415 CN00105415 CN 00105415 CN 00105415 A CN00105415 A CN 00105415A CN 1315654 A CN1315654 A CN 1315654A
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- plunger
- valve body
- annular groove
- differential pressure
- shutoff
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Abstract
A multi-cavity plunger-type balancer for differential pressure instrument or meter is composed of valve body, plunger, sealing ring, spring and plug. There are 6 ring slots containing O-shaped rings on the external surface of plunger cylinder. The two transverse through holes one between the second and the third ring slots and another between the fourth and the fifth ring slots are communicated with the axial blind central hole, the 6 slots divides the valve body into 6 cavities. Its advantages include high reliability, simple operation, convenient application and protecting instrument or meter.
Description
The present invention relates to protect the evener of differential pressure meter, concrete is a kind of balancer for multi-cavity plunger-type differential pressure instrument.
Differential pressure meter is the big valuable instrument of a kind of consumption; must dispose evener during use protects its measure and control device; when preventing the differential pressure meter opening and closing, one road pressure moment occurred for to be far longer than another road pressure (referring to surpass range ability), to the uniaxial pressure impact failure of differential pressure meter.
In the prior art, commonly used is a kind of three valve group differential pressure meter eveners, and it is by being separately positioned on two valves 1 on the inlet ductwork, 3 and the valve 2 of these two inlet ductwork of cross connection totally three valve sets prejudice Fig. 1, its use is: at first open valve No. 2, form 1, No. 3 valve and communicate; Open valve then 1 and No. 3, lead to and press among the ＂ and ＂; Close valve at last again No. 2,1, No. 3 valve is not communicated, form two single channel.Thereby the protection differential pressure meter has been avoided the uniaxial pressure impact failure to differential pressure meter, but because operation steps is numerous and diverse, and the user of service slips up (at first not opening valve No. 2), so often cause inoperatively, breaks differential pressure meter.
The objective of the invention is to overcome the deficiencies in the prior art; a kind of balancer for multi-cavity plunger-type differential pressure instrument is provided; it can be finished the observation of protection by a simple motion; avoid misoperation; the reliability height, and can verify in use whether differential pressure meter is working properly; easy to maintenance, easy to use, prolong instrument serviceable life.
The object of the present invention is achieved like this:
A kind of balancer for multi-cavity plunger-type differential pressure instrument comprises valve body, plunger, O-ring seal, spring, shutoff, it is characterized in that:
Valve body is the microscler cylinder body that there is cylindrical hole at the center, and its hole wall has position staggered two last interfaces and two lower interfaces to be communicated with endoporus respectively; The valve gap sealing of this valve body front end to be threaded, valve rear end is with the shutoff sealing of affixed back;
Plunger is one the right cylinder of outer boom to be arranged, should in the center pit of valve gap, stretch out by outer boom, this right cylinder becomes to be slidingly matched with the cylindrical hole of valve body, between this right cylinder rear end face and the back shutoff back-moving spring is housed, on the reference column that shutoff was inwardly stretched out after this back-moving spring was sleeved on;
The annular groove of dress ＂ O ＂ shape circle in six roads is arranged on the periphery of plunger cylinder body, between this second and third annular groove and between fourth, fifth annular groove cross through hole is being arranged respectively, have central axial bore to be communicated with between this two transverse holes, this axial hole end seals with shutoff; Described six road annular grooves are separated out six chambers with valve body inner bore, the relative position relation of this six roads annular groove and four upper and lower interfaces of valve body is: when the right cylinder of plunger is posted by the valve gap inwall, go up that interfaces lay respectively between second and third annular groove and fourth, fifth annular groove and respectively corresponding second, four chambers for described two, described two lower interfaces lay respectively between first and second annular groove and third and fourth annular groove and corresponding first and third chamber respectively.
Have an air hole to be communicated with the valve body cylindrical hole on described valve gap, this air hole is communicated with external source of the gas.
The material of described valve body, plunger, valve gap, shutoff can be steel, copper, aluminium, pottery, plastics etc.
The present invention has following actively useful effect:
1. balancer for multi-cavity plunger-type differential pressure instrument of the present invention is with six groups of chamber structures orderly, that function is different; together with multi-cavity plunger movement (propelling) process; according to the differential pressure meter guard method; switched the impulse path of differential pressure meter; realized that differential pressure meter boosts or closes protection in the pressure release in unlatching; by the purpose that a simple action is finished protection jointly and observed, definitely avoided operating personnel's error, make differential pressure meter obtain protection.
2. this product is in conjunction with the guard method of differential pressure meter, designed structure that multi-cavity plunger and second, the 4th chamber gas circuit communicate independently and controlled among the ＂ locking (passs) of two paths, the ＂ and ＂ (intercommunication), ＂ measurement ＂ (opening) three processes.Structurally be plunger, so can bear high pressure.Having increases the usefulness that the safe handling differential pressure meter is produced, and compares with traditional three valve group eveners, and that this product has is simple in structure, reliability is high,, advantage that economic worth high few with material.
3. this product has the raising differential pressure meter function in serviceable life, and Here it is, and ＂ locks the ＂ state.Its essence is: obtained differential pressure meter and when observation, just worked, idle function when not observing, when differential pressure meter was not worked, the sensor diaphragm distortion was minimum or indeformable.
4. this product can be designed to the product of single path, is used in the ＂ that measures single pressure instrument and locks ＂ on.
5. this product can whether the simple authentication differential pressure meter be normal indirectly in use, and promptly when Fig. 2, Fig. 3 state, differential pressure meter should show zero, otherwise differential pressure meter might need maintenance to identify.
6, because the plunger-type structure of this product is simple, so it has following manufacturing and maintenance characteristics:
1. be suitable for material and extensively be easy to get, can use steel, copper, aluminium, pottery, plastics etc.
2. easy to maintenance: except that " O " type circle needed inspection or replacing in instrument is examined surely, other part generally can not damage, and the ability of long-term use is arranged.
Now in conjunction with the accompanying drawings:
Fig. 1 is the structural representation of three valve group differential pressure meter eveners in the prior art;
Fig. 2 is the structural representation of balancer for multi-cavity plunger-type differential pressure instrument of the present invention, shows usual state of living in;
The same Fig. 2 of Fig. 3 shows user mode;
The same Fig. 2 of Fig. 4 shows in the observation use;
Fig. 5 is the structural representation of automatic balancer for multi-cavity plunger-type differential pressure instrument of the present invention.
Accompanying drawing number:
1., 2., 3., valve
1. valve body
101. interface 103. lower interfaces on the last interface 102.
104. lower interface
2. valve gap
3. shutoff 301. (retainer spring) cylinder after
4. plunger
41. right cylinder 42. outer booms
401. the first road annular groove and ＂ O ＂ type circle 402. second road annular grooves and ＂ O ＂ type circle
403. the 3rd road annular groove and ＂ O ＂ type circle 404. the 4th road annular groove and ＂ O ＂ type circle
405. the 5th road annular groove and ＂ O ＂ type circle 406. the 6th road annular groove and ＂ O ＂ type circle
407. cross through hole 408. cross through hole 409. axial holes
5. shutoff
6. spring
A. the first chamber B., second cavity C. the 3rd chamber
D. the 4th chamber E. the 5th chamber F. the 6th chamber
Please refer to Fig. 2, Fig. 3, Fig. 4, balancer for multi-cavity plunger-type differential pressure instrument of the present invention comprises valve body 1, plunger 4, O-ring seal, spring, shutoff.
Valve body 1 is communicated with endoporus respectively for the center has the microscler cylinder body of cylindrical hole, its hole wall to have staggered two in position to go up 101,102 and two lower interfaces 103,104 of interface; Valve gap 2 sealings of this valve body front end to be threaded, shutoff 3 sealings after the valve rear end;
The annular groove 401,402,403,404,405,406 that dress ＂ O ＂ shape circle in six roads is arranged on the periphery of plunger cylinder body 41, between this second and third annular groove 402,403 and between fourth, fifth annular groove 404,405 cross through hole 407,408 is being arranged respectively, have central axial bore 409 to be communicated with between this two transverse holes, this axial hole end is with shutoff 5 sealings; Described six road annular grooves are separated out six chamber A, B, C, D, E, F with valve body inner bore, the relative position relation of this six roads annular groove and four upper and lower interfaces of valve body is: when the right cylinder of plunger is posted by the inwall of valve gap 2, go up that interfaces 101,102 lay respectively between second and third annular groove 402,403 and fourth, fifth annular groove 404,405 and respectively corresponding second, four chamber B, D for described two, described two lower interfaces 103,104 lay respectively between first and second annular groove 401,402 and third and fourth annular groove 403,404 and corresponding first and third chamber A, C respectively.
In the embodiment shown in fig. 5, have an air hole 7 to be communicated with the cylindrical hole inner chamber of valve body 1 on the described valve gap 2, this air hole 7 is communicated with external source of the gas.
The material of described valve body 1, plunger 4, valve gap 2, shutoff 2,5 can be steel, copper, aluminium, pottery, plastics etc. and other suitable materials.
Design feature of the present invention and principle of work:
1. Fig. 2 is the usual residing state of balancer for multi-cavity plunger-type differential pressure instrument.Under the effect of spring force, the multi-cavity plunger props up the valve body right-hand member, and O type circle 402 has cut off the path of last interface 101 and lower interface 103; O type circle 404 has cut off the path of last interface 102 and lower interface 104, this moment, the positive and negative two ends of differential pressure meter communicated, see Fig. 2, intercommunication gas circuit between the second and the 4th chamber B, the D is because positive and negative two-way pressure is equal, so the diaphragm of differential pressure gauge inside or other flexible member are stressed symmetrically, minimum or the indeformable state of its distortion, show the homodyne point, at this moment, obtain the sensor of differential pressure meter is improved the favorable environment in life-span indirectly.We also claim it is " locking " state at this moment.
2. Fig. 3 is a balancer for multi-cavity plunger-type differential pressure instrument in implementing to use, and the user overcomes elastic force, and compression spring promotes first stroke of multi-cavity plunger left.Its effect is: place chamber B between O type circle 102 and 103, connected the path of last interface 101 and lower interface 103; O type circle 104 105 between the chamber D at place; connected the path of last interface 102 and lower interface 104. simultaneously since the second and the 4th chamber B, D communicate; so the pressure source of being introduced by two-way is in this ＂ and ＂; and no matter that road pressure is at first introduced; all to feed another road, thereby reach protection differential pressure meter. we also claim to be among the ＂ at this moment and the ＂ state.
3. Fig. 4 is that balancer for multi-cavity plunger-type differential pressure instrument is in observation is used, along continuous first stroke second stroke afterwards.The person of being to use continues to overcome spring force, and compression spring promotes the multi-cavity plunger to the valve body high order end, until by the state of dieback.Its effect is: the cavity C at place between O type circle 103 and 104, connected the path of last interface 101 and lower interface 103 independently; The chamber E at place between O type 105 and 106 has connected the path of last interface 102 and lower interface 104 independently.Cavity C and chamber E do not communicate, and they communicate with different pressure source separately, thereby independently measure the impulse path for differential pressure meter has switched two.We also claim it is " measurement " state at this moment.
4. when user observation finishes, can let go (or drawing), the multi-cavity plunger moves right under the effect of spring force, until low order end by dieback, from Fig. 4 state to Fig. 3 state again to Fig. 2 state, also be one by among the ＂ and ＂ to the process of ＂ locking ＂.
5. Fig. 5 is automatic balancer for multi-cavity plunger-type differential pressure instrument.Its action is a power control multi-cavity plunger by measured medium pressure.The measured medium pressure hysteresis of utilizing damping principle will introduce differential pressure meter in design is handled, and with the positive feedback principle measured medium pressure is delivered to the 6th chamber F of valve body right-hand member, replacement manual feed, automatic switchover gas circuit simultaneously.That is: from the positive pressure sources impulse, deliver to the 6th chamber of valve body right-hand member.Course of action the same 2,3.Because the 6th chamber pressure source exists with system pressure, so Fig. 4 is automatic balancer for multi-cavity plunger-type differential pressure instrument day-to-day work state.No doubt there has not been " locking " function yet.
Claims (3)
1. a balancer for multi-cavity plunger-type differential pressure instrument comprises valve body, plunger, O-ring seal, spring, shutoff, it is characterized in that:
Valve body is the microscler cylinder body that there is cylindrical hole at the center, and its hole wall has position staggered two last interfaces and two lower interfaces to be communicated with endoporus respectively; The valve gap sealing of this valve body front end to be threaded, shutoff sealing after the valve rear end;
Plunger is one the right cylinder of outer boom to be arranged, should in the center pit of valve gap, stretch out by outer boom, this right cylinder becomes to be slidingly matched with the cylindrical hole of valve body, between this right cylinder rear end face and the back shutoff back-moving spring is housed, on the reference column that shutoff was inwardly stretched out after this back-moving spring was sleeved on;
The annular groove of dress ＂ 0 ＂ shape circle in six roads is arranged on the periphery of plunger cylinder body, between this second and third annular groove and between fourth, fifth annular groove cross through hole is being arranged respectively, have central axial bore to be communicated with between this two transverse holes, this axial hole end seals with shutoff; Described six road annular grooves are separated out six chambers with valve body inner bore, the relative position relation of this six roads annular groove and four upper and lower interfaces of valve body is: when the right cylinder of plunger is posted by the valve gap inwall, go up that interfaces lay respectively between second and third annular groove and fourth, fifth annular groove and respectively corresponding second, four chambers for described two, described two lower interfaces lay respectively between first and second annular groove and third and fourth annular groove and corresponding first and third chamber respectively.
2. balancer for multi-cavity plunger-type differential pressure instrument as claimed in claim 1 is characterized in that: have an air hole to be communicated with the valve body cylindrical hole on described valve gap, this air hole is communicated with external source of the gas.
3. balancer for multi-cavity plunger-type differential pressure instrument as claimed in claim 1 is characterized in that: the material of described valve body, plunger, valve gap, shutoff can be any and the combination thereof in steel, copper, aluminium, pottery, the plastics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00105415 CN1315654A (en) | 2000-03-31 | 2000-03-31 | Balancer for multi-cavity plunger-type differential pressure instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00105415 CN1315654A (en) | 2000-03-31 | 2000-03-31 | Balancer for multi-cavity plunger-type differential pressure instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1315654A true CN1315654A (en) | 2001-10-03 |
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ID=4577680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00105415 Pending CN1315654A (en) | 2000-03-31 | 2000-03-31 | Balancer for multi-cavity plunger-type differential pressure instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1315654A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104819802A (en) * | 2015-05-06 | 2015-08-05 | 中国海洋大学 | Deep-sea floor excess pore water pressure measurement feeler lever range protection device |
| CN105092146A (en) * | 2015-05-06 | 2015-11-25 | 中国海洋大学 | Overvoltage protector for seabed pore pressure dynamic response sensing apparatus |
-
2000
- 2000-03-31 CN CN 00105415 patent/CN1315654A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104819802A (en) * | 2015-05-06 | 2015-08-05 | 中国海洋大学 | Deep-sea floor excess pore water pressure measurement feeler lever range protection device |
| CN105092146A (en) * | 2015-05-06 | 2015-11-25 | 中国海洋大学 | Overvoltage protector for seabed pore pressure dynamic response sensing apparatus |
| CN105092146B (en) * | 2015-05-06 | 2017-07-04 | 中国海洋大学 | Sea bed pore pressure dynamic response sensing equipment over-pressure safety device |
| CN104819802B (en) * | 2015-05-06 | 2017-11-14 | 中国海洋大学 | Abyssal floor excess pore water pressure measures feeler lever range protection device |
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