CN102543570B - Deep well pressure switch used in high temperature high pressure environment - Google Patents
Deep well pressure switch used in high temperature high pressure environment Download PDFInfo
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- CN102543570B CN102543570B CN201210015516.4A CN201210015516A CN102543570B CN 102543570 B CN102543570 B CN 102543570B CN 201210015516 A CN201210015516 A CN 201210015516A CN 102543570 B CN102543570 B CN 102543570B
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- diaphragm spring
- cylindrical shell
- input electrode
- axle center
- nut
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Abstract
The invention provides a deep well pressure switch used in high temperature high pressure environment, comprising an input electrode and an output electrode which are arranged in a barrel, wherein a ring slot is formed at one end of the input electrode, a positioning nut connected with a screw thread on the inner wall of the barrel is sheathed on the ring slot, one end of the positioning nut resists against the input electrode, and the other end of the positioning nut resists against a locking nut on the input electrode; a contact hole is arranged at the other end of the input electrode, an elastic contact head is arranged on the axis and is kept in contact with the output electrode, the other end of the axis penetrates the barrel and then is fixed on a diaphragm spring, the diaphragm spring is fixed on the barrel by virtue of a support disk and a sealed cavity is formed between the diaphragm spring and the support disk; and the axis is sheathed with an insulation nut, and the insulation nut is arranged between the output electrode and the diaphragm spring and is in clearance fit with the barrel. The pressure switch provided by the invention has good reliability and good safety, has simple structure and is also convenient to mount.
Description
Technical field
The invention belongs to electromechanical equipment switching technique field, specifically introduce a kind of deep-well pressure switch for high temperature and high pressure environment.
Background technology
Carrying out in the process of deep drilling exploration, the electronic equipment in drilling rod cylindrical shell all needs to be equipped with corresponding control switch, to control the running of each equipment.Existing control switch normally adopts traditional mains switch or isolating switch, but, because the diameter of drilling well is very little, and in deep-well, be full of mud and rubble, and be accompanied by high temperature, high pressure and strong vibration, in this environment, the fail safe of general control switch is difficult to be protected, be easy to break down, under huge pressure-acting, be difficult to continual and steady work reliably, cause useful life shorter.Meanwhile, because the mine degree of depth is very large, want effectively to control equipment in drilling well, the structural design of control switch obtains also comparatively complicated, and stability when this has further affected switch, will be difficult to timely solution once break down.At present also there is no on the market a kind of pressure switch that is specifically designed to deep drilling exploration, this is also this area problem demanding prompt solution.
Summary of the invention
For above-mentioned deficiency of the prior art, poor reliability, the lower problem of fail safe when main purpose of the present invention is to solve existing switching device and uses in deep-well, and provide a kind of can be under high temperature, high pressure, strong motion environment the deep-well pressure switch of reliably working.
Technical scheme of the present invention: a kind of deep-well pressure switch for high temperature and high pressure environment, comprises cylindrical shell; It is characterized in that, in cylindrical shell, be provided with input electrode and output electrode; The side indent of input electrode one end forms annular groove, and the setscrew nut being threaded with cylinder inboard wall is enclosed within on the annular groove of input electrode, and one end and the input electrode of setscrew nut push against, and the other end of setscrew nut pushes against with the locking nut being connected in input electrode; Be provided with the contact hole for connecting elastic contact head at the other end of input electrode, described elastic contact head is arranged on the one end in axle center and keeps in touch with the output electrode being enclosed within on axle center, the other end in axle center is fixed on diaphragm spring through after cylindrical shell, described diaphragm spring is fixed on cylindrical shell by supporting disk, end face at supporting disk is provided with groove, and the groove on supporting disk is being installed the cavity that forms sealing after diaphragm spring; On axle center also cover have insulating nut, described insulating nut be located between output electrode and diaphragm spring and with cylindrical shell matched in clearance; There is deformation the cavity sunken inside to described sealing in diaphragm spring, axle center promotes elastic contact head and snaps in contact hole and make input electrode and output electrode conducting under diaphragm spring drives in the time of pressurized.
In the present invention, input electrode, output electrode and elastic contact head are conductor, be made up of insulating material in insulating nut and axle center, elastic contact head has certain elasticity and can snap under pressure in the contact hole of input electrode, here the effect of insulating nut is output electrode and diaphragm spring and cylindrical shell to keep apart, and avoids short circuit.
When pressure switch of the present invention work, by the high pressure producing in deep-well, make diaphragm spring, under the squeezing action of high pressure, deformation occur, to cavity inner side depression, the degree of depth of cavity is being established clocking requirement and can meet the demand of the deformation quantity of diaphragm spring here; Because axle center is to be fixed on diaphragm spring, therefore move the indent along with diaphragm spring to the inside in axle center, being arranged on the elastic contact head on termination inside axle center is pressed in the contact hole of input electrode, like this, input electrode is by elastic contact head and output electrode conducting, and corresponding equipment energising starts.
Further technical scheme, is provided with circular groove in the side of cylindrical shell, and described supporting disk, diaphragm spring and axle center are all installed in the circular groove of cylindrical shell.By circular groove is set, can make all parts of pressure switch all be positioned at this groove, can effectively avoid like this pressure switch to contact with the borehole wall of deep-well, protection switch is not damaged.
Further technical scheme, described diaphragm spring and supporting disk are overlapping and be fixed by screws on cylindrical shell, between supporting disk and cylindrical shell and diaphragm spring, are all sealed and matched.Supporting disk and diaphragm spring when mounted each sealing surface all need to carry out tight static seal processing, to prevent that in deep-well, mud is blended in cylindrical shell, are conducive to improve equipment dependability.
With respect to prior art, the present invention has following beneficial effect:
1, good reliability: the power that pressure switch of the present invention utilizes deep-well pressure to connect as switch, and adopt the diaphragm spring structure with elasticity and reset function to be used as power traction, can realize the automatic start-stop of switch, and due to diaphragm spring and the good hermetic barrier effect of supporting disk, make the pressure switch can be compared with normal under adverse circumstances, steady operation.
2, fail safe is good: in the present invention owing to being to connect by elastic contact head between input electrode and output electrode, and elastic contact head is to come control connection or disconnection by diaphragm spring, therefore the conducting between electrode matches with deep-well internal pressure, can realize the automatic conducting of circuit in the time reaching force value, auto-breaking after pressure reduces, thus the fail safe that equipment moves improved.
3, simple in structure: pressure switch of the present invention is goed deep into drilling well owing to being directly installed in drilling rod and with drilling rod, and therefore structure is simplified greatly, the parts of employing still less, are installed also more convenient.
Brief description of the drawings
Fig. 1 is the external structure of deep-well pressure switch of the present invention;
Fig. 2 is the A-A cutaway view of Fig. 1;
Fig. 3 is the B-B cutaway view of Fig. 1.
In figure, 1-cylindrical shell, 2-input electrode, 3-output electrode, 4-annular groove, 5-setscrew nut, 6-locking nut, 7-elastic contact head, 8-contact hole, 9-axle center, 10-diaphragm spring, 11-supporting disk, 12-cavity, 13-insulating nut, 14-screw, 15-nut, 16-packing ring.
Embodiment
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
As shown in Figure 1, Figure 2 and Figure 3, a kind of deep-well pressure switch for high temperature and high pressure environment, it comprises input electrode 2 and the output electrode 3 be located in cylindrical shell 1, here cylindrical shell 1 is existing drilling rod cylindrical shell, be generally drum, can be multi-section structure, the various device such as motor, detector is installed in cylindrical shell 1, pressure switch of the present invention be also mounted in cylindrical shell 1.Input electrode 2 is cylindrical and setting vertically in cylindrical shell, and output electrode 3 is block, and when mounted, input electrode 2 is connected with power line respectively with output electrode 3.The side of input electrode 2 one end caves inward and forms the annular groove 4 of a toroidal, in input electrode 2, the diameter of annular groove 4 place one sides is less than the diameter of opposite side, the setscrew nut 5 being connected with cylindrical shell 1 inner thread is enclosed within on the annular groove 4 of input electrode 2, one end of setscrew nut 5 and input electrode 2 push against, and the other end of setscrew nut 5 pushes against with the locking nut 6 being threaded in input electrode 2; Here the effect of setscrew nut 5 is to limit input electrode 2 and moves to upper end, and the effect of locking nut 6 is to limit input electrode 2 and moves down, thereby reaches the object that input electrode 2 is located.Be provided with the contact hole 8 for connecting elastic contact head 7 at the other end of input electrode 2, contact hole 8 horizontally sets, described elastic contact head 7 is arranged on the one end in axle center 9 and keeps in touch with the output electrode 3 being enclosed within on axle center 9, axle center 9 is the axle of a column and adopts insulating material to make, the other end in axle center 9 is fixed on diaphragm spring 10 through after cylindrical shell 1, described diaphragm spring 10 is fixed on cylindrical shell 1 outer wall by supporting disk 11, side at cylindrical shell 1 is provided with circular groove, described supporting disk 11, diaphragm spring 10 and axle center 9 are all installed in the circular groove of cylindrical shell 1.End face at supporting disk 11 is provided with groove, and the groove on supporting disk is being installed the cavity 12 of the rear formation sealing of diaphragm spring 10.In the present invention; diaphragm spring 10 and supporting disk 11 are disc-shape overlapping; diaphragm spring 10 is fixed on cylindrical shell 1 by screw 14; axle center 9 is successively through fastening by nut 15 after diaphragm spring 10 and supporting disk 11; for diaphragm flat spring 10, between diaphragm spring 10 and nut 15, be also provided with packing ring 16.Slide and prevent from short circuit from also overlapping and having insulating nut 13 at the middle part in axle center 9 for convenience of axle center, described insulating nut 13 be located between output electrode 3 and diaphragm spring 10 and with cylindrical shell 1 matched in clearance.There are deformation cavity 12 sunken insides to described sealing in diaphragm spring 10, axle center 9 promotes elastic contact head 7 and snaps in contact hole 8 and make input electrode 2 and output electrode 3 conductings under diaphragm spring 10 drives in the time of pressurized.
Operation principle: referring to Fig. 2 and Fig. 3, in the time that cylindrical shell 1 is deep in deep-well, along with the increase of the mine degree of depth, gas or muddy water etc. in well also increases the pressure of drum surface, when being positioned at pressure that the diaphragm spring 10 on cylindrical shell 1 surface is subject to when enough large, the middle part of diaphragm spring 10 will produce deformation and to cavity 12 sunken insides, the axle center 9 being at this moment fixedly connected on diaphragm spring 10 is promoted to the inside; Due to the insulating effect of insulating nut 13, thereby the output electrode 3 that axle center 9 is arranged on axle center in moving process can not contact and have good insulation effect with cylindrical shell 1; Under the promotion in axle center 9, elastic contact head 7 snaps onto in contact hole 8, and at this moment input electrode 2 and output electrode 3 are by elastic contact head 7 conductings, whole power on circuitry.
In the time that cylindrical shell 1 is worked complete rising, along with the rising borehole pressure of height reduces, the pressure that diaphragm spring 10 outsides are subject to reduces, diaphragm spring 10 will automatically reset, and its middle part crushed element moves to original position laterally, and at this moment axle center 9 is driven and pulls out, elastic contact head 7 is deviate from contact hole 8, input electrode 2 separates with output electrode 3, and circuit interrupts
Finally it should be noted that, above embodiment is only in order to illustrate technical scheme of the present invention but not restriction technologies scheme, although applicant has been described in detail the present invention with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, the amendment that those carry out technical scheme of the present invention or be equal to replacement, and do not depart from aim and the scope of the technical program, all should be encompassed in the middle of claim scope of the present invention.
Claims (3)
1. for a deep-well pressure switch for high temperature and high pressure environment, comprise cylindrical shell (1); It is characterized in that, in cylindrical shell (1), be provided with input electrode (2) and output electrode (3); The side indent of input electrode (2) one end forms annular groove (4), the setscrew nut (5) being connected with cylindrical shell (1) inner thread is enclosed within on the annular groove (4) of input electrode (2), one end of setscrew nut (5) and input electrode (2) push against, and the other end of setscrew nut (5) pushes against with the locking nut (6) being connected in input electrode (2); Be provided with the contact hole (8) for connecting elastic contact head (7) at the other end of input electrode (2), described elastic contact head (7) is arranged on the one end in axle center (9) and keeps in touch with the output electrode (3) being enclosed within on axle center (9), the other end in axle center (9) is fixed on diaphragm spring (10) through after cylindrical shell (1), described diaphragm spring (10) is fixed on cylindrical shell (1) by supporting disk (11), end face at supporting disk (11) is provided with groove, and the groove on supporting disk is being installed the cavity (12) that forms sealing after diaphragm spring (10); On axle center (9) also cover have insulating nut (13), described insulating nut (13) be located between output electrode (3) and diaphragm spring (10) and with cylindrical shell (1) matched in clearance; There is deformation cavity (12) sunken inside to described sealing in diaphragm spring (10), axle center (9) promote elastic contact head (7) and snap in contact hole (8) and make input electrode (2) and output electrode (3) conducting under diaphragm spring (10) drives in the time of pressurized.
2. the deep-well pressure switch for high temperature and high pressure environment according to claim 1, it is characterized in that, side at cylindrical shell (1) is provided with circular groove, and described supporting disk (11), diaphragm spring (10) and axle center (9) are all installed in the circular groove of cylindrical shell (1).
3. the deep-well pressure switch for high temperature and high pressure environment according to claim 1, is characterized in that, described diaphragm spring (10) and supporting disk (11) are overlapping and be fixed on cylindrical shell (1) by screw (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210015516.4A CN102543570B (en) | 2012-01-18 | 2012-01-18 | Deep well pressure switch used in high temperature high pressure environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210015516.4A CN102543570B (en) | 2012-01-18 | 2012-01-18 | Deep well pressure switch used in high temperature high pressure environment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102543570A CN102543570A (en) | 2012-07-04 |
| CN102543570B true CN102543570B (en) | 2014-07-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210015516.4A Active CN102543570B (en) | 2012-01-18 | 2012-01-18 | Deep well pressure switch used in high temperature high pressure environment |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2941734A1 (en) * | 1979-10-15 | 1981-04-23 | Kienzle Apparate Gmbh, 7730 Villingen-Schwenningen | Pressure switch which warns of low pressure - is for double tyres of motor vehicle and has reliable separation between both tyres |
| US4821626A (en) * | 1982-10-29 | 1989-04-18 | Ranco Incorporated Of Delaware | Pressostat for pressure sensitive activation |
| US6633010B2 (en) * | 2001-03-19 | 2003-10-14 | Texas Instruments Incorporated | Compact, sealed pressure switch |
| CN2829062Y (en) * | 2005-09-30 | 2006-10-18 | 陈自杞 | Pressure switch valve |
| CN201301991Y (en) * | 2008-11-14 | 2009-09-02 | 西安长庆科技工程有限责任公司 | Pneumatic extinguishing protection isolating valve with alarm output |
| CN202384255U (en) * | 2012-01-18 | 2012-08-15 | 重庆生普石油设备制造有限公司 | High-reliability pressure switch for deep well |
-
2012
- 2012-01-18 CN CN201210015516.4A patent/CN102543570B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2941734A1 (en) * | 1979-10-15 | 1981-04-23 | Kienzle Apparate Gmbh, 7730 Villingen-Schwenningen | Pressure switch which warns of low pressure - is for double tyres of motor vehicle and has reliable separation between both tyres |
| US4821626A (en) * | 1982-10-29 | 1989-04-18 | Ranco Incorporated Of Delaware | Pressostat for pressure sensitive activation |
| US6633010B2 (en) * | 2001-03-19 | 2003-10-14 | Texas Instruments Incorporated | Compact, sealed pressure switch |
| CN2829062Y (en) * | 2005-09-30 | 2006-10-18 | 陈自杞 | Pressure switch valve |
| CN201301991Y (en) * | 2008-11-14 | 2009-09-02 | 西安长庆科技工程有限责任公司 | Pneumatic extinguishing protection isolating valve with alarm output |
| CN202384255U (en) * | 2012-01-18 | 2012-08-15 | 重庆生普石油设备制造有限公司 | High-reliability pressure switch for deep well |
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| Publication number | Publication date |
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| CN102543570A (en) | 2012-07-04 |
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