CN205618151U - Pressure measurement in pit - Google Patents
Pressure measurement in pit Download PDFInfo
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- CN205618151U CN205618151U CN201620390000.1U CN201620390000U CN205618151U CN 205618151 U CN205618151 U CN 205618151U CN 201620390000 U CN201620390000 U CN 201620390000U CN 205618151 U CN205618151 U CN 205618151U
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Abstract
The utility model relates to a pressure detection technical field, concretely relates to pressure measurement in pit who is used for the permanent coal seam gas detection survey of deep well environment, the device is including the last connector, axle form main part and the lower connector that connect gradually. The utility model discloses a pressure measurement in pit's fluid passage vertically sets up, be favorable to the miniaturization of whole device, be equipped with first cavity and the second cavity that is used for holding pressure sensor and cable conductor respectively in the axle form main part, first cavity is through first perforating hole and fluid passage intercommunication, the second cavity passes through second perforating hole and first cavity intercommunication, cable conductor one end is passed the second perforating hole and is connected with pressure sensor body electricity, the other end is outside from second cavity projecting shaft form main part, be favorable to whole device to have the winding displacement problem that the required cable conductor of range signal far away transmission had been solved simultaneously to better gas tightness.
Description
Technical field
This utility model relates to technical field of pressure detection, is specifically related to the underground pressure force checking device that a kind of permanent coal bed gas for deep-well environment detects.
Background technology
The exploration and development flow process of coal bed gas mainly includes drilling well, completion and mining stage, and mining is the important step of cbm development.Correlation theory both domestic and external research and practical experience show: the down-hole pressure data during CBM Drainage removes are most important, and it is to judge mining accident and formulate the important parameter of rational mining technique.Based on this, the most relevant scholar and company have developed some relevant pressure bombs and detect down-hole pressure data in real time, but owing to being limited by dimensional space, signal transmission distance and air-proof condition etc., existing product is undesirable close to the down-hole pressure detection method Detection results of the coal bed gas extraction well of 3000 meters in the degree of depth, the especially long-distance transmissions aspect of sealing property and signal.
In consideration of it, overcome above defect of the prior art, it is provided that the underground pressure force checking device that a kind of permanent coal bed gas for deep-well environment detects becomes the technical problem that this area is urgently to be resolved hurrily.
Summary of the invention
The purpose of this utility model is the drawbacks described above for prior art, it is provided that a kind of underground pressure force checking device.
The purpose of this utility model can be realized by following technical measures:
A kind of underground pressure force checking device, compared with prior art, its difference is, this device includes upper connector, shaft-like main body and the lower connector being sequentially connected with；Wherein, described pressure-detecting device has the fluid passage extended along its central shaft, the most through upper connector in described fluid passage, shaft-like main body and lower connector；Described shaft-like main body is provided with the first chamber, the second chamber, extends to the first through hole of described first chamber from described fluid passage and extend to the second through hole of described second chamber from described first chamber；Described first chamber is disposed with pressure transducer, the end of measuring of pressure transducer is positioned at the end of described first through hole side in the first chamber so that described measurement end is exposed in fluid, is provided with the first sealing member between the body of pressure transducer and the first chamber inner wall；Being disposed with cable in described second chamber, be provided with seal between the inwall of described cable and the second chamber, described cable one end is through the second through hole electrically connects with pressure sensor body, the other end stretches out shaft-like body exterior from the second chamber.
Preferably, described seal includes seal body, the gland being located at seal body upper end and is located at the intrinsic sealing ring of seal, seal body and gland all offer cable-through hole, the cable-through hole inwall of described seal body offers the cannelure for accommodating sealing ring, gland inserts seal body until contacting with described sealing ring from the top of seal body, and the cable-through hole of seal body connects formation passing channel with the cable-through hole of gland.
Preferably, described seal is additionally provided with the hold-down bolt of at least one longitudinal extension.
Preferably, described first chamber extends radially to shaft-like body outer surface from one end of the first through hole side along shaft-like main body, described first chamber is stepped, it is divided into first paragraph, second segment and the 3rd section successively from one end to the one end away from the first through hole near the first through hole, the measurement end of pressure transducer is contained in first paragraph, the body of pressure transducer is contained in second segment, is provided with sealing-plug in the 3rd section.
Preferably, it is provided with the second sealing member between described sealing-plug and second segment and the junction of the 3rd section.
Preferably, described detection device also includes that at least one is sheathed on the securing member of described upper connecting portion, for fixing the external part that cable stretches out from the second chamber.
Preferably, described upper connector outer surface offers the groove for accommodating described securing member.
Preferably, the upper end of described shaft-like main body is connected by threaded engagement with described upper connector, and the lower end of described shaft-like main body is connected by threaded engagement with described lower connector.
Preferably, described shaft-like main body upper end forms depressed part, and the lower end of described upper connector forms the lobe coordinated with shaft-like body depression portion.
Preferably, described shaft-like main body lower end forms lobe, and the upper end of described lower connector forms the depressed part with shaft-like main body raised portion fits.
The fluid passage of underground pressure force checking device of the present utility model is longitudinally disposed, be conducive to the miniaturization of whole device, shaft-like main body is provided with and is respectively used to accommodate pressure transducer and the first chamber of cable and the second chamber, first chamber is connected with fluid passage by the first through hole, second chamber passes through the second through hole and the first chamber, cable one end electrically connects through the second through hole with pressure sensor body, the other end stretches out shaft-like body exterior from the second chamber, be conducive to whole device to have better air-tightness and solve the winding displacement problem of cable needed for distant signal transmission simultaneously.
Accompanying drawing explanation
Fig. 1 is the front view of pressure-detecting device of the present utility model.
Fig. 2 is the partial enlarged drawing of pressure-detecting device of the present utility model.
Fig. 3 is the side view of pressure-detecting device of the present utility model.
Fig. 4 is the front view of seal in pressure-detecting device of the present utility model.
Fig. 5 is the top view of seal in pressure-detecting device of the present utility model.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearer, with specific embodiment, this utility model is described in further detail below in conjunction with the accompanying drawings.Should be appreciated that specific embodiment described herein, only in order to explain this utility model, is not used to limit this utility model.
Hereinafter, many aspects of the present utility model will be more fully understood that with reference to accompanying drawing.Parts in accompanying drawing are not necessarily drawn to scale.Alternatively, it is preferred that emphasis is clearly demonstrate parts of the present utility model.Additionally, in some views in the accompanying drawings, identical reference indicates corresponding part.
" exemplary " or " illustrative " represents as example, example or explanation as used herein, the word.Any embodiment being described herein as " exemplary " or " illustrative " is not necessarily to be construed as relative to other embodiment being preferred or favourable.All embodiments described below are illustrative embodiments, thering is provided these illustrative embodiments is that the scope of the present disclosure is defined by the claims so that those skilled in the art make and use embodiment of the disclosure and expect and be not limiting as the scope of the present disclosure.In other embodiments, describe in detail known to feature and method not obscure this utility model.For purpose described herein, term " on ", D score, "left", "right", "front", "rear", " vertically ", " level " with its derivative words by relevant with the utility model that such as Fig. 1 orients.And, have no intent to be limited by any theory expressed or imply be given in technical field above, background technology, summary of the invention or detailed description below.Should also be clear that the concrete device described in shown in the drawings and discussion below book and process are the simple examples embodiments of the utility model design limited in the following claims.Therefore, the concrete size relevant to presently disclosed embodiment and other physical features are understood not to restrictive, unless claims are stated the most clearly.
Fig. 1 shows a kind of underground pressure force checking device 100, this device 100 includes: upper connector 20, shaft-like main body 10 and lower connector 30, this device 100 has along the fluid passage 101 that its central shaft extends, when device 100 is placed in deep-well bottom, gas flows through this fluid passage 101, the most through upper connector 20 in this fluid passage 101, shaft-like main body 10 and lower connector 30.
Shaft-like main body 10 has on upper end 11 and lower end 12, upper end 11 and lower end 12 and is carved with screw thread, and upper connector 20 and lower connector 30 are all threadingly engaged in shaft-like main body 10.In a preferred embodiment, the upper end 11 of shaft-like main body 10 forms depressed part, and the lower end of upper connector 20 forms the lobe coordinated with the depressed part of upper end 11, and the screw thread of upper end 11 carves the surface in its depressed part.The lower end 12 of shaft-like main body 10 forms lobe, and the upper end of lower connector 30 forms the depressed part of the raised portion fits with lower end 12, and the screw thread of lower end 12 carves the surface in its lobe.
Refer to shown in Fig. 1, Fig. 2 and Fig. 3, shaft-like main body 10 is provided with the first chamber the 13, second chamber the 14, first through hole 15 and the second through hole 16, first through hole 15 extends to the first chamber 13 from fluid passage 101, and the second through hole 16 extends to the second chamber 14 from the first chamber 13.First chamber 13 is disposed with pressure transducer 40, the measurement end 40a of pressure transducer 40 is positioned at the end of the first through hole 15 side so that measuring end 40a and being exposed in fluid in the first chamber 13, is provided with the first sealing member 51 between the body 40b of pressure transducer 40 and the first chamber 13 inwall.Second chamber 14 is disposed with cable 60, being provided with seal 70 between cable 60 and the inwall of the second chamber 14, it is outside that cable 60 one end electrically connects through the second through hole 16 with the body 40b of pressure transducer 40, the other end stretches out shaft-like main body 10 from the second chamber 14.Be positioned at down-hole pipe nipple (including measurement apparatus 100) measure to data be real-time transmitted to earth's surface host computer through cable 60, and transmission range is 3000 meters farthest, being provided with software in host computer, the data that can send over down-hole short circuit carry out the real-time display of oscillogram mode.In a preferred embodiment, first chamber 13 extends radially to shaft-like main body 10 outer surface from one end of the first through hole 15 side along shaft-like main body 10, first chamber 13 is stepped, it is divided into first paragraph 13a from the one end near the first through hole 15 successively to the one end away from the first through hole 15, second segment 13b and the 3rd section of 13c, the measurement end 40a of pressure transducer 40 is contained in first paragraph 13a, such as, the inwall measuring end 40a and first paragraph 13a forms threaded engagement, the body 40b of pressure transducer 40 is contained in second segment 13b, it is provided with sealing-plug 80 in 3rd section of 13c, the second sealing member 52 it is provided with between the junction of sealing-plug 80 and second segment 13b and the 3rd section of 13c.Sealing-plug the 80, first sealing member 51 and the second sealing member 52 ensure that the first chamber 13 is formed and seal the measurement end 40a exposure in space, only pressure transducer 40 in a fluid.The end face of sealing-plug 80 can be machined with square groove, to facilitate employing inner hexagon spanner just unloading.
Refer to shown in Fig. 4 and Fig. 5, seal 70 includes seal body 71, gland 72, sealing ring 73, gland 72 is located at seal body 71 upper end, sealing ring 73 is located in seal body 71, seal body 71 and gland 72 offer cable-through hole 71a respectively, cable-through hole 71b, the cable-through hole 71a inwall of seal body 71 offers the cannelure for accommodating sealing ring 73, sealing ring 73 is arranged in cannelure, gland 72 inserts seal body 71 until contacting with sealing ring 73 from the top of seal body 71, the cable-through hole 71a of seal the body 71 and cable-through hole 72a of gland 72 connects formation passing channel, cable 60 is arranged in this passing channel.Being additionally provided with the hold-down bolt 74 along its longitudinal extension in seal 70, such as, the quantity of hold-down bolt 74 is 4, is circumferentially uniformly distributed.By sealing ring 73 crimp, thus the sealing to cable 60 can be realized while utilizing four hold-down bolts 74 gland 72 and seal body 71 to be compressed.Four hold-down bolt 74 tops all have square groove, and convenient use inner hexagon spanner carries out unloading.Referring to shown in Fig. 4, a total of 8 holes on seal 70, wherein four are used by four hold-down bolts 74 by screwed hole, and four additional is through hole, are used for using fixing bolt that seal 70 is fixed on shaft-like main body 10.Seal 70 can also be along the most two or more to arranging.
In a preferred embodiment, being arranged with securing member 90 outside upper connecting portion 20, securing member 90 is for fixing the external part that cable 60 stretches out from the second chamber 14.Securing member 90 can arrange one or more, such as, and two.In order to avoid encountering drill hole inner wall owing to securing member 90 is oversize, upper connector 20 outer surface offers the groove for accommodating securing member 90.
The foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model, all any amendment, equivalent and improvement etc. made within spirit of the present utility model and principle, within should be included in protection domain of the present utility model.
Claims (10)
1. a underground pressure force checking device, it is characterised in that this device includes upper connector, shaft-like main body and the lower connector being sequentially connected with；Wherein, described pressure-detecting device has the fluid passage extended along its central shaft, the most through upper connector in described fluid passage, shaft-like main body and lower connector；Described shaft-like main body is provided with the first chamber, the second chamber, extends to the first through hole of described first chamber from described fluid passage and extend to the second through hole of described second chamber from described first chamber；Described first chamber is disposed with pressure transducer, the end of measuring of pressure transducer is positioned at the end of described first through hole side in the first chamber so that described measurement end is exposed in fluid, is provided with the first sealing member between the body of pressure transducer and the first chamber inner wall；Being disposed with cable in described second chamber, be provided with seal between the inwall of described cable and the second chamber, described cable one end is through the second through hole electrically connects with pressure sensor body, the other end stretches out shaft-like body exterior from the second chamber.
Underground pressure force checking device the most according to claim 1, it is characterized in that, described seal includes seal body, the gland being located at seal body upper end and is located at the intrinsic sealing ring of seal, seal body and gland all offer cable-through hole, the cable-through hole inwall of described seal body offers the cannelure for accommodating sealing ring, gland inserts seal body until contacting with described sealing ring from the top of seal body, and the cable-through hole of seal body connects formation passing channel with the cable-through hole of gland.
Underground pressure force checking device the most according to claim 2, it is characterised in that described seal is additionally provided with the hold-down bolt of at least one longitudinal extension.
Underground pressure force checking device the most according to claim 1, it is characterized in that, described first chamber extends radially to shaft-like body outer surface from one end of the first through hole side along shaft-like main body, described first chamber is stepped, it is divided into first paragraph, second segment and the 3rd section successively from one end to the one end away from the first through hole near the first through hole, the measurement end of pressure transducer is contained in first paragraph, and the body of pressure transducer is contained in second segment, is provided with sealing-plug in the 3rd section.
Underground pressure force checking device the most according to claim 4, it is characterised in that be provided with the second sealing member between described sealing-plug and second segment and the junction of the 3rd section.
Underground pressure force checking device the most according to claim 1, it is characterised in that described detection device also includes that at least one is sheathed on the securing member of described upper connecting portion, for fixing the external part that cable stretches out from the second chamber.
Underground pressure force checking device the most according to claim 6, it is characterised in that described upper connector outer surface offers the groove for accommodating described securing member.
Underground pressure force checking device the most according to claim 1, it is characterised in that the upper end of described shaft-like main body is connected by threaded engagement with described upper connector, the lower end of described shaft-like main body is connected by threaded engagement with described lower connector.
Underground pressure force checking device the most according to claim 8, it is characterised in that described shaft-like main body upper end forms depressed part, the lower end of described upper connector forms the lobe coordinated with shaft-like body depression portion.
Underground pressure force checking device the most according to claim 8, it is characterised in that described shaft-like main body lower end forms lobe, the upper end of described lower connector forms the depressed part with shaft-like main body raised portion fits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620390000.1U CN205618151U (en) | 2016-05-04 | 2016-05-04 | Pressure measurement in pit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620390000.1U CN205618151U (en) | 2016-05-04 | 2016-05-04 | Pressure measurement in pit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205618151U true CN205618151U (en) | 2016-10-05 |
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ID=57025104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620390000.1U Expired - Fee Related CN205618151U (en) | 2016-05-04 | 2016-05-04 | Pressure measurement in pit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205618151U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105756666A (en) * | 2016-05-04 | 2016-07-13 | 中国地质大学（武汉） | Downhole pressure detecting device |
| CN107448186A (en) * | 2017-09-27 | 2017-12-08 | 中国地质大学（武汉） | A kind of drilling well three-dimensional force sensor based on six side chain parallel institutions |
-
2016
- 2016-05-04 CN CN201620390000.1U patent/CN205618151U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105756666A (en) * | 2016-05-04 | 2016-07-13 | 中国地质大学（武汉） | Downhole pressure detecting device |
| CN107448186A (en) * | 2017-09-27 | 2017-12-08 | 中国地质大学（武汉） | A kind of drilling well three-dimensional force sensor based on six side chain parallel institutions |
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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: 20161005 Termination date: 20170504 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |