CN104100255A - Skid-mounted multi-well automatic well-selection metering device special for coal bed gas - Google Patents
Skid-mounted multi-well automatic well-selection metering device special for coal bed gas Download PDFInfo
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- CN104100255A CN104100255A CN201310127793.9A CN201310127793A CN104100255A CN 104100255 A CN104100255 A CN 104100255A CN 201310127793 A CN201310127793 A CN 201310127793A CN 104100255 A CN104100255 A CN 104100255A
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Abstract
The invention discloses a skid-mounted multi-well automatic well-selection metering device special for coal bed gas, and belongs to the field of coal bed gas field ground engineering. The automatic well-selection metering device at least comprises a multi-well well-selection metering system, a fuel gas metering system, an intelligent control cabinet, a base, a relevant circuit and a relevant pipeline, wherein the multi-well well-selection metering system and the fuel gas metering system are communicated through a main output pipeline of the relevant pipeline, are integrated with the intelligent control cabinet on the base in a skid-mounting way, are arranged close to the well hole area of a coal bed gas field, and are connected with a single-well incoming gas pipeline and an output production manifold to gather and transport coal bed gas. Through the combination of the automatic well-selection system, the automatic metering system and the automatic monitoring system, low-cost development and long-period unattended operation of a coal bed gas gathering and transportation metering system are realized, and the labor cost is lowered. Well selection automation is easy and reliable to control, convenience is brought to overall migration, the field construction workload is reduced, the floor area is small, and the construction period is short.
Description
Technical field
The present invention relates to ground surface works field, coal bed gas gas field, particularly the special-purpose many wells of skid-mounted of a kind of coal bed gas automatic well-selecting metering device.
Background technology
Coal bed gas claims again " gas ", and its main component is methane, and calorific value is 2-5 times of general coal, calorific value and natural gas are suitable, can be mixed defeated mixed with natural gas, and also very clean after burning, producing hardly any waste gas, is first-class industry, chemical industry, generating and the resident living clean type energy.
Skid-mounted type refers to functional unit is integrated on a unsplit bedplate, can integral installation, mobile a kind of integration mode, use crowbar just can move easily, in place.
Coal bed gas gas field surface construction is according to the difference of geology well pattern, and the measuring station that different well formulas are set as required carries out the multiple functions such as the defeated and geology desired data collection of coal bed gas collection, as a joint that connects individual well and treatment system.At present, coal bed gas gas field measuring station mainly adopts and manually selects well measuring station, automatic well-selecting measuring station and multiple-way valve measuring station.Wherein, it is severe that automatic well-selecting measuring station is mainly used in weather conditions, the measuring station of unattended duty, adopt tee ball valve automatic well-selecting, automatic gauge, by Central Control Room, operate, on-the-spot remote terminal control system (RTU) is according to instruction data acquisition, processing, by signal leading data acquisition and supervisor control (SCADA).
In realizing process of the present invention, inventor finds that prior art at least exists following problem:
Adopt above-mentioned traditional coal seam gas gas field surface construction project, cost of investment is high, and site operation workload is large, and floor space is large, and the construction period is long, especially builds up rear on-the-spot polling period long, and labor strength and having a big risk needs to drop into a large amount of manpower and materials.
Summary of the invention
In order to solve the problem of prior art, the embodiment of the present invention provides the special-purpose many wells of skid-mounted of a kind of coal bed gas automatic well-selecting metering device.Automatic well-selecting metering device is integrated in one, manufacture assembling in factory after, be placed near the well head block of coal bed gas gas field, connect many mouthfuls of individual wells and come gas pipeline and outer defeated production manifold, carry out coal bed gas collection defeated, realize coal bed gas efficient, fast, low cost development.Described technical scheme is as follows:
The special-purpose many wells of skid-mounted of a coal bed gas automatic well-selecting metering device, described automatic well-selecting metering device at least comprises: many wells select well metering system, fuel gas metering system, Intelligent control cabinet, base and interlock circuit, associated pipe; Described many wells select well metering system and described fuel gas metering system to be communicated with by total export pipeline of described associated pipe, be integrated on described base with skid-mounted type with described Intelligent control cabinet, be placed near the well head block of coal bed gas gas field, connect many mouthfuls of individual wells and come gas pipeline and outer defeated production manifold, defeated in order to coal bed gas collection.
Particularly, described associated pipe at least comprises: the blow-down pipe of the first individual well admission line, the second individual well admission line, the 3rd individual well admission line, the 4th individual well admission line, the 5th individual well admission line, the 6th individual well admission line, the 7th individual well admission line, total export pipeline, metering pipeline, fuel gas metering pipeline, fuel gas metering bypass line, device.
Particularly, described many wells select well metering system at least to comprise: the first individual well admission line ball valve, the second individual well admission line ball valve, the 3rd individual well admission line ball valve, the 4th individual well admission line ball valve, the 5th individual well admission line ball valve, the 6th individual well admission line ball valve, the 7th individual well admission line ball valve, select well main body access hole, blow-down pipe stop valve, metering pipeline inlet ball valve, vortex precession flowmeter, superpressure preventing rupture disk, metering pipeline vent ball valve, total export pipeline exit butterfly valve, total export pipeline outlet non-return valve, reserved purging or note alcohol mouth ball valve and YE, select well main body.
Particularly, described choosing is provided with several individual well air inlet ports and a total delivery outlet and a metering outlet in well main body, one end of described the first individual well admission line, described the second individual well admission line, described the 3rd individual well admission line, described the 4th individual well admission line, described the 5th individual well admission line, described the 6th individual well admission line and described the 7th individual well admission line selects the individual well air inlet port in well main body to be connected with described respectively, and the many mouthfuls of individual wells that the other end of described each admission line connects coal bed gas gas field well head block carry out gas pipeline, described the first individual well admission line, described the second individual well admission line, described the 3rd individual well admission line, described the 4th individual well admission line, described the 5th individual well admission line, on described the 6th individual well admission line and described the 7th individual well admission line, be separately installed with described the first individual well admission line ball valve, described the second individual well admission line ball valve, described the 3rd individual well admission line ball valve, described the 4th individual well admission line ball valve, described the 5th individual well admission line ball valve, described the 6th individual well admission line ball valve, described the 7th individual well admission line ball valve, described well main body one side of selecting is provided with the described well main body access hole that selects.
Particularly, the described well main body of selecting connects described YE, and described YE connects described Intelligent control cabinet by interlock circuit, and described YE, described Intelligent control cabinet are integrated into single control module; Described YE is the described Power Drive Unit that selects well main body, receive described Intelligent control cabinet control command, in conjunction with described intelligent vortex precession flowmeter, carry out on the spot and the select well operations of Long-distance Control to a plurality of well head automatic well-selectings, automatic gauge, automatic monitoring.
Particularly, the described total delivery outlet arranging in well main body that selects is communicated with described total export pipeline, the described described metering pipeline of metering outlet connection arranging in well main body that selects; The blow-down pipe that is communicated with described device on the section of described total export pipeline before being communicated with described fuel gas metering pipeline, is provided with described blow-down pipe stop valve on the blow-down pipe of described device.
Particularly, the tail end of described metering pipeline is communicated with described total export pipeline, on described metering pipeline, be provided with in turn described metering pipeline inlet ball valve, described vortex precession flowmeter, described rupture disk, described metering pipeline vent ball valve for superpressure preventing, on the last outlet section of described total export pipeline, be provided with in turn described total export pipeline exit butterfly valve, described total export pipeline outlet non-return valve, described reserved purging or note alcohol mouth ball valve.
Particularly, described fuel gas metering system at least comprises: fuel gas metering pipeline by-pass governing needle valve, fuel gas metering pipeline inlet ball valve, dehydrator filter, pressure-regulating valve, gas meter, fuel use gas metering pipeline vent ball valve, fuel use gas metering pipeline delivery gauge and associated pipe fuel gas metering pipeline, fuel gas metering bypass line; In addition defeated fuel gas dehydration and metering operation for described fuel gas metering system.
Particularly, described fuel gas metering pipeline is communicated with described total export pipeline, is connected with in turn described fuel gas metering pipeline inlet ball valve, described dehydrator filter, described pressure-regulating valve, described gas meter, described fuel use gas metering pipeline vent ball valve, described fuel use gas metering pipeline delivery gauge on described fuel gas metering pipeline.
Particularly, on described fuel gas metering pipeline, be parallel with described fuel gas metering bypass line, one end of described fuel gas metering bypass line is connected on the section between described fuel use gas metering pipeline vent ball valve and described fuel use gas metering pipeline delivery gauge, the other end is communicated with described total export pipeline, and described fuel gas metering pipeline by-pass governing needle valve is installed on described fuel gas metering bypass line.
Further, described vortex precession flowmeter is selected intelligent vortex precession flowmeter.
Further, described YE adopts planetary gear transmission mechanism, and the rotation of motor is done to 360 ° of rotations through transmission mechanism band movable valve plug.
Further, described many wells of skid-mounted automatic well-selecting metering device outer setting has heat insulating material, selects steel framework to support stay-warm case and forms whole cover type room type insulation construction, and type top, described room is slope moulding.
The beneficial effect that the technical scheme that the embodiment of the present invention provides is brought is:
The embodiment of the present invention selects well metering system and fuel gas metering system to be communicated with by total export pipeline in many wells, and be integrated in a unsplit bedplate IV with skid-mounted type with Intelligent control cabinet, can manufacture assembling in factory after, be placed near the well head block of coal bed gas gas field, connect many mouthfuls of individual wells and come gas pipeline and outer defeated production manifold, carry out coal bed gas collection defeated.Compare with traditional well head metering pipeline system, by the combination of automatic well-selecting system, automatic metering system, automatic monitored control system, improved construction class, realize low cost development and the long period unmanned of the defeated metering system of coal bed gas collection, reduce cost of labor.Select well automation to control simple and reliable, be convenient to bulk migration, site operation workload reduces, and floor space is little, and the construction period is short.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing of required use during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the front view of the special-purpose many wells of skid-mounted of the coal bed gas that provides of embodiment of the present invention automatic well-selecting metering device structural representation;
Fig. 2 is the top view of the special-purpose many wells of skid-mounted of the coal bed gas that provides of embodiment of the present invention automatic well-selecting metering device structural representation;
Fig. 3 is the left view of the special-purpose many wells of skid-mounted of the coal bed gas that provides of embodiment of the present invention automatic well-selecting metering device structural representation;
Fig. 4 is the operating principle schematic diagram of the special-purpose many wells of skid-mounted of the coal bed gas that provides of embodiment of the present invention automatic well-selecting metering device.
In figure, each symbol represents that implication is as follows:
The many wells of I select well metering system;
1 first individual well admission line ball valve, 2 second individual well admission line ball valves, 3 the 3rd individual well admission line ball valves, 4 the 4th individual well admission line ball valves, 5 the 5th individual well admission line ball valves, 6 the 6th individual well admission line ball valves, 7 the 7th individual well admission line ball valves, 8 select well main body access hole, 9 blow-down pipe stop valves, 10 metering pipeline inlet ball valves, 11 vortex precession flowmeters, 12 superpressure preventing rupture disks, 13 metering pipeline vent ball valves, 14 total export pipeline exit butterfly valves, 15 total export pipeline outlet non-return valves, 16 reserved purgings or note alcohol mouth ball valve, 24 YEs, 25 select well main body,
A the first individual well admission line, B the second individual well admission line, C the 3rd individual well admission line, D the 4th individual well admission line, E the 5th individual well admission line, F the 6th individual well admission line, G the 7th individual well admission line, the total export pipeline of H, I measures pipeline, the blow-down pipe of L device, M the 8th individual well admission line;
II fuel gas metering system;
17 fuel gas metering pipeline by-pass governing needle valves, 18 fuel gas metering pipeline inlet ball valves, 19 dehydrator filters, 20 pressure-regulating valves, 21 gas meters, 22 fuel use gas metering pipeline vent ball valves, 23 fuel use gas metering pipeline delivery gauges;
J fuel gas metering pipeline, K fuel gas metering bypass line;
III Intelligent control cabinet;
IV base.
In figure, the direction of arrow is coal bed gas flow path direction.
The specific embodiment
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing, embodiment of the present invention is described further in detail.
Shown in Fig. 1, Fig. 2, Fig. 3, the embodiment of the present invention provides the special-purpose many wells of skid-mounted of a kind of coal bed gas automatic well-selecting metering device, and this automatic well-selecting metering device at least comprises: many wells select the parts such as well metering system I, fuel gas metering system II, Intelligent control cabinet III, base IV and interlock circuit, associated pipe; Described associated pipe at least comprises: the blow-down pipe L of the first individual well admission line A, the second individual well admission line B, the 3rd individual well admission line C, the 4th individual well admission line D, the 5th individual well admission line E, the 6th individual well admission line F, the 7th individual well admission line G, total export pipeline H, metering pipeline I, fuel gas metering pipeline J, fuel gas metering bypass line K, device etc.
Particularly, as preferably, described many wells select well metering system I and fuel gas metering system II independent separately, by total export pipeline H, be communicated with, and with skid-mounted type, be integrated in a unsplit bedplate IV in one together with Intelligent control cabinet III, be placed near the well head block of coal bed gas gas field manufacture assembling in factory after, connect many mouthfuls of individual wells and come gas pipeline and outer defeated production manifold, carry out coal bed gas collection defeated, can use crowbar to carry out easily integrated moving, in place; It is the nucleus module of Intelligent Selection well control system that described Intelligent control cabinet III adopts existing advanced person's single-chip microcomputer C8051F020 technology, control multiple-way valve start and stop work, realize manual/auto well selection and valve position, by Intelligent control cabinet III, control many wells and select well metering system I to realize on the spot and many wells automatic well-selecting position of Long-distance Control coal bed gas, selection valve position, automatic gauge, monitoring and collection transmission function; And dewater and measure operation by the external defeated fuel gas of fuel gas metering system II, this automatic well-selecting metering device various functions all can reach original well head metering pipeline system index.
Simultaneously shown in Figure 4, particularly, described many wells select well metering system I at least to comprise: the first individual well admission line ball valve 1, the second individual well admission line ball valve 2, the 3rd individual well admission line ball valve 3, the 4th individual well admission line ball valve 4, the 5th individual well admission line ball valve 5, the 6th individual well admission line ball valve 6, the 7th individual well admission line ball valve 7, select well main body access hole 8, blow-down pipe stop valve 9, metering pipeline inlet ball valve 10, vortex precession flowmeter 11, rupture disk 12 for superpressure preventing, metering pipeline vent ball valve 13, total export pipeline exit butterfly valve 14, total export pipeline outlet non-return valve 15, reserved purging or note alcohol mouth ball valve 16 and YE 24, select well main body 25 component such as grade, described choosing is provided with several individual well air inlet ports and a total delivery outlet and a metering outlet in well main body 25, one end of described the first individual well admission line A, the second individual well admission line B, the 3rd individual well admission line C, the 4th individual well admission line D, the 5th individual well admission line E, the 6th individual well admission line F and the 7th individual well admission line G be connected with selecting the individual well air inlet port in well main body 25 respectively, the many mouthfuls of individual wells that the other end of described each admission line connects coal bed gas gas field well head block carry out gas pipeline, and, on described the first individual well admission line A, the second individual well admission line B, the 3rd individual well admission line C, the 4th individual well admission line D, the 5th individual well admission line E, the 6th individual well admission line F and the 7th individual well admission line G, be separately installed with the first individual well admission line ball valve 1, the second individual well admission line ball valve 2, the 3rd individual well admission line ball valve 3, the 4th individual well admission line ball valve 4, the 5th individual well admission line ball valve 5, the 6th individual well admission line ball valve 6, the 7th individual well admission line ball valve 7, describedly select well main body 25 1 sides to be provided with to select well main body access hole 8.
Particularly, the described well main body 25 of selecting connects YE 24, YE 24 connects Intelligent control cabinet III by interlock circuit, YE 24, Intelligent control cabinet III are integrated into single control module, described YE 24 selects the Power Drive Unit of well main body 25 for numerical control, after receiving Intelligent control cabinet III control command, combined with intelligent vortex precession flowmeter 11, carries out the well operations that selects of automatic well-selectings, automatic gauge, automatic monitoring to a plurality of well heads; The described total delivery outlet arranging in well main body 25 that selects is communicated with total export pipeline H, selects the metering outlet arranging in well main body 25 to be communicated with metering pipeline I simultaneously; The suitable position of described total export pipeline H, is arranged on the blow-down pipe L that is communicated with communication apparatus on fuel gas metering pipeline J section before that is, on the blow-down pipe L of described device, blow-down pipe stop valve 9 is installed; The tail end of described metering pipeline I is communicated with total export pipeline H, on described metering pipeline I, be provided with in turn metering pipeline inlet ball valve 10, vortex precession flowmeter 11, rupture disk 12, metering pipeline vent ball valve 13 for superpressure preventing, described vortex precession flowmeter 11 is main metering system, implements selecting the metering on gas well gas road; On the last outlet section of described total export pipeline H, be provided with in turn total export pipeline exit butterfly valve 14, total export pipeline outlet non-return valve 15, reserved purging or note alcohol mouth ball valve 16.
Particularly, described fuel gas metering system II at least comprises: the component such as fuel gas metering pipeline by-pass governing needle valve 17, fuel gas metering pipeline inlet ball valve 18, dehydrator filter 19, pressure-regulating valve 20, gas meter 21, fuel use gas metering pipeline vent ball valve 22, fuel use gas metering pipeline delivery gauge 23 and associated pipe fuel gas metering pipeline J, fuel gas metering bypass line K etc.; Described fuel gas metering pipeline J is communicated with total export pipeline H, installs in turn and be connected with fuel gas metering pipeline inlet ball valve 18, dehydrator filter 19, pressure-regulating valve 20, gas meter 21, fuel use gas metering pipeline vent ball valve 22, fuel use gas metering pipeline delivery gauge 23 on fuel gas metering pipeline J; And, on fuel gas metering pipeline J, be parallel with fuel gas metering bypass line K, one end of described fuel gas metering bypass line K is connected on the section between fuel use gas metering pipeline vent ball valve 22 and fuel use gas metering pipeline delivery gauge 23, the other end is communicated with total export pipeline H, and fuel gas metering pipeline by-pass governing needle valve 17 is installed on described fuel gas metering bypass line K.Described fuel gas metering system II is for outer defeated fuel gas dehydration and metering operation.
Described all kinds of ball valve, butterfly valve, flap valve, needle valve, and vortex precession flowmeter 11, rupture disk 12 for superpressure preventing, dehydrator filter 19, pressure-regulating valve 20, gas meter 21, fuel use gas metering pipeline delivery gauge 23, YE 24 etc. are prior art, buyable.Described vortex precession flowmeter 11 is selected intelligent vortex precession flowmeter, realizes the accurate measurement to gas, meets outer delivery of energy source control and trade transaction metering, business accounting.Described YE 24 adopts planetary gear transmission mechanism, and the rotation of motor is done to 360 ° of rotations through transmission mechanism band movable valve plug.
In addition, many wells of embodiment of the present invention skid-mounted automatic well-selecting metering device outer setting has heat insulating material, adopt steel framework to support the monolithic room type insulation construction that stay-warm case forms, to integrated skid-mounted, selecting well metering device to carry out integral body covers, the heat insulation function of well metering device is selected in realization to whole skid-mounted, and the top of this device can be designed to slope moulding, prevent long-pending rain accumulated snow.
Shown in Figure 4, the operating principle of the embodiment of the present invention: each road individual well of coal bed gas gas field comes gas through the first individual well admission line A, the second individual well admission line B, the 3rd individual well admission line C, the 4th individual well admission line D, the 5th individual well admission line E, the 6th individual well admission line F, the 7th individual well admission line G Ji Ge road ball valve 1-7 enters many wells and selects well main body 25, by intelligent controller in Intelligent control cabinet III, implement YE 24 to control, carry out automatic well-selecting operation, each road individual well comes gas after automatic well-selecting, by vortex precession flowmeter 11, realizing many wells in turn measures, wherein a bite well measures by vortex precession flowmeter 11 from metering pipeline I outlet through metering pipeline inlet ball valve 10 by metering pipeline I, when pressure surpasses after safe pressure, can use rupture disk 12 automatically to protect pipe-line system by superpressure preventing, then through metering pipeline vent ball valve 13, import total export pipeline H, and converge in total export pipeline H outlet with other each road wells, then through total export pipeline H exit butterfly valve 14, total export pipeline outlet non-return valve 15 enters gas gathering line.Always on export pipeline H, be provided with reserved purging or noting alcohol mouth 16 and can purge and note alcohol use to the pipeline of this many wells automatic well-selecting metering device; The blow-down pipe L of the device that described and total export pipeline H is communicated with, can carry out emptying manipulation by blow-down pipe stop valve 9; Fuel use gas is by measuring pipeline J at the coconnected fuel gas of total export pipeline H, through fuel gas metering pipeline inlet ball valve 18, enter dehydrator filter 19, by dehydrator filter 19, realize initial gross separation moisture in fuel gas and coal bed gas and carry out dewatering and filtering and be dried, then through pressure-regulating valve 20, by gas meter 21, carry out the metering of fuel gas, finally by fuel use gas metering pipeline vent ball valve 22, go to fuel outer defeated with air pipe; The fuel use gas metering pipeline delivery gauge 23 that fuel gas metering pipeline J outlet arranges is indicated on the spot for pressure; The described fuel gas metering bypass line K being communicated with fuel gas metering pipeline J measures pipeline by-pass governing needle valve 17 by fuel gas and controls.
In addition, the embodiment of the present invention also has advantages of, compact conformation, simple installation, skid-mounted structure is convenient to form standardization, and the product of seriation plurality of specifications model is selected for user, selects well main body 25 well heads to come gas import bore to have DN50, DN80, tri-kinds of specifications of DN100, select well number to have five wells, seven wells, nine well equal-specifications, there is stronger compliance; At present, a set of many wells of sledge dressization automatic well-selecting metering device, in the installation of Hui Gong gas gathering station of Shanxi Ji County, is transported to behind scene, only needs one, crane, one of welding machine, two of workmans, whole Installation and Debugging only need one day, have accelerated coal bed gas gas field construction speed.For the actual conditions in coal bed gas gas field, selecting well is seven mouthfuls of wells, wherein has four-hole well, by 2011 07 month 17, produces tolerance daily at 12Nm
3about/h, realize coal bed gas efficient, fast, low cost development.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (13)
1. the special-purpose many wells of skid-mounted of coal bed gas automatic well-selecting metering device, it is characterized in that, described automatic well-selecting metering device at least comprises: many wells select well metering system (I), fuel gas metering system (II), Intelligent control cabinet (III), base (IV) and interlock circuit, associated pipe; Described many wells select well metering system (I) and described fuel gas metering system (II) by total export pipeline (H) connection of described associated pipe, be integrated on described base (IV) with skid-mounted type with described Intelligent control cabinet (III), be placed near the well head block of coal bed gas gas field, connect many mouthfuls of individual wells and come gas pipeline and outer defeated production manifold, defeated in order to coal bed gas collection.
2. the special-purpose many wells of skid-mounted of coal bed gas according to claim 1 automatic well-selecting metering device, it is characterized in that, described associated pipe at least comprises: the blow-down pipe (L) of the first individual well admission line (A), the second individual well admission line (B), the 3rd individual well admission line (C), the 4th individual well admission line (D), the 5th individual well admission line (E), the 6th individual well admission line (F), the 7th individual well admission line (G), total export pipeline (H), metering pipeline (I), fuel gas metering pipeline (J), fuel gas metering bypass line (K), device.
3. the special-purpose many wells of skid-mounted of coal bed gas according to claim 1 automatic well-selecting metering device, it is characterized in that, described many wells select well metering system (I) at least to comprise: the first individual well admission line ball valve (1), the second individual well admission line ball valve (2), the 3rd individual well admission line ball valve (3), the 4th individual well admission line ball valve (4), the 5th individual well admission line ball valve (5), the 6th individual well admission line ball valve (6), the 7th individual well admission line ball valve (7), select well main body access hole (8), blow-down pipe stop valve (9), metering pipeline inlet ball valve (10), vortex precession flowmeter (11), rupture disk for superpressure preventing (12), metering pipeline vent ball valve (13), total export pipeline exit butterfly valve (14), total export pipeline outlet non-return valve (15), reserved purging or note alcohol mouth ball valve (16) and YE (24), select well main body (25).
4. the special-purpose many wells of skid-mounted of coal bed gas according to claim 3 automatic well-selecting metering device, it is characterized in that, described choosing is provided with several individual well air inlet ports and a total delivery outlet and a metering outlet in well main body (25), described the first individual well admission line (A), described the second individual well admission line (B), described the 3rd individual well admission line (C), described the 4th individual well admission line (D), described the 5th individual well admission line (E), one end of described the 6th individual well admission line (F) and described the 7th individual well admission line (G) selects the individual well air inlet port in well main body (25) to be connected with described respectively, the many mouthfuls of individual wells that the other end of described each admission line connects coal bed gas gas field well head block carry out gas pipeline, described the first individual well admission line (A), described the second individual well admission line (B), described the 3rd individual well admission line (C), described the 4th individual well admission line (D), described the 5th individual well admission line (E), on described the 6th individual well admission line (F) and described the 7th individual well admission line (G), be separately installed with described the first individual well admission line ball valve (1), described the second individual well admission line ball valve (2), described the 3rd individual well admission line ball valve (3), described the 4th individual well admission line ball valve (4), described the 5th individual well admission line ball valve (5), described the 6th individual well admission line ball valve (6), described the 7th individual well admission line ball valve (7), described well main body (25) one sides of selecting are provided with the described well main body access hole (8) that selects.
5. the special-purpose many wells of skid-mounted of coal bed gas according to claim 4 automatic well-selecting metering device, it is characterized in that, the described well main body (25) of selecting connects described YE (24), described YE (24) connects described Intelligent control cabinet (III) by interlock circuit, and described YE (24), described Intelligent control cabinet (III) are integrated into single control module; Described YE (24) is the described Power Drive Unit that selects well main body (25), receive described Intelligent control cabinet (III) control command, in conjunction with described vortex precession flowmeter (11), carry out on the spot and the select well operations of Long-distance Control to a plurality of well head automatic well-selectings, automatic gauge, automatic monitoring.
6. the special-purpose many wells of skid-mounted of coal bed gas according to claim 5 automatic well-selecting metering device, it is characterized in that, the described total delivery outlet connection of upper of arranging of well main body (25) the described total export pipeline (H) that selects, the described upper metering outlet connection described metering pipeline (I) arranging of well main body (25) that selects; Described total export pipeline (H), being communicated with the blow-down pipe (L) that is communicated with described device on described fuel gas metering pipeline (J) section before, is provided with described blow-down pipe stop valve (9) on the blow-down pipe of described device (L).
7. the special-purpose many wells of skid-mounted of coal bed gas according to claim 6 automatic well-selecting metering device, it is characterized in that, the tail end of described metering pipeline (I) is communicated with described total export pipeline (H), on described metering pipeline (I), be provided with in turn described metering pipeline inlet ball valve (10), described vortex precession flowmeter (11), described rupture disk (12) for superpressure preventing, described metering pipeline vent ball valve (13), on the last outlet section of described total export pipeline (H), be provided with in turn described total export pipeline exit butterfly valve (14), described total export pipeline outlet non-return valve (15), described reserved purging or note alcohol mouth ball valve (16).
8. the special-purpose many wells of skid-mounted of coal bed gas according to claim 1 automatic well-selecting metering device, it is characterized in that, described fuel gas metering system (II) at least comprises: fuel gas metering pipeline by-pass governing needle valve (17), fuel gas metering pipeline inlet ball valve (18), dehydrator filter (19), pressure-regulating valve (20), gas meter (21), fuel use gas metering pipeline vent ball valve (22), fuel use gas metering pipeline delivery gauge (23) and associated pipe fuel gas metering pipeline (J), fuel gas metering bypass line (K); In addition defeated fuel gas dehydration and metering operation for described fuel gas metering system (II).
9. the special-purpose many wells of skid-mounted of coal bed gas according to claim 8 automatic well-selecting metering device, it is characterized in that, described fuel gas metering pipeline (J) is communicated with described total export pipeline (H), is connected with in turn described fuel gas metering pipeline inlet ball valve (18), described dehydrator filter (19), described pressure-regulating valve (20), described gas meter (21), described fuel use gas metering pipeline vent ball valve (22), described fuel use gas metering pipeline delivery gauge (23) on described fuel gas metering pipeline (J).
10. the special-purpose many wells of skid-mounted of coal bed gas according to claim 9 automatic well-selecting metering device, it is characterized in that, on described fuel gas metering pipeline (J), be parallel with described fuel gas metering bypass line (K), one end of described fuel gas metering bypass line (K) is connected on the section between described fuel use gas metering pipeline vent ball valve (22) and described fuel use gas metering pipeline delivery gauge (23), the other end is communicated with described total export pipeline (H), and described fuel gas metering pipeline by-pass governing needle valve (17) is installed on described fuel gas metering bypass line (K).
The special-purpose many wells of skid-mounted of 11. coal bed gas according to claim 3 automatic well-selecting metering device, is characterized in that, described vortex precession flowmeter (11) is selected intelligent vortex precession flowmeter.
The special-purpose many wells of skid-mounted of 12. coal bed gas according to claim 3 automatic well-selecting metering device, is characterized in that, described YE (24) adopts planetary gear transmission mechanism, and the rotation of motor is done to 360 ° of rotations through transmission mechanism band movable valve plug.
The special-purpose many wells of skid-mounted of 13. coal bed gas according to claim 1 automatic well-selecting metering device, it is characterized in that, described many wells of skid-mounted automatic well-selecting metering device outer setting has heat insulating material, select steel framework to support stay-warm case and form whole cover type room type insulation construction, type top, described room is slope moulding.
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| CN201310127793.9A CN104100255B (en) | 2013-04-12 | 2013-04-12 | A kind of coal bed gas special skid-mounted many wells automatic well-selecting metering device |
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