阅读说明：本技术 普通铸铁管在非开挖施工中的运用方法及管道锁定装置 (Application method and pipeline locking device of the plain cast iron pipe in non-excavating construction ) 是由 张冬 江思安 于 2019-08-28 设计创作，主要内容包括：本发明提供普通球墨铸铁管在非开挖施工中的运用方法,包括：第一步：前期准备步骤,施工前了解施工地地层情况,设计确定管道路径；第二步：导向开孔步骤,采用钻孔机在施工地的地下钻出导向孔,导向孔的路径沿着预先确定的管道路径；第三步：扩孔钻进步骤,利用扩孔器的回拉对导向孔进行扩展；第四步：铺管检测步骤,在扩孔器回拉的过程中完成管道铺设,铺设完毕后进行气密性检测。采用普通的球墨铸铁管替代自锚接口的非开挖专用球墨铸铁管道,充分利用球墨铸铁管良好的性质和物理力学,科学的设计管道拉管轨迹曲线,在普通球墨铸铁管允许的最大弯曲偏转角的条件下,完成了普通球墨铸铁管在水平定向非开挖拉管中的创新运用。(The present invention provides application method of the common ductile iron pipe in non-excavating construction, comprising: step 1: early-stage preparations step, understands construction ground strata condition before constructing, design and determine pipeline path；Step 2: guiding opening step, drills out pilot hole in the underground of construction ground using drilling machine, the path of pilot hole is along predetermined pipeline path；Step 3: reamer progress is rapid, pilot hole is extended using pulling back for reamer；Step 4: pipe laying detecting step, completes pipeline during reamer is pulled back and is laid with, carry out air-leakage test after laying.Using the dedicated ductile iron pipeline of no-dig technique of common ductile iron pipe substitution self-anchoring joint, make full use of the good property of ductile iron pipe and physical mechanics, the design pipeline trombone slide geometric locus of science, under conditions of the maximum deflection deflection angle that common ductile iron pipe allows, innovative usage of the common ductile iron pipe in horizontal orientation non-digging tube-pulling is completed.)

1. application method of the common ductile iron pipe in non-excavating construction, comprising:

Step 1: early-stage preparations step, understands construction ground strata condition before constructing, designs and determine pipeline path；

Step 2: guiding opening step, drills out pilot hole in the underground of construction ground using drilling machine, the path of pilot hole is along pre- First determining pipeline path；

Step 3: reamer progress is rapid, after the drilling rod of machine hole to be drilled completes the aperture of pilot hole, pulling back to leading for reamer is utilized Multi-tier is carried out to hole, forms the pipeline path that aperture is greater than pilot hole；

Step 4: mounted common ductile iron pipe is formed by connecting by pipe laying detecting step in time after borehole cleaning is met the requirements Pipeline be connected on reamer, during reamer is pulled back complete pipeline be laid with, after laying carry out air-tightness inspection It surveys.

2. application method of the common ductile iron pipe according to claim 1 in non-excavating construction, which is characterized in that institute Guiding opening step is stated to be divided into:

(S2.1) according to the starting point of selected guide track and terminal in the position of surface relief status figure, excavate into hole hole and Portal hole；

(S2.2) since the drilling rod of drilling machine carry out drilling until stretching out from hole of portalling along guide track, shape entering hole hole At pilot hole.

3. application method of the common ductile iron pipe according to claim 2 in non-excavating construction, which is characterized in that institute Reamer progress is stated to be divided into suddenly:

(S3.1) after drilling rod is stretched out from hole of portalling, reamer is connected on drilling rod；

(S3.2) after to reamer connection, drilling rod of pulling back, during pulling back, reamer carries out multistage reaming to pilot hole Drilling.

4. application method of the common ductile iron pipe according to claim 3 in non-excavating construction, which is characterized in that institute Pipe laying detecting step is stated to be divided into:

(S4.1) common ductile iron pipe is installed on the coast, forms " "-" type " complete pipeline；

(S4.2) the pipe laying locking device on pipeline, i.e., on pipeline assembled inside drilling rod, one connecting pipe head of drilling rod Pipe cap, other end is connected on the outer tooth screw bar on the bored plate of pipeline tail portion；

(S4.3) pipe cap of pipeline head is connected on reamer, pipeline laying is carried out while reaming drilling well；

(S4.4) after being laid with to pipeline, pipe cap and drilling rod are removed；

(S4.5) after being removed to the fifth wheel on pipeline, air-leakage test is carried out to pipeline, sets work for measuring air pressure 1.5 times for making pressure, pipeline kept under this atmospheric pressure state 30 minutes for qualification.

5. application method of the common ductile iron pipe according to claim 1 in non-excavating construction, it is characterised in that: In There are also bath cleaning pipeline and steps of withdrawing after pipe laying detecting step, to pipeline inside carry out bath cleaning after withdraw.

6. application method of the common ductile iron pipe according to claim 1 in non-excavating construction, which is characterized in that institute Early-stage preparations step is stated to be divided into:

(S1.1) ground and the subsurface picture for understanding working site, draw surface relief status figure；

(S1.2) standard trajectory curve library is drawn in the deflection angle allowed according to different tube diameters when curve is installed, design；

(S1.3) the surface relief status figure drawn is carried out to overlapping to compare with the standard trajectory curve library drawn, selection is full The best guide track of foot construction demand.

7. application method of the common ductile iron pipe according to claim 2 in non-excavating construction, which is characterized in that most The selection method of good guide track includes:

Selected one is passed through the depth of barrier；

It will be travelling through geometric locus according to sequence of excavation and be divided into penetrating curved section L1, easement curve section L2, being pierced by curved section L3；

The pipe range of common ductile iron pipe is set as flat span, the common ductile iron pipe of every section of flat span is fixed with one Angle changing component unit curved unit；

Multistage unit curved unit composition penetrates curved section, is pierced by curved section, forms one with smooth easement curve section and passes through Geometric locus simultaneously stores record；

The fixation angle changing of flat span, which is gradually increased up common ductile iron pipe with a steady state value, allows maximum deflection Angle, formed it is new pass through geometric locus and store record, to establish a standard trajectory curve library；

The geometric locus that passes through of the surface relief status figure of drafting and standard trajectory curve library is carried out overlapping and compared, is obtained best Guide track.

8. application method of the common ductile iron pipe according to claim 7 in non-excavating construction, which is characterized in that In When establishing a standard trajectory curve library, for every kind pass through barrier construct a standard trajectory curve, and intelligently determine described in Curve penetrates curved section L1, easement curve section L2, is pierced by curved section L3, and the specific steps of the building standard trajectory curve are such as Shown in lower:

Step A1, the starting position of curved section L1 will be penetrated as a coordinate origin, to need to pass through water locating for barrier It is long as the unit of coordinate system using a flat span using vertically downward direction as Y direction square to as X-direction Degree, constructs a coordinate system；

Step A2, the coordinate points a1 of barrier most nearby from origin is passed through needed for acquisition, it is described to pass through barrier most from origin The coordinate points a3 of distant place obtains the centre point using the midpoint of coordinate points a1 and coordinate points a3 as an obstacle centre point ao Value ao=(X of the ao on coordinate system_ao,Y_ao), need to pass through farthest from obstacle centre point ao on barrier one for described Point is labeled as barrier zone point a4, obtains value a4=(X of the barrier zone point a4 on coordinate system_a4,Y_a4), and by institute It states centre point ao and barrier zone point a4 and constructs a barrier function (1)；

Wherein, the distance of obstacle that r is, f (x) are the barrier function of building, and x be the independent variable of the barrier function constructed, and x Value interval be [X_ao-r,X_ao+ r], the result that f (x) is obtained is that the barrier function when independent variable x takes different value can obtain Obstacle depth；

Step A3, curved section L3 is pierced by described in acquisition terminates the coordinate points b1 at place, obtains the coordinate points b1 on coordinate system Value b1=(X_b1,Y_b1), and described value is brought into formula (2), function is passed through in building；

Wherein, g (x) is the function that passes through of building, and the value interval of x is [0, X_b1], and when x takes all values, corresponding g (x) The parabola of formation is then best guide track；

Step A4, the best guide track is brought into formula (3), so that it is determined that penetrating curved section L1, easement curve section L2, wearing Curved section L3 out；

Wherein, g ' (x) is, to function g (x) derivation is passed through, xL is that final determination penetrates curved section L1, easement curve section L2, is pierced by Corresponding xL is calculated labeled as xL1, when g ' (x) value when g ' (x) value is -0.1 in cut-point when curved section L3 When being 0.1, corresponding label, which is calculated, is；

Step A5, when the value interval of x is [0, xL1], the parabola that g (x) is formed then is to penetrate curved section L1, when taking for x When value section is (xL1, xL2), the parabola that g (x) is formed then is easement curve section L2, when the value interval of x is [xL2, X_b1] When, the parabola that g (x) is formed then is to be pierced by curved section L3.

9. a kind of pipeline locking device, applied to the pipeline in claim 1, the pipeline is " "-" type " integral conduit, or Applied in " "-" type " integral conduit in claim 4 characterized by comprising

Pipe cap (1), for conical hollow structure, the lesser one end of diameter is provided with the connector (2) for connecting reamer, One end that the pipe cap (1) is relatively large in diameter is connect with the port sealing of pipeline (3)；

Bored plate (4) are sealed, are disc-shaped structure, are sealedly connected on the port of pipeline (3) other end, the bored plate (4) of sealing On also extend through and be connected with outer tooth screw bar (5), be threaded with a cap (6) on the outer tooth screw bar (5), the silk cap (6) it is close to the side contacted on the bored plate (4) of sealing with external environment；

It locks drilling rod (7), is placed in pipeline (3) inside, one end is fixedly connected with the pipe cap (1), and the other end is fixedly connected on institute It states on outer tooth screw bar (5).

10. a kind of pipeline locking device according to claim 9, it is characterised in that: the pipeline locking device further includes Alarm system, the alarm system include setting in locking drilling rod (7) and pipe cap (1) junction and locking drilling rod (7) and outer tooth The tearing sensor of screw rod (5) junction, the strain gauge being attached on locking drilling rod (7), the tearing sensing Device, strain gauge are connected electrically in the input terminal in the same control circuit, and the output end of the control circuit is also electrical respectively It is connected with the first alarm, the second alarm, the control circuit includes:

Sensor is torn, pin 1 is connected with voltage input end, and pin 3 is grounded, and is also connected with capacitor between pin 1,3 C1, pin 2 have been sequentially connected in series resistance R1, inductance M1；

Strain gauge, pin 1 are connected with voltage input end, and pin 3 is grounded, and is also connected with capacitor between pin 1,3 C2, pin 2 have been sequentially connected in series resistance R2, inductance M2；

Capacitor C3, the upper end are connected with the right end of inductance M1, and lower end is connected with the right end of capacitor M2；

Multiplier (-icator) T1, normal phase input end are connected with R4, and the other end of R4 is separately connected R6, R7, and negative-phase input connects respectively It is connected to lower end, the resistance R3, capacitor C4 of capacitor C3, output end is connected with the one end R5；

Capacitor C4, the upper end are connected with the negative-phase input of the multiplier (-icator) T1, lower end ground connection；

Resistance R5, the other end have been sequentially connected in series resistance R6, resistance R7, the other end ground connection of resistance R7；

Zener diode P1, anode are connected with the right end of R5, and cathode is connected with the cathode of zener diode P2, two pole of pressure stabilizing The plus earth of pipe P2；

Frequency transmitter W1, pin 1 are connected separately with the anode of resistance R8, diode D2, the cathode ground connection of diode D2, electricity The other end for hindering R8 connects power supply；Its pin 2 is connected with the anode of zener diode P1；Its pin 3,4 ground connection；Its pin 5,9 Connect power input；Its pin 8 is separately connected the cathode of diode D3, the one end capacitor C5, the plus earth of diode D3, capacitor The other end of C5 is connected with pin 7, pin 6；Pin 6 is also connect with resistance R9, capacitor C6 in parallel, pin 6, resistance R9, electricity Hold C6 ground connection；

Multiplier (-icator) T2, multiplier (-icator) T3, the voltage signal that the pin 7 of the negative-phase input rate of connections transmitter W1 of the two exports, The comparison circuit for resistance R10, R11, R12 composition that the voltage signal is connect with the normal phase input end of multiplier (-icator) T2, multiplier (-icator) T3 Voltage-contrast is carried out, the output end of multiplier (-icator) T2 is connected with the first alarm L1, the output end of multiplier (-icator) T3 and the second alarm L2 is connected.

Technical field

The present invention relates to the construction methods in pipelaying techniques field, and in particular to common ductile iron pipe is applied in no-dig technique Application method and pipeline locking device in work.

Background technique

Horizontal orientation no-dig laying pipelines technique is also known as extensive use of the HDD technology in water supply and sewerage pipeline project construction, more Show important.The advantages of this construction technology, is: not influencing normally on road, railway, river and other buildings etc. is passed through It uses；Seldom to ground demolition, be conducive to environmental protection；Short construction period, operation safety are rapid, overall cost is low, society's effect It is beneficial significant.

The dedicated ductile iron pipeline of the no-dig technique of self-anchoring joint reaches good utilization in crossing project.Spheroidal graphite cast-iron tool There are higher tensile strength and bending fatigue limit, it may have quite good plasticity and toughness, spheroidal graphite cast-iron tubing use T-type Cushion rubber (is made of) ebonite and flexible glue two parts, and flexible interface axial stretching amount meets interface and drift angle (θ) occurs because of external force, The steering that pipeline long range is realized using its deflection angle, just has the smallest radius of curvature, to realize horizontal orientation no-dig technique It moves towards to require in pipe-laying process pipeline track " curve+easement curve+curve ".Ductile cast iron material has the power close with carbon steel Performance is learned, while there is the distinctive corrosion resistance of cast iron, ductile iron pipe external layer preservation uses zinc+highly-chlorinated polyethylene finish Layer, spray zinc have itself repairing performance, internal layer cement mortar liner well, become the successful case for solving tubing internal and external anti-corrosive. Level determines the dedicated ductile iron pipe material of no-dig technique, and self-anchoring joint includes bellmouth, socket, baffle ring, and the end of bellmouth is radially-inwardly prolonged It stretches to form a complete annular wall, the end setting socket of socket is raised (weld-ring), and the interface is by the baffle ring of bellmouth by axis Realize that the baffle ring that supporter uses is tight contacted between with receptacle wall and weld-ring always, guarantees that interface possesses reliably from anchor to power From anchor performance.Cast iron tube of self-anchoring solves the practical problem of no-dig technique Pipeline Crossing Program in trenchless engineering construction, increases Add construction reliability, the permission deflection angle of pipeline internal and external anti-corrosive perfection scheme, especially interface solves non-digging tube-pulling track institute The radius of curvature needed.

However this cast iron tube of self-anchoring is 3 times of prices of common spheroidal graphite cast-iron tubing, and in construction and installation When, it is high to the technical requirements of self-anchoring joint, it is cumbersome.Therefore horizontal orientation non-excavating construction cost how is reduced, becomes pendulum The unusual stubborn problem in face of people.

Summary of the invention

Application method and the pipeline locking that the purpose of the present invention is to provide common ductile iron pipes in non-excavating construction Device is high, cumbersome to solve the problems, such as cast iron tube of self-anchoring construction selling at exorbitant prices, technical requirements.

To achieve the above object, the invention provides the following technical scheme: common ductile iron pipe is in non-excavating construction Application method, comprising:

Step 1: early-stage preparations step, understands construction ground strata condition before constructing, designs and determine pipeline path；

Step 2: guiding opening step, drills out pilot hole, the path edge of pilot hole in the underground of construction ground using drilling machine Predetermined pipeline path；

Step 3: reamer progress is rapid, after the drilling rod of machine hole to be drilled completes the aperture of pilot hole, pulling back for reamer is utilized Multi-tier is carried out to pilot hole, forms the pipeline path that aperture is greater than pilot hole；

Step 4: pipe laying detecting step in time connects mounted common ductile iron pipe after borehole cleaning is met the requirements Made of pipeline be connected on reamer, during reamer is pulled back complete pipeline be laid with, carried out after laying airtight Property detection.

As an improvement of the present invention, the guiding opening step is divided into:

(S2.1) it is excavated in the position of surface relief status figure into hole according to the starting point of selected guide track and terminal It cheats and hole of portalling；

(S2.2) since the drilling rod of drilling machine carry out drilling along guide track until being from hole stretching of portalling entering hole hole Only, pilot hole is formed.

As an improvement of the present invention, the reamer progress is divided into suddenly:

(S3.1) after drilling rod is stretched out from hole of portalling, reamer is connected on drilling rod；

(S3.2) after to reamer connection, drilling rod of pulling back, during pulling back, reamer carries out pilot hole multistage Reaming drilling.

As an improvement of the present invention, the pipe laying detecting step is divided into:

(S4.1) common ductile iron pipe is carried out to " "-" type " installation on the coast, forms complete pipeline；

(S4.2) the pipe laying locking device on pipeline, i.e., in pipeline assembled inside drilling rod, one connecting pipe of drilling rod The pipe cap on head, other end are connected on the outer tooth screw bar on the bored plate of pipeline tail portion；

(S4.3) pipe cap of pipeline head is connected on reamer, pipeline laying is carried out while reaming is pulled back；

(S4.4) after being laid with to pipeline, pipe cap and drilling rod are removed；

(S4.5) after being removed to the fifth wheel on pipeline, air-leakage test is carried out to pipeline, measuring air pressure is arranged Be 1.5 times of operating pressure, pipeline kept under this atmospheric pressure state 30 minutes for qualification.

As an improvement of the present invention, there are also baths to clear up pipeline and step of withdrawing after pipe laying detecting step, to It withdraws after carrying out bath cleaning inside pipeline.

As an improvement of the present invention, the early-stage preparations step is divided into:

(S1.1) ground and the subsurface picture for understanding working site, draw surface relief status figure；

(S1.2) standard trajectory curve library is drawn in the deflection angle allowed according to different tube diameters when curve is installed, design；

(S1.3) the surface relief status figure drawn is carried out to overlapping to compare with the standard trajectory curve library drawn, is obtained Obtain best guide track.

As an improvement of the present invention, the selection method of best guide track includes:

Selected one is passed through the depth of barrier；

It will be travelling through geometric locus according to sequence of excavation and be divided into penetrating curved section L1, easement curve section L2, being pierced by curve Section L3；

The pipe range of common ductile iron pipe is set as flat span, by the common ductile iron pipe of every section of flat span with one Fixed angle changing component unit curved unit；

Multistage unit curved unit composition penetrates curved section, is pierced by curved section, forms one with smooth easement curve section It passes through geometric locus and stores record；

The fixation angle changing of flat span, which is gradually increased up common ductile iron pipe with a steady state value, allows maximum Deflection angle, formed it is new pass through geometric locus and store record, to establish a standard trajectory curve library；

The geometric locus that passes through of the surface relief status figure of drafting and standard trajectory curve library is carried out overlapping and compared, is obtained Best guide track.

As an improvement of the present invention, when establishing a standard trajectory curve library, barrier building is passed through for every kind One standard trajectory curve, and intelligently determine penetrating curved section L1, easement curve section L2, being pierced by curved section L3 for the curve, The building standard trajectory curve is shown in specific step is as follows:

Step A1, the starting position of curved section L1 will be penetrated as a coordinate origin, to need to pass through locating for barrier Horizontal direction as X-direction, using vertically downward direction as Y direction, using a flat span as the list of coordinate system Bit length constructs a coordinate system；

Step A2, the coordinate points a1 of barrier most nearby from origin is passed through needed for acquisition, the barrier that need to pass through is from original The coordinate points a3 of point farthest obtains the circle using the midpoint of coordinate points a1 and coordinate points a3 as an obstacle centre point ao Value ao=(X of the heart point ao on coordinate system_ao,Y_ao), by it is described need to pass through it is farthest from obstacle centre point ao on barrier One point is labeled as barrier zone point a4, obtains value a4=(X of the barrier zone point a4 on coordinate system_a4,Y_a4), and The centre point ao and barrier zone point a4 is constructed into a barrier function (1)；

Wherein, the distance of obstacle that r is, f (x) are the barrier function of building, and x is becoming certainly for the barrier function of building Amount, and the value interval of x is [X_ao-r,X_ao+ r], the result that f (x) is obtained is the barrier function when independent variable x takes different value The depth of getable obstacle；

Step A3, curved section L3 is pierced by described in acquisition terminates the coordinate points b1 at place, obtains the coordinate points b1 in coordinate system Value b1=(X above_b1,Y_b1), and described value is brought into formula (2), function is passed through in building；

Wherein, g (x) is the function that passes through of building, and the value interval of x is [0, X_b1], and when x takes all values, corresponding g (x) parabola formed is then best guide track；

Step A4, the best guide track is brought into formula (3), so that it is determined that penetrating curved section L1, easement curve section L2, it is pierced by curved section L3；

Wherein, g ' (x) be to passing through function g (x) derivation, xL be it is final determine penetrate curved section L1, easement curve section L2, It is pierced by cut-point when curved section L3, when g ' (x) value is -0.1, corresponding xL is calculated labeled as xL1, as g ' (x) When value is 0.1, corresponding label, which is calculated, is；

Step A5, when the value interval of x is [0, xL1], the parabola that g (x) is formed then is to penetrate curved section L1, works as x Value interval be (xL1, xL2) when, g (x) formed parabola be then easement curve section L2, when x value interval be [xL2, X_b1] when, the parabola that g (x) is formed then is to be pierced by curved section L3.

As an improvement of the present invention, a kind of pipeline locking device is applied in " "-" type " integral conduit, comprising:

Pipe cap, for conical hollow structure, the lesser one end of diameter is provided with the connector for connecting reamer, institute State the port sealing connection of one end and pipeline that pipe cap is relatively large in diameter；

Bored plate is sealed, is disc-shaped structure, the port of the pipeline other end is sealedly connected on, is also passed through on the bored plate of sealing It wears and is connected with outer tooth screw bar, a cap is threaded on the outer tooth screw bar, it is bored that the silk cap is close to the sealing The side contacted on plate with external environment；

Drilling rod is locked, is placed in inside pipeline, one end is fixedly connected with the pipe cap, and the other end is fixedly connected on the outer tooth In screw rod.

As an improvement of the present invention, the pipeline locking device further includes alarm system, and the alarm system includes Be arranged in locking drilling rod and pipe cap junction and locking drilling rod and the tearing sensor of outer tooth screw bar junction, be attached to it is described The strain gauge on drilling rod is locked, the tearing sensor, strain gauge are connected electrically in defeated in the same control circuit Enter end, the first alarm, the second alarm, the control circuit packet has also been electrically connected in the output end of the control circuit It includes:

Sensor is torn, pin 1 is connected with voltage input end, and pin 3 is grounded, and is also connected between pin 1,3 Capacitor C1, pin 2 have been sequentially connected in series resistance R1, inductance M1；

Strain gauge, pin 1 are connected with voltage input end, and pin 3 is grounded, and is also connected between pin 1,3 Capacitor C2, pin 2 have been sequentially connected in series resistance R2, inductance M2；

Capacitor C3, the upper end are connected with the right end of inductance M1, and lower end is connected with the right end of capacitor M2；

Multiplier (-icator) T1, normal phase input end are connected with R4, and the other end of R4 is separately connected R6, R7, negative-phase input point It is not connected with lower end, the resistance R3, capacitor C4 of capacitor C3, output end is connected with the one end R5；

Capacitor C4, the upper end are connected with the negative-phase input of the multiplier (-icator) T1, lower end ground connection；

Resistance R5, the other end have been sequentially connected in series resistance R6, resistance R7, the other end ground connection of resistance R7；

Zener diode P1, anode are connected with the right end of R5, and cathode is connected with the cathode of zener diode P2, pressure stabilizing The plus earth of diode P2；

Frequency transmitter W1, pin 1 are connected separately with the anode of resistance R8, diode D2, and the cathode of diode D2 connects The other end on ground, resistance R8 connects power supply；Its pin 2 is connected with the anode of zener diode P1；Its pin 3,4 ground connection；It draws Foot 5,9 connects power input；Its pin 8 is separately connected the cathode of diode D3, the one end capacitor C5, and the anode of diode D3 connects The other end on ground, capacitor C5 is connected with pin 7, pin 6；Pin 6 is also connect with resistance R9, capacitor C6 in parallel, pin 6, electricity Hinder R9, capacitor C6 ground connection；

Multiplier (-icator) T2, multiplier (-icator) T3, the voltage letter that the pin 7 of the negative-phase input rate of connections transmitter W1 of the two exports Number, the voltage signal is electric compared with resistance R10, R11, R12 composition that the normal phase input end of multiplier (-icator) T2, multiplier (-icator) T3 connect Road carries out voltage-contrast, and the output end of multiplier (-icator) T2 is connected with the first alarm L1, the output end of multiplier (-icator) T3 and the second alarm Device L2 is connected.

Other features and advantages of the present invention will be illustrated in the following description, also, partly becomes from specification It obtains it is clear that understand through the implementation of the invention.The objectives and other advantages of the invention can be by written explanation Specifically noted structure is achieved and obtained in book, claims and attached drawing.

Below by drawings and examples, technical scheme of the present invention will be described in further detail.

Detailed description of the invention

Fig. 1 is the schematic diagram of drilling-curve track of the present invention；

Fig. 2 is the structural schematic diagram of pipeline locking device of the invention；

Fig. 3 is the electric operation control circuit figure of alarm system of the present invention.

Each component in figure are as follows:

1- pipe cap, 2- connector, 3- pipeline, 4- seal bored plate, the outer tooth screw bar of 5-, 6- caps, 7- locking drilling rod.

Specific embodiment

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, it should be understood that preferred reality described herein Apply example only for the purpose of illustrating and explaining the present invention and is not intended to limit the present invention.

Referring to Fig. 1, common application method of the ductile iron pipe in non-excavating construction, comprising:

Step 1: early-stage preparations step, understands construction ground strata condition before constructing, designs and determine pipeline path；

Step 2: guiding opening step, drills out pilot hole, the path edge of pilot hole in the underground of construction ground using drilling machine Predetermined pipeline path；

Step 3: reamer progress is rapid, after the drilling rod of machine hole to be drilled completes the aperture of pilot hole, pulling back for reamer is utilized Multi-tier is carried out to pilot hole, forms the pipeline path that aperture is greater than pilot hole；

Step 4: pipe laying detecting step, is connected to reaming for the pipeline that mounted common ductile iron pipe is formed by connecting On device, pipeline is completed during reamer is pulled back and is laid with, carries out air-leakage test after laying.

The working principle of above-mentioned technical proposal: it since underground tunneling belongs to the biggish subdivisional work of risk, is applying Need to carry out prior understanding to condition of construction before work, select the pipeline path of proper security, it is to be selected set pipeline path after, carry out Directional drilling trombone slide.It is (close according to selected pipeline path i.e. using construction equipments such as directional drilling machine, starter and guide instruments Like arc), pilot hole of first being constructed using Technology of Directional Drilling, subject-oriented drill is revealed in the other side for being crossed barrier After out, the reaming bit that starter changes major diameter is unloaded, diameter is less than being connected by common ductile iron pipe for reaming bit Made of pipeline, pull in drilling.Or it is returned again after according to the performance of drilling machine and the diameter of pipeline can first carrying out multiple reaming Trombone slide line, when whole drilling rods being waited to be pulled, the work of pipe laying is also completed at the same time.

Above-mentioned technical proposal the utility model has the advantages that using common ductile iron pipe substitution self-anchoring joint no-dig technique Special ball Graphite cast iron pipe road makes full use of the good property of ductile iron pipe and physical mechanics, axial using non-digging tube-pulling tubing is changed Impact direction, the mode of anti-avulsion cushion rubber fixed -piping interface, scientific design pipeline trombone slide geometric locus, in common spheroidal graphite cast-iron Under conditions of the maximum deflection deflection angle that pipe allows, wound of the common ductile iron pipe in horizontal orientation non-digging tube-pulling is completed It is new to use.

In one embodiment of the invention, the guiding opening step is divided into:

(S2.1) it is excavated in the position of surface relief status figure into hole according to the starting point of selected guide track and terminal It cheats and hole of portalling；

(S2.2) since the drilling rod of drilling machine carry out drilling along guide track until being from hole stretching of portalling entering hole hole Only, pilot hole is formed.

After selected pipeline path, by the place of piercing of drilling rod and drills out at the construction field (site) and be in construction site and mark, and Drilling rod specification is selected according to the curvature of pipeline path, the specification of drilling rod is selected referring to following table:

Table 1: drilling rod technological parameter

The drilling of pilot hole must be carried out according to the drilling trajectory parameters of design measurement.Using measurement-while-drilling system, boring Measuring probe is installed in tool, by the location parameter of probe measurement drill bit, and transfers data to earth's surface receiving instrument, operator Member takes the mechanism of technical measures control drilling direction appropriate according to data, so that drilling is in the footprint of design measurement It is crept into.

In one embodiment of the invention, the reamer progress is divided into suddenly:

(S3.1) after drilling rod is stretched out from hole of portalling, reamer is connected on drilling rod；

(S3.2) after to reamer connection, drilling rod of pulling back, during pulling back, reamer carries out reaming to pilot hole Drilling.

Reaming mainly by the reaming workload on the borehole enlargement of pilot hole to institute's pipeline installation, reducing pipe of pulling back and is returned The resistance of trombone slide.Specific operation process is that reamer is connected on drilling rod, pulls back and is expanded after drilling rod is drilled out from hole of portalling Hole, the pipeline being relatively large in diameter need to carry out multiple reaming drilling, and when reaming wants strict implement reaming to creep into technical regulation, to brill It is controlled into three turning power in the process, revolving speed, flushing fluid technological parameters.

In one embodiment of the invention, the pipe laying detecting step is divided into:

(S4.1) common ductile iron pipe is carried out to " "-" type " installation on the coast, forms complete pipeline；

(S4.2) the pipe laying locking device on pipeline, i.e., in pipeline assembled inside drilling rod, one connecting pipe of drilling rod The pipe cap on head, other end are connected on the outer tooth screw bar on the bored plate of pipeline tail portion；

(S4.3) pipe cap of pipeline head is connected on reamer, pipeline laying is carried out while reaming drilling well；

(S4.4) after being laid with to pipeline, pipe cap and drilling rod are removed；

(S4.5) after being removed to the fifth wheel on pipeline, air-leakage test is carried out to pipeline, measuring air pressure is arranged Be 1.5 times of operating pressure, pipeline kept under this atmospheric pressure state 30 minutes for qualification.

It is existing using self-anchoring joint formula ductile iron pipe in the step of pulling back pipe laying, using self-anchoring joint it is flexible from Anchor speciality realizes the laying of curvilinear path, connects ductile iron pipe section by section when pulling back pipe laying, that is, a section spheroidal graphite cast-iron of having pulled back Next section ductile iron pipe is connected by self-anchoring joint after pipe and continues pipe laying of pulling back, and the outsourcing of metal skin or poly- second are used to interface The materials such as alkene hot melt carry out outer protection, due to the special shape of self-anchoring joint formula ductile iron pipe nozzle after the completion of pipe laying, need It is connected at nozzle with dedicated traction pipe cap, therefore its dismounting is also extremely difficult.

And in an embodiment of the present invention, curvilinear path is realized by the bending physical characteristic of common ductile iron pipe itself Laying.When being laid with pipeline, the common ductile iron pipe of more piece is first sequentially connected with into " "-" type " pipeline on the coast, then will pipe Road is connected on reamer by dedicated pipe cap, and dedicated pipe cap is connected on the nozzle of pipeline by flange-interface.Due to Pipeline is to be laid with by the physical bend characteristic of itself, therefore need that drilling rod locking is arranged in pipeline in process of deployment The relative position of " "-" type " pipeline.Pipeline pipeline axial stress (self weight of pipeline+hole wall frictional force) during drawing in changes For drilling rod stress, opposite direction active force is jacking force to pipeline, and the jacking force of pipeline is significantly larger than shear stress.Pipeline trombone slide is in place Afterwards, it dismantles dedicated pipe cap to be very easy to, because what it connect with pipeline is ring flange interface, removes screw and be achieved that, pipeline Interior jointed rod has bench to cooperate easy completion disassembly.Pipeline complete barrier pass through hole it is in place after, it is entire to manage Road will also carry out secondary air tight test and suppress, and pressure is set as 1.5 times of operating pressure, after constant pressure 30min is qualified, complete pipe After the irrigation and disinfection process in road, so that it may be delivered for use.

Using non-digging tube-pulling tubing axially loaded mode is changed, due to the own wt and hole wall surrounding of pipeline when trombone slide Opposition required for the frictional force of soil becomes the jacking force to pipeline, with self-anchored type interface pipe in non-digging tube-pulling Active force is that the shear stress of pipeline axial direction is compared, and the jacking force performance of ductile iron pipe is stronger, safer.Different bore spheroidal graphite castings The permission jacking force of iron pipe is as shown in table 2.

Table 2: the permission pushing tow force parameter of different bore ductile iron pipes

Above-mentioned technical proposal the utility model has the advantages that solve the problems, such as that no-dig technique selection is difficult, mounting technique is complicated, effectively reduce Engineering material cost improves conduit running and stablizes.It is worth plumbing industry to be widely popularized in production, especially in Pipeline Crossing Program It is used in engineering, the risk of the latent leakage of pipeline can be effectively reduced, have very important effect to the control of production and marketing difference.This case is intended to protect Pipe cap and the fixed screw portion of pipe tail, the track designed in standard deviation corner are bent before the pipe that point designs for non-digging tube-pulling Knot closes site inspection and is oriented to accurate observing and controlling etc. to crossing project.

In one embodiment of the invention, there are also baths to clear up pipeline and step of withdrawing after pipe laying detecting step, It withdraws after carrying out bath cleaning inside to pipeline.

After pipeline is laid with, flow is no less than the flow velocity of 1.5m/s when to pipe flushing, carries out continuous flushing.

In one embodiment of the invention, the early-stage preparations step is divided into:

(S1.1) ground and the subsurface picture for understanding working site, draw surface relief status figure；

(S1.2) standard trajectory curve library is drawn in the deflection angle allowed according to different tube diameters when curve is installed, design；

(S1.3) the surface relief status figure drawn is carried out to overlapping to compare with the standard trajectory curve library drawn, is selected Select the best guide track for meeting construction demand.

When carrying out pipe laying using common ductile iron pipe, since it is using the deflection angle of spheroidal graphite cast-iron interface tube come real The curvilinear style path of existing pipeline.Therefore spheroidal graphite cast-iron interface tube allows deflection angle (θ) to be important examine in Trenchless Technologies The deflection angle (θ) of amount factor, the trajectory tortuosity radius requirement pipe joint of all Pipeline Crossing Program barrier designs is necessarily less than most It is big to allow corner.When pipeline is installed along curve, the maximum allowable corner of pipe joint and installation allow corner that should meet design Regulation, can refer to the pipe diameter size that table 3 selects common ductile iron pipe.

Table 3: the permission corner parameter of the common ductile iron pipe of different tube diameters

Table 4: the minimum profile curvature radius of different tube diameters ductile iron pipeline

DN	DE/mm	L/m	θ/°	Rpipe/m	Remarks
						80	98	5.9	4	84.52
100	118	5.9	4	84.52
						150	170	5.9	4	84.52
200	222	5.9	4	84.52
						250	274	5.9	4	84.52
300	326	5.9	3	112.65
						350	378	5.9	3	112.65
400	429	5.9	3	169.05

Therefore when designing pipeline geometric locus, according to the deflection angle that different tube diameters allow when curve is installed, design is drawn The standard trajectory curve of several different angle changings is produced to form a standard trajectory curve.Again to the environment of construction site Description is measured, surface relief status figure is drawn, finally by the surface relief status figure drawn and the standard gauge drawn Trace curve library carries out overlapping comparison, and selection meets the best guide track of construction demand.

In one embodiment of the invention, the selection method of best guide track includes:

Selected one is passed through the depth of barrier；

It will be travelling through geometric locus and be divided into penetrating curved section L1, easement curve section L2, being pierced by curved section L3；

The pipe range of common ductile iron pipe is set as flat span, by the common ductile iron pipe of every section of flat span with one Fixed angle changing component unit curved unit；

Multistage unit curved unit composition penetrates curved section, is pierced by curved section, forms one with smooth easement curve section It passes through geometric locus and stores record；

The fixation angle changing of the flat span of the common ductile iron pipe of different tube diameters is gradually increased directly with a steady state value To common ductile iron pipe allow maximum deflection angle, formed it is new pass through geometric locus and store record, to establish a standard Geometric locus library；

The geometric locus that passes through of the surface relief status figure of drafting and standard trajectory curve library is carried out overlapping and compared, is obtained Barrier can be encompassed wherein and most funiclar curve length is best guide track.

In practice of construction, in selected depth, required sometimes for the existing pipeline or thickness of earth-fill cover for avoiding underground When, often to consider depth when other pass through, specifically can refer to table 5.

Table 5: pipe installation minimum thickness of earth-fill cover in disparity items

When establishing standard trajectory curve library, it is first determined with the length of common ductile iron pipe for a flat span, The length of general common ductile iron pipe is 6 meters, and nominal diameter is the maximum allowable deflection of the common ductile iron pipe of 80mm Angle is 4 °.Fixed angle changing is set first as 1 °, and so-called " fixed angle changing " refers to common ductile iron pipe in curved The axis angle of both ends port when curved state.Being joined end to end by the common ductile iron pipe of multiple bending states, it is symmetrical to be formed It penetrates curved section and is pierced by curved section, constitute one with the easement curve section among two curved sections and completely pass through track Curve simultaneously stores record.

Then the common ductile iron pipe of different-diameter again with fix angle changing increase every time 0.1 ° (1.1 °, 1.2 °, 1.3 ° ...) mode constitute and several completely pass through geometric locus and store record to establishing a standard trajectory curve library. The geometric locus that passes through of the surface relief status figure of drafting and standard trajectory curve library is carried out overlapping and compared, best guiding is obtained Track." best guide track " mentioned here is that the barrier for referring to need to pass through encompasses wherein, and comprehensively considers Path length, pipe diameter demand, the requirement of pipe bending degree etc..

Above-mentioned technical proposal the utility model has the advantages that according to the physical bend performance of the common ductile iron pipe of different tube diameters, curved Bent angle no more than its allow deflection angle in the range of establish standard trajectory curve library, convenient for selection barrier drilling-curve and When the tubing of common ductile iron pipe, surface relief status figure is directly compared with standard trajectory curve library, it can be more Intuitively select the tubing of barrier drilling-curve the most suitable and common ductile iron pipe.

In one embodiment of the invention, when establishing a standard trajectory curve library, barrier structure is passed through for every kind A standard trajectory curve is built, and intelligently determines penetrating curved section L1, easement curve section L2, being pierced by curved section for the curve L3, the building standard trajectory curve is shown in specific step is as follows:

Step A1, the starting position of curved section L1 will be penetrated as a coordinate origin, to need to pass through locating for barrier Horizontal direction as X-direction, using vertically downward direction as Y direction, using a flat span as the list of coordinate system Bit length constructs a coordinate system；

Step A2, the coordinate points a1 of barrier most nearby from origin is passed through needed for acquisition, the barrier that need to pass through is from original The coordinate points a3 of point farthest obtains the circle using the midpoint of coordinate points a1 and coordinate points a3 as an obstacle centre point ao Value ao=(X of the heart point ao on coordinate system_ao,Y_ao), by it is described need to pass through it is farthest from obstacle centre point ao on barrier One point is labeled as barrier zone point a4, obtains value a4=(X of the barrier zone point a4 on coordinate system_a4,Y_a4), and The centre point ao and barrier zone point a4 is constructed into a barrier function (1)；

Wherein, the distance of obstacle that r is, f (x) are the barrier function of building, and x is becoming certainly for the barrier function of building Amount, and the value interval of x is [X_ao-r,X_ao+ r], the result that f (x) is obtained is the barrier function when independent variable x takes different value The depth of getable obstacle；

By constructing barrier function (1), the barrier is preferably embodied in a coordinate system, the need Pass through parabola and coordinate points (X that the region of barrier is formed in coordinate function f (x)_ao- r, Y_ao),(X_ao+ r, Y_ao) In the region that the straight line of composition is included, so that finally the parabola of barrier function can be avoided then in the best guide track of determination Barrier is passed through described in capable of avoiding, and the edge of the barrier function and practical obstacle object is very close to the obstacle letter then constructed Number can more preferably depict the tendency for needing to pass through barrier.

Step A3, curved section L3 is pierced by described in acquisition terminates the coordinate points b1 at place, obtains the coordinate points b1 in coordinate system Value b1=(X above_b1,Y_b1), and described value is brought into formula (2), function is passed through in building；

Wherein, g (x) is the function that passes through of building, and the value interval of x is [0, X_b1], and when x takes all values, corresponding g (x) parabola formed is then best guide track；

Step A4, the best guide track is brought into formula (3), so that it is determined that penetrating curved section L1, easement curve section L2, it is pierced by curved section L3；

Wherein, g ' (x) be to passing through function g (x) derivation, xL be it is final determine penetrate curved section L1, easement curve section L2, It is pierced by cut-point when curved section L3, when g ' (x) value is -0.1, corresponding xL is calculated labeled as xL1, as g ' (x) When value is 0.1, corresponding label, which is calculated, is；

Step A5, when the value interval of x is [0, xL1], the parabola that g (x) is formed then is to penetrate curved section L1, works as x Value interval be (xL1, xL2) when, g (x) formed parabola be then easement curve section L2, when x value interval be [xL2, X_b1] when, the parabola that g (x) is formed then is to be pierced by curved section L3.

Above-mentioned technical proposal the utility model has the advantages that

(1) above-mentioned technology is utilized, can intelligently and automatically obtain best guide track, and can also be to described best Guide track determination penetrates curved section L1, easement curve section L2, is pierced by curved section L3.

(2) above-mentioned technology is utilized, in the best guide track of determination, well-regulated does not need to pass through barrier for originally It is changed into the well-regulated barrier function of tool, enables preferably to avoid when intelligent decision described to need to pass through barrier.

It (3), can be according to the most deep point for the barrier that barrier function obtains, i.e., in Y-axis after determining barrier function The corresponding point of maximum value, origin, and be pierced by curved section L3 and terminate the coordinate points b1 at place and construct and pass through function so that it is described most The solution of good guide track becomes the process of an automatic calculation.

A kind of pipeline locking device, applied in " "-" type " integral conduit in claim 4, comprising:

Pipe cap 1, for conical hollow structure, the lesser one end of diameter is provided with the connector 2 for connecting reamer, One end that the pipe cap 1 is relatively large in diameter is connect with the port bolt seal of pipeline 3；Flange can be used between pipe cap 1 and pipeline 3 Sealing joint connection, convenient for pipe cap 1 is disassembled after pipe laying,

Bored plate 4 is sealed, is disc-shaped structure, is sealedly connected on the port of 3 other end of pipeline, it is described to seal on bored plate 4 It also extends through and is connected with outer tooth screw bar 5, a cap 6 is threaded on the outer tooth screw bar 5, the silk cap 6 is close to institute State the side for sealing and contacting on bored plate 4 with external environment；Sealing can be connected between bored plate 4 and pipeline 3 using flange-interface sealing It connects, is disassembled convenient for bored plate 4 will be sealed after pipe laying,

Drilling rod 7 is locked, is placed in inside pipeline 3, one end is fixedly connected with the pipe cap 1, and the other end is fixedly connected on described On outer tooth screw bar 5.

The working principle of above-mentioned technical proposal: ductile iron pipe pipeline joint is that socket joint slides into flexible interface, cushion rubber in pipeline Using T-type anticreep sealing rubber ring.The installation of anticreep sealing rubber ring is the same with conventional seals cushion rubber process, a Pipe installing also mould one Sample.According to prospective design duct length, in the trombone slide Way in for meeting installation requirement, " word " type completes pipeline peace on the coast Dress, pipe socket is against the direction of bench.Pipeline (generallys use 30min constant pressure 0.2Mpa) after suppressing qualification on the bank, completes Inner wall of the pipe drilling rod is assembled and is passed through, and manages the dedicated pipe cap 1 customized of interior locking 7 one connecting pipe heads of drilling rod, other end connects It is connected to and is sealed on the outer tooth screw bar 5 on bored plate 4 at pipe tail that (screw rod tensile strength has to be larger than maximum traction when trombone slide Power is shown in picture), it locking drilling rod 7 will be straightened in pipe with a cap 6 is turned, and lock the relative position of " word " type pipeline.Tube head is dedicated Pipe cap 1 connects is connector and reamer etc., it is the same with normal tube-pulling craft.Innovative design in this way, pipeline are being drawn Drilling rod stress is changed into pipeline axial stress in the process (self weight of pipeline+hole wall frictional force), opposite direction active force is to pipeline The jacking force of jacking force, pipeline is significantly larger than shear stress.Pipeline trombone slide in place after, dismantle dedicated pipe cap be very easy to because it What is connect with pipeline is ring flange interface, removes screw and is achieved that, the jointed rod in pipeline has bench cooperation light and easy It lifts and completes disassembly.

Above-mentioned technical proposal the utility model has the advantages that

1. make full use of physical mechanics and spheroidal graphite pipe performance, using changing non-digging tube-pulling tubing axially loaded direction, The mode of anti-avulsion cushion rubber fixed -piping interface completes common ductile iron pipe (barrier) in horizontal orientation non-digging tube-pulling Innovative usage, effectively reduce engineering cost.

2. simple installation: common bulb installation is simple and fast, and technical requirements content is low, and the graticule of macroscopic examination nozzle can With.

3. the fixed special part of the pipe cap and pipe tail screw rod of tube head, processing cost is low, cheap, convenient for disassembly and assembly.

4. this case is used in crossing project, the risk of the latent leakage of pipeline can be effectively reduced, have very to the control of production and marketing difference Important role.

In a kind of embodiment of pipeline locking device, the pipeline locking device further includes alarm system, the alarm System includes that the tearing sensing of locking drilling rod 7 and 1 junction of pipe cap and locking drilling rod 7 and outer 5 junction of tooth screw bar is arranged in Device, the strain gauge being attached on the locking drilling rod 7, the tearing sensor, strain gauge are connected electrically in same The first alarm, the second alarm has also been electrically connected in input terminal in control circuit, the output end of the control circuit, The control circuit includes:

Sensor is torn, pin 1 is connected with voltage input end, and pin 3 is grounded, and is also connected between pin 1,3 Capacitor C1, pin 2 have been sequentially connected in series resistance R1, inductance M1；

Strain gauge, pin 1 are connected with voltage input end, and pin 3 is grounded, and is also connected between pin 1,3 Capacitor C2, pin 2 have been sequentially connected in series resistance R2, inductance M2；

Capacitor C3, the upper end are connected with the right end of inductance M1, and lower end is connected with the right end of capacitor M2；

Multiplier (-icator) T1, normal phase input end are connected with R4, and the other end of R4 is separately connected R6, R7, negative-phase input point It is not connected with lower end, the resistance R3, capacitor C4 of capacitor C3, output end is connected with the one end R5；

Capacitor C4, the upper end are connected with the negative-phase input of the multiplier (-icator) T1, lower end ground connection；

Resistance R5, the other end have been sequentially connected in series resistance R6, resistance R7, the other end ground connection of resistance R7；

Zener diode P1, anode are connected with the right end of R5, and cathode is connected with the cathode of zener diode P2, pressure stabilizing The plus earth of diode P2；

Frequency transmitter W1, pin 1 are connected separately with the anode of resistance R8, diode D2, and the cathode of diode D2 connects The other end on ground, resistance R8 connects power supply；Its pin 2 is connected with the anode of zener diode P1；Its pin 3,4 ground connection；It draws Foot 5,9 connects power input；Its pin 8 is separately connected the cathode of diode D3, the one end capacitor C5, and the anode of diode D3 connects The other end on ground, capacitor C5 is connected with pin 7, pin 6；Pin 6 is also connect with resistance R9, capacitor C6 in parallel, pin 6, electricity Hinder R9, capacitor C6 ground connection；

Multiplier (-icator) T2, multiplier (-icator) T3, the voltage letter that the pin 7 of the negative-phase input rate of connections transmitter W1 of the two exports Number, the voltage signal is electric compared with resistance R10, R11, R12 composition that the normal phase input end of multiplier (-icator) T2, multiplier (-icator) T3 connect Road carries out voltage-contrast, and the output end of multiplier (-icator) T2 is connected with the first alarm L1, the output end of multiplier (-icator) T3 and the second alarm Device L2 is connected.

The working principle of above-mentioned technical proposal: since " "-" type " integral conduit is dragged into during institute in the laying of reaming pipeline The synthesis being subject to, which is returned, drags resistance that can be applied on the drilling rod ganged up, and becomes opposition, the effect of drilling rod under tension, i.e. pipeline Pipeline axial stress (self weight of pipeline+hole wall frictional force) changes into drilling rod stress during drawing in, therefore in entire pipeline paving If in the process, locking drilling rod is locked drilling rod and pipe cap junction, locking drilling rod and outer tooth screw bar by great combined stress Junction easily can be not connected firmly and separate because of excessive stress, be respectively provided with tearing in the two junctions and pass Sensor, when locking drilling rod is separated with pipe cap junction, locking drilling rod with outer tooth screw bar junction, tearing sensor is just Tearing signal can be transmitted in control circuit, in addition locking drilling rod 7 itself also will receive axial stress, therefore in locking drilling rod Strain gauge is set on 7, and when locking stress suffered by drilling rod 7 is more than that its maximum meets with stresses, strain gauge will It transmits a signal in control circuit.Control circuit is according to the first alarm of signal enabling received or the second alarm, and two The type of alarm of a alarm is different, for example the first alarm is flashing light alarm, the second alarm is audible alarm, is alarmed accordingly Which sensor signal deducibility belongs in output signal.Since pipeline laying environment is ground end, the signal transmission of sensor is not Stablize, in this control circuit, tears the two-way detection signal of sensor, strain gauge after filtering processing, reconvert It for digital square-wave, is transmitted again through signal conveying circuit after two zener diode pressure stabilizings, avoids signal and transmitting Decay in the process and is disturbed.

Above-mentioned technical proposal the utility model has the advantages that after the pressure stabilizing of two-stage voltage regulator circuit in control circuit, signal measurement, Acquisition precision is improved significantly, so that the signal in ground end working environment lower sensor also clearly, can be transferred out accurately, It allows the operator to accurately learn that the specific operating condition in " "-" type " integral conduit avoids to adjust it in time Irreversible accident occurs.

Finally, it should be noted that the foregoing is only a preferred embodiment of the present invention, it is not intended to restrict the invention, Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features, All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention In within protection scope.