CN102374337B - On-site random length installation and construction method and pipe assembly for pipe network - Google Patents
On-site random length installation and construction method and pipe assembly for pipe network Download PDFInfo
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Abstract
The invention relates to an on-site random length installation and construction method and an on-site random length installation and construction pipe assembly for a pipe network. A unit tolerance pipe fitting column comprises N unit tolerance pipe fittings, wherein the length of the nth unit tolerance pipe fitting is an, n is more than or equal to 1 and less than or equal to N and is a natural number, and the length from a1 to aN is increased sequentially by taking d as an equal difference; and a1 is more than or equal to 2 times of the standard effective thread length of pipe external threads, aN is more than or equal to 2a1-d, and d is a unit length tolerance. A set tolerance coupling column comprises K set tolerance coupling pieces, wherein the effective connection length of the kth set tolerance coupling piece is Gk, k is more than or equal to 1 and less than or equal to K and is a natural number, and the length from G1 to GK is increased sequentially by taking D as an equal difference; and G1 is equal to zero, and D is equal to (aN-a1)+d. A set tolerance pipe fitting column comprises M set tolerance pipe fittings, wherein the length of the mth set tolerance pipe fitting is Am, m is more than or equal to 1 and less than or equal to M and is a natural number, and the length from A1 to AM is increased by the K multiples of D (except for AM); and A1 is less than or equal to 2aN+GK+d-a1, and AM is the standard length of the integral pipe.
Description
Technical field
The present invention relates to the pipe assembly that pipe network construction method of installation and suitable pipe network are installed.
Background technique
Up to now, during pipe network was installed and connected, it still was Placement the simplest, most convenient that pipe thread connects.At present about this Placement of employing more than 50%, other modes such as welding, flange, socket joint, clip etc. are used in the inefficient occasion of pipe thread Placement.Pipe network connection method of construction can be divided into fixed length mounting and construction method and random length mounting and construction method.The fixed length mounting and construction method refers to that each pipeline length is determined in the pipe network, installation person only needs the pipe fitting specification demarcated according to drawing, the standardized annex of pre-processed tubing and its (as screw thread short circuit, pipe collar, threeway, elbow etc.) scene is connected get final product; As machinery equipment standard gas-liquid pressure pipe road (net) etc.When pipe fitting processed length and physical length in advance have when surpassing the error that allows, namely become the described random length installation in back.The random length installation refers to that namely job site physical length size and design drawing are variant, or does not have drawing, and the installation personnel are according to on-the-spot actual measurement length situation, change length and (or) mounting and construction method of interim processing length.This construction method whole world 100% all adopts the on-the-spot Len req tubing that cuts off, and the two ends of reproducing a mantle fiber or turning processing tubing make it become the pipe fitting that two ends have the externally threaded Len req of pipe, are formed by connecting in conjunction with its standardized annex; Or the auxiliary connection by more than 2 will be pre-processed the pipe fitting of fixed length pipe fitting composition Len req, again in conjunction with its standardized annex pipeline (net) that is formed by connecting.
Its shortcoming of method that solves the random length installation at present is:
1. on-the-spot must produce the pipe outside thread, production technology must lag behind factory's professional standard production, the control of pipe outside thread difficult quality, and product is difficult to recourse, produces product and installs and uses product and obscure;
2. produce man-hour short expected, waste material because the scene adds, and makes the tubing waste generally at 5%-20%;
3. installation nonstandardized technique, efficient is low, and labor intensity is big, and pressure testing success rate of pipe network is less than 100%;
4. the pipe fitting collection of the on-the-spot Len req that is formed by connecting by a plurality of auxiliary connections, length dimension calculation of complex not only, and can't realize that at all the pipeline length unit is connected; Pipe fitting quantity increases simultaneously, and the cost height is easy to generate leak source again, has potential safety hazard, can't promote at all.
By the top description various pipe outside threads of produced on-site of being not difficult to find to abandon, realize that the standardized key of the on-the-spot installation of pipe network is that the uncertain length in scene is become and can arrange in pairs or groups standardization length and form fixed length really in the scene, be implemented in the required pipeline of random length installation of the random lengths unit in the certain-length scope with minimum auxiliary connection (auxiliary connection), and consider that the specialization of the most rational factory is produced and the installer is easy and simple to handle.
Summary of the invention
Total design of the present invention is to abandon on-the-spot blank and produce various pipe outside threads, realize the on-the-spot installation standardization of pipe network, the uncertain length in scene is become and can arrange in pairs or groups standardization length and form fixed length really in the scene, realize the required pipeline of on-the-spot random length installation with minimum auxiliary connection (auxiliary connection), and consider the professional standard production of the most rational factory and on-the-spot installer's processing ease.
The purpose of one aspect of the present invention is to provide a kind of pipe network scene the random length pipeline to be installed the fixed length pipeline construction method of installation that becomes controlled length precision.
The purpose of another invention of the present invention is to provide a kind of specialized standardization pipe assembly of producing of factory that is suitable for the on-the-spot random length installation of pipe network.
For realizing the pipe assembly that is suitable for the on-the-spot random length installation of pipe network of described purpose, be characterized in, comprise unit tolerance pipe fitting row; Unit tolerance pipe fitting row comprise N unit tolerance pipe fitting, and N is natural number, and in this N the unit tolerance pipe fitting, the length of n unit tolerance pipe fitting is a
n, 1≤n≤N, n are natural number, a
1To a
NBe that equal difference increases successively with d; a
1Be equal to or greater than the effective thread length of 2 times pipe outside thread standard, a
N〉=2a
1-d, d are the unit length tolerance.
The described pipe assembly that is suitable for the on-the-spot random length installation of pipe network, its further characteristics are, also comprise and set tolerance coupling row and set tolerance pipe fitting row, set tolerance coupling row and comprise that K is set the tolerance male part, K is natural number, set in the tolerance male part for this K, k effective connection length of setting the tolerance male part is G
k, 1≤k≤K, k are natural number, G
1To G
KBe that equal difference increases successively with D; G
1Be null value, D is (a
N-a
1)+d; Set tolerance pipe fitting row and comprise that M is set the tolerance pipe fitting, M is natural number, sets in the tolerance pipe fitting for this M, and m the length of setting the tolerance pipe fitting is A
m, 1≤m≤M, m are natural number, A
1To A
MIncrease (A K times time with D
MCan except); A
1Be less than or equal to 2a
N+ G
K+ d-a
1, A
MBe the gage length of whole tubing, each pipe fitting is double end pipe male element, and setting the tolerance male part is the double end internal thread tube piece that mates with described pipe fitting.
The described pipe assembly that is suitable for the on-the-spot random length installation of pipe network, its further characteristics are, this unit tolerance pipe fitting row and should settings tolerance pipe fitting row in pipe fitting between by or by set tolerance be coupled be listed as in the connection of male part constitute a plurality of pipelines, the length range of these a plurality of pipelines is doubling the gage length of pipe outside thread standard effective thread length to whole tubing, is setting in the tolerance coupling row between last item length, the unit tolerance pipe fitting row last item length sum, and the length of these a plurality of pipelines is that equal difference is the ordered series of numbers of d.The described pipe assembly that is suitable for the on-the-spot random length installation of pipe network, its further characteristics are that the pipe fitting length overall after the combination is a
n+ G
k+ a
N+xOr a
n+ G
k+ A
m, the longest is 2A
M+ G
K, 0≤x≤N, x are integer; G wherein
K=(K-1) D, its K value can change the quantity of setting pipe fitting in the tolerance pipe fitting row.
Be the on-the-spot random length construction method of installation of the pipe network of realizing described purpose, it is characterized in that, double end pipe external thread length pipe fitting is divided into two big standard row classes, and namely unit tolerance pipe fitting row and setting tolerance pipe fitting row found into setting tolerance coupling row separately setting tolerance double end internal thread pipe collar; Wherein, unit tolerance pipe fitting row comprise N unit tolerance pipe fitting, and N is natural number, and in this N the unit tolerance pipe fitting, the length of n unit tolerance pipe fitting is a
n, 1≤n≤N, n are natural number, a
1To a
NBe that equal difference increases successively with d; a
1Be equal to or greater than the effective thread length of 2 times pipe outside thread standard, a
N〉=2a
1-d, d are the unit length tolerance; Set tolerance coupling row and comprise that K is set the tolerance male part, K is natural number, sets in the tolerance male part for this K, and k effective connection length of setting the tolerance male part is G
k, 1≤k≤K, k are natural number, G
1To G
KBe that equal difference increases successively with D; G
1Be null value, the K value is paid the utmost attention to, thereby determines to set tolerance pipe fitting queue size, and D is (a
N-a
1)+d; Set tolerance pipe fitting row and comprise that M is set the tolerance pipe fitting, M is natural number, sets in the tolerance pipe fitting for this M, and m the length of setting the tolerance pipe fitting is A
m, 1≤m≤M, m are natural number, A
1To A
MIncrease (A K times time with D
MCan except); A
1Be less than or equal to 2a
N+ G
K+ d-a
1, A
MGage length for whole tubing; Each pipe fitting is double end pipe male element, and male part is the double end internal thread tube piece that matches; The length a of the last item of unit length tolerance pipe fitting row
NDetermine to set the tolerance D of tolerance coupling row, and the pipe fitting length overall after the combination is a
n+ G
k+ a
N+xOr a
n+ G
k+ A
m, the longest is 2A
M+ G
K, 0≤x≤N, x are integer; G wherein
K=(K-1) D, its K value can change the quantity of setting pipe fitting in the tolerance pipe fitting row.
Be the on-the-spot random length construction method of installation of the pipe network of realizing described purpose, it is characterized in that, can be divided into two big standard pipe fitting row classes to all lengths tubing, namely unit tolerance pipe fitting is listed as and sets tolerance pipe fitting row, and the male part of connection length founds into setting tolerance coupling row separately setting effectively; Wherein, unit tolerance pipe fitting row comprise N unit tolerance pipe fitting, and N is natural number, and in this N the unit tolerance pipe fitting, the length of n unit tolerance pipe fitting is a
n, 1≤n≤N, n are natural number, a
1To a
NBe that equal difference increases successively with d; a
1Be equal to or greater than effective connection length of 2 times linkage structure standard, a
N〉=2a
1-d, d are the unit length tolerance; Set tolerance coupling row and comprise that K is set the tolerance male part, K is natural number, sets in the tolerance male part for this K, and k effective connection length of setting the tolerance male part is G
k, 1≤k≤K, k are natural number, G
1To G
KBe that equal difference increases successively with D; G
1Be null value, the K value can determine to set tolerance pipe fitting queue size, and D is (a
N-a
1)+d.Set tolerance pipe fitting row and comprise that M is set the tolerance pipe fitting, M is natural number, sets in the tolerance pipe fitting for this M, and m the length of setting the tolerance pipe fitting is A
m, 1≤m≤M, m are natural number, A
1To A
MIncrease (A K times time with D
MCan except); A
1Be less than or equal to 2a
N+ G
K+ d-a
1, A
MBe whole pipe standard length; The length a of the last item of unit length tolerance pipe fitting row
NDetermine to set the tolerance D of tolerance coupling row, and the pipe fitting length overall after the combination is a
n+ G
k+ a
N+xOr a
n+ G
k+ A
m, the longest is 2A
M+ G
K, 0≤x≤N, x are integer; G wherein
K=(K-1) D, its K value can change the quantity of setting pipe fitting in the tolerance pipe fitting row.
The invention has the beneficial effects as follows:
Unit tolerance pipe fitting row, the pipe fitting of setting in the tolerance pipe fitting row can be used for the random length construction separately, and these pipe fittings are used for the random length construction after by the coupling of setting the tolerance male part, between these pipe fittings or the pipe fitting by or can not satisfy the problem that the random length of the random lengths unit of pipe network in the certain-length scope is installed fully by the combination of setting the tolerance male part.Because the specialized pipe internal and external threads gage length pipe fitting of producing of factory, pipeline (net) installation can realize standardization, greatly improved installation quality and efficient, reduced the waste material wasting phenomena of the on-the-spot processing of installation tubing, made installation manage scientific rationalization more; Simultaneously can set up the pipe fitting length standard, promote tubing production industry length global standardsization, save a large amount of tubing raw material resources.
Description of drawings
Fig. 1 installs the installation principle schematic that connects family's gas meter and gas water-heater random length pipeline according to the present invention with DN15 (4 minutes) galvanized welded pipe.
Fig. 2 has shown coupling and the compound mode of the pipe fitting that is suitable for embodiment shown in Figure 1 to Fig. 7.
Fig. 8 has shown according to the four kind compound modes of pipe fitting of the present invention with the pipe assembly to Figure 11.
Figure 12 is the schematic representation of setting the tolerance male part.
Embodiment
Back described " standard " refers to CNS or international standard or company standard or is the particular specification that satisfies particular demands.
Unit tolerance pipe fitting row first term meets the effective thread length that various standard pipe threads connect, and the last item of setting tolerance pipe fitting row meets the pipe length of relevant criterion.
Double end pipe external thread length pipe fitting is divided into two big standard row classes: unit tolerance pipe fitting row and setting tolerance pipe fitting row, double end internal thread pipe collar is found into setting tolerance coupling row separately, wherein:
Unit tolerance pipe fitting row-by connect the Len req precision setting, have the d of length unit equal difference or its integral multiple, from a
1To a
NThe pipe fitting row unit of being defined as tolerance pipe fitting row, its precision unit can be metric unit: millimeter, centimetre, meter; Or English unit: made in Great Britain 1/10 o'clock, the time, chi, sign indicating number, a
n=a
1+ (n-1) d, wherein, a
nBe the length of n unit tolerance pipe fitting, N is the maximum number of n, and n is natural number, 1,2,3 Length unit tolerance d is one or more precision unit;
2. the first term a during unit tolerance pipe fitting is listed as
1Should be equal to or greater than the effective thread length of 2 times various standard pipe threads;
3. the last item a during unit tolerance pipe fitting is listed as
NMust be more than or equal to 2a
1-d, and consider to set tolerance coupling row and set the pipe fitting quantity of tolerance pipe fitting row and decide;
4. set the tolerance coupling and be listed as-have equal difference D=(a
N-a
1)+d, from G
1To G
KCoupling row be defined as and set tolerance coupling row, G
K=(K-1) D, wherein, G
kBe k the effective length of setting the tolerance male part, K is the maximum number of k, and k is natural number, 1,2,3 First term G
1Be 0;
5. set the last item G of tolerance coupling row
KValue should be paid the utmost attention to, and K numerical value can change the quantity of setting pipe fitting in the tolerance pipe fitting row;
6. set the tolerance pipe fitting be listed as-have equal difference KD, from A
1To A
MPipe fitting row be defined as and set tolerance pipe fitting row, A
m=A
1+ (m-1) KD, A
MExcept, wherein, A
mBe m the length of setting the tolerance pipe fitting, M is the maximum number of m, and m is natural number, 1,2,3
7. set the first term A in the tolerance pipe fitting row
1Value should be less than or equal to 2a
N+ G
K+ d-a
1, A
1Choosing of value should be intended also being calculated as easily with big integer to produce and principle easy to use;
8. set the last item A of tolerance length pipe fitting row
MBe the standard pipe length, be generally 6 meters or other specific pipe length, thereby last item A
MWith A
M-1Between may not be the equal difference relation of KD;
9. the pipe fitting length overall after the combination is a
n+ G
k+ A
mOr a
n+ G
k+ a
N+x, the longest is 2A
M+ G
K,, 0≤x≤N; X is integer.
When practical application, a
1, a
N, d and K value should consider various pipe network situations (as factors such as the restriction of pipe material and production technology, caliber, Placement, pitch, length EE Error Excepted, plant produced convenience, production technology, the management of applying unit pipe fitting and installation convenience of calculation), meeting under the disclosed calculating principle situation, decide a
1, a
N, the optimum matching point between d and the K.
Be example was listed as and set tolerance pipe fitting row combination meter (N-K-KD) to table five unit of explanation tolerance pipe fitting row, the coupling of setting tolerance in conjunction with the table one of back establishment method with the DN15 pipe now.The establishment method of the unit tolerance pipe fitting row of other caliber, setting tolerance coupling row and setting tolerance pipe fitting row combination meter is identical.
One. the first term length a of unit tolerance pipe fitting row
1Determine:
a
1Must be more than or equal to the effective thread length of 2 times various standard pipe threads;
For 55 degree seal tube screw threads, looking in the base dimension of standard GB/T7306.2-2000 table 1 screw thread and the tolerance thereof the 15th, 16,17 externally threaded effective thread length learns, its reference range is respectively basic 13.2mm, maximum 15mm, minimum 11.4mm.In order to guarantee be threaded intensity and sealing property in full force and effect, get the maximum effective thread length 15mm of regulation, draw a of DN15 pipe
1Be 15mm * 2=30mm.
For the non-seal tube screw thread of 55 degree, with reference to the method for above-mentioned 55 degree seal tube screw threads.
For 60 degree seal tube screw threads, look into that the 9th L2 reference range is that 8.128mm and the 11st L3 fitting allowance are 5.443mm in the base dimension of GB/T12716-2002 table 2 taper pipe thread.Length and standard pipe size with reference to pipe joint in American National Standard A733-03 " welding and seamless carbon steel and Austriaization body stainless steel joint for pipeline standard specification " table 2: 1/2 (DN15) pipe short circuit (CLOSE) length is 28.575mm (1-1/8).With for the purpose of the unification, also getting 30mm is the tolerance pipe fitting row first term a of unit for convenience
1
For the DN15 pipe, get 30 millimeters based on aforementioned various standards and be unit tolerance pipe fitting row first term value like this.
Two. the tolerance d of unit tolerance pipe fitting row determines:
For embodiment is described, now get d and be 1 millimeter (as table one to table three), this moment, pipe network length of installation theoretical error was 0 millimeter; But according to the combustion gas of China family actual conditions are installed, d desirable 5 millimeters (as shown in Table 4), this moment, pipe network length of installation theoretical error was at 2 millimeters;
Three. the last item length a of unit tolerance pipe fitting row
NDetermine:
a
NMust be more than or equal to 2a
1-d, d=1 millimeter, a at this moment
NMinimum value is 59 millimeters (shown in table one and tables two); Considering and reducing the pipe fitting quantity of setting tolerance coupling row and setting tolerance pipe fitting row as far as possible, and DN15 galvanized welded pipe tubing, the required precision of combustion gas length of installation, factory's professional standard production and installation management, workman calculate factors such as convenience, a
NGet 79 millimeters (as shown in Table 3); If d gets 5 millimeters, a
NIn the time of desirable 75 millimeters (as shown in Table 4);
Four. set tolerance coupling row G
kDetermine:
For present embodiment is described, consider that simultaneously factory's professional standard production and installation management, the workman of DN15 combustion gas galvanized welded pipe pipe fitting calculates factors such as convenience, when the tolerance D=30 millimeter of setting tolerance coupling row, K got 1 o'clock, G
1=0 millimeter (as shown in Table 1), K got 2 o'clock, G
2=30 millimeters (as shown in Table 2); When its tolerance D=50 millimeter, K got 1 o'clock, G
1=0 millimeter (as shown in Table 3); K got 10 o'clock, G
10=450 millimeters (as shown in Table 4); Its K value can determine to set tolerance pipe fitting queue size, should factors such as actual conditions and custom be installed according to tubing production technology, caliber, pipe network and decide.
Five. set the foundation of tolerance pipe fitting row:
Because A
1Be 2a
N+ G
K+ d-a
1So, A
1Be 89 millimeters (as shown in Table 1), A
1Be 119 millimeters (as shown in Table 2), A
1Be 129 millimeters (as shown in Table 3), A in the table four
1For calculated value be 575 millimeters, consider convenience of calculation, A
1Get 500 millimeters, set A
MBe 6 meters of present general pipe lengths (6 meters setting tolerance pipe fitting must occur, and itself and previous pipe fitting may not be equal difference KD relation).
From following four tables, as can be seen, satisfying under the disclosed calculating principle situation:
1.a
1Value choose should with produce with simple and easy to use be principle, as get 30 millimeters (as tables one to table four);
2.d the choosing of value can change the pipe fitting quantity (as shown in Table 4) in the unit tolerance pipe fitting tabulation;
3.a
NThe choosing of value determined the pipe fitting quantity in the unit tolerance pipe fitting tabulation, determines the value (as the difference of table one and table two and table three and table four) of tolerance D in the tolerance coupling row simultaneously;
4.D the decision of value should be simultaneously with produce with simple and easy to use be principle, and consider to set the tolerance of tolerance pipe fitting row, as 30 millimeters (shown in table one and tables two), 50 millimeters (shown in table three and tables four) etc.;
5. K numerical value can change the pipe fitting quantity of setting in the tolerance pipe fitting row (as the difference of table one and table three and table two and table four) in the setting tolerance coupling row; Choosing of K numerical value should be according to different pipe material, tubing production technology, caliber and pipe network installation situation and custom, and factory's professional standard production rationality and deciding;
6.A
1Choosing of value should be to produce and principle simple and easy to use, considers big integer for well, but A
1Must be less than or equal to 2a
N+ G
K+ d-a
1, as 500 millimeters (as shown in Table 4), 100 millimeters (as shown in Table 5) etc.
Table five is according to described calculating principle and improves the form of gained after considering situation such as installed facility.
Table one: DN15 (30-1-30) pipe joint gage length table (millimeter)
Work as a
1=30 millimeters, d=1 millimeter, a
NGet 59 millimeters, D is 30 millimeters, G
kMiddle K got G at 1 o'clock
k=0; A
1Be 89 millimeters, the quantity of unit tolerance pipe fitting tabulation is 30, and the quantity of setting tolerance coupling tabulation is 1, and the quantity of setting tolerance pipe fitting tabulation is 199, amounts to 230 kinds, and is as shown in the table;
Table two: DN15 (30-2-60) pipe joint gage length table (millimeter)
Work as a
1=30 millimeters, d=1 millimeter, a
NGet 59 millimeters, D is 30 millimeters, G
kMiddle K got G at 2 o'clock
2=30 millimeters; A
1Be 119 millimeters, the quantity of unit tolerance pipe fitting tabulation is 30, and the quantity of setting tolerance coupling tabulation is 2, and the quantity of setting the tabulation of tolerance pipe fitting is 100, amounts to 132 kinds, and is as shown in the table;
Table three: DN15 (50-1-50) pipe joint gage length table (millimeter)
Work as a
1=30 millimeters, d=1 millimeter, a
NGet 79 millimeters, D is 50 millimeters, G
kMiddle K got G at 1 o'clock
1=0; A
1Be 129 millimeters, the quantity of unit tolerance pipe fitting tabulation is 50, and the quantity of setting tolerance coupling tabulation is 1, and the quantity of setting tolerance pipe fitting tabulation is 119, amounts to 170 kinds, and is as shown in the table.
Table four: DN15 (50-10-500) pipe joint gage length table (millimeter)
Work as a
1=30 millimeters, d=5 millimeter, a
NGet 75 millimeters, D is 50 millimeters, G
kMiddle K got G at 10 o'clock
1=0, G
2=50 millimeters ..., G
10=450 millimeters; A
1Calculated value is 575 millimeters, in order to simplify calculating, gets A
1=500 millimeters; The quantity of unit tolerance pipe fitting tabulation is 10, and the quantity of setting tolerance coupling tabulation is 10, and the quantity of setting tolerance pipe fitting tabulation is 10, amounts to 30 kinds, and is as shown in the table.
Below family's gas meter is installed and the gas water-heater pipeline is example with the DN15 galvanized welded pipe, be described further in conjunction with the embodiments of the invention of Fig. 1.For factory's professional standard production and on-the-spot installation convenience of calculation, according to above-mentioned table three: DN15 (50-1-50) pipe joint gage length table (millimeter), be modified into table five: DN15 (50-2-100) (improving the back) pipe joint gage length table (millimeter).
Customer requirement is installed in gas meter and gas water-heater from wall 1100mm and 2300mm respectively, and road clearance is 1700mm and 1300mm place.After fixing gas meter and water heater, it be 936mm that actual measurement A, B, C, D, E, F pipe respectively need A, and B is 60mm, and C is 60mm, and D is 650mm, and E is 1219mm, and F is 93mm.
According to the inventive method, look into the table five of back: the A pipe should be joined 900mm+36mm, and the B pipe should be joined 60mm, and the C pipe should be joined 60mm, and the D pipe should be joined 650mm, and the E pipe should be joined 1150mm+69mm, and the F pipe should be joined 30mm+63mm, in the concrete configuring arrange table of comparisons below.Can realize that by the specialized gage length pipe male element of producing of factory and gage length internal thread pipe collar on-the-spot nothing is produced in pipe thread, the certain-length scope, random length, length unit gap, the installation of standardization pipeline arbitrarily like this.
The pipe fitting configuration table of comparisons
Table five: DN15 (50-2-100) improves back pipe joint gage length table (millimeter)
a
1=30 millimeters, d=1 millimeter, a
NGet 79 millimeters, D is 50 millimeters, and K gets 1, G
1=0, A
1Get theoretical calculating and should be 129 millimeters, calculate A for the ease of factory's professional standard production pipe internal and external threads pipe fitting and on-the-spot installation workman
1Get 100 millimeters, as shown in the table.
To four kinds of combinations shown in Figure 11, can mix into length a by following Fig. 8
1To A
M+ G
K+ a
NEqual difference is the various pipelines of d.As shown in Figure 8, only the unit's of employing tolerance pipe fitting row can be realized length a
1To a
NEqual difference be the various pipelines of d.As shown in Figure 9, after the two pipe fittings that adopts unit tolerance pipe fitting to be listed as joins by the pipe collar in the setting tolerance coupling row, can realize length 2a
1To 2a
N+ G
KEqual difference be the various pipelines of d.As shown in Figure 10 and Figure 11, a pipe fitting that adopts single setting tolerance pipe fitting or unit tolerance pipe fitting row and a pipe fitting of setting tolerance pipe fitting row can be realized length A by after setting pipe collar in the tolerance coupling row and joining
1To A
M+ G
K+ a
NEqual difference be the various pipelines of d.Pipe fitting after the combination is the longest to be 2A
M+ G
KThese combinations and other combinations can be satisfied the problem of the random length installation of the random lengths unit of pipe network in the certain-length scope fully.
Claims (6)
1. a pipe assembly that is suitable for the on-the-spot random length installation of pipe network is characterized in that, comprises unit tolerance pipe fitting row, these unit tolerance pipe fitting row comprise N unit tolerance pipe fitting, N is natural number, and in this N the unit tolerance pipe fitting, the length of n unit tolerance pipe fitting is a
n, 1≤n≤N, n are natural number, a
1To a
NBe that equal difference increases successively with d; a
1Be equal to or greater than the effective thread length of 2 times pipe outside thread standard, a
N〉=2a
1-d, d are the unit length tolerance.
2. the pipe assembly that is suitable for the on-the-spot random length installation of pipe network as claimed in claim 1, it is characterized in that, also comprise and set tolerance coupling row and set tolerance pipe fitting row, set tolerance coupling row and comprise that K is set the tolerance male part, K is natural number, set in the tolerance male part for this K, k effective connection length of setting the tolerance male part is G
k, 1≤k≤K, k are natural number, G
1To G
KBe that equal difference increases successively with D; G
1Be null value, D is (a
N-a
1)+d; Set tolerance pipe fitting row and comprise that M is set the tolerance pipe fitting, M is natural number, sets in the tolerance pipe fitting for this M, and m the length of setting the tolerance pipe fitting is A
m, 1≤m≤M, m are natural number, A
1To A
MPerhaps A
1To A
M-1Doubly time increase of K with D; A
1Be less than or equal to 2a
N+ G
K+ d-a
1, A
MBe the gage length of whole tubing, each pipe fitting is double end pipe male element, and setting the tolerance male part is the double end internal thread tube piece that mates with described pipe fitting.
3. the pipe assembly that is suitable for the on-the-spot random length installation of pipe network as claimed in claim 2, it is characterized in that, this unit tolerance pipe fitting row and should settings tolerance pipe fitting row in pipe fitting between by or by set tolerance be coupled be listed as in the connection of male part constitute a plurality of pipelines, the length range of these a plurality of pipelines is doubling the gage length of pipe outside thread standard effective thread length to whole tubing, is setting in the tolerance coupling row between last item length, the unit tolerance pipe fitting row last item length sum, and the length of these a plurality of pipelines is that equal difference is the ordered series of numbers of d.
4. the pipe assembly that is suitable for the on-the-spot random length installation of pipe network as claimed in claim 3 is characterized in that the pipe fitting length overall after the combination is a
n+ G
k+ a
N+xOr a
n+ G
k+ A
m, the longest is 2A
M+ G
K, 0≤x≤N, x are integer; G wherein
K=(K-1) D, its K value can change the quantity of setting pipe fitting in the tolerance pipe fitting row.
5. the on-the-spot random length construction method of installation of pipe network is characterized in that, double end pipe external thread length pipe fitting is divided into two big standard row classes, and namely unit tolerance pipe fitting row and setting tolerance pipe fitting row stand into setting tolerance coupling row to double end internal thread pipe collar separately; Wherein, unit tolerance pipe fitting row comprise N unit tolerance pipe fitting, and N is natural number, and in this N the unit tolerance pipe fitting, the length of n unit tolerance pipe fitting is a
n, 1≤n≤N, n are natural number, a
1To a
NBe that equal difference increases successively with d; a
1Be equal to or greater than the effective thread length of 2 times pipe outside thread standard, a
N〉=2a
1-d, d are the unit length tolerance; Set tolerance coupling row and comprise that K is set the tolerance male part, K is natural number, sets in the tolerance male part for this K, and k effective connection length of setting the tolerance male part is G
k, 1≤k≤K, k are natural number, G
1To G
KBe that equal difference increases successively with D; G
1Be null value, the K value is paid the utmost attention to, thereby determines to set tolerance pipe fitting queue size, and D is (a
N-a
1)+d; Set tolerance pipe fitting row and comprise that M is set the tolerance pipe fitting, M is natural number, sets in the tolerance pipe fitting for this M, and m the length of setting the tolerance pipe fitting is A
m, 1≤m≤M, m are natural number, A
1To A
MPerhaps A
1To A
M-1Doubly time increase of K with D; A
1Be less than or equal to 2a
N+ G
K+ d-a
1, A
MGage length for whole tubing; Each pipe fitting is double end pipe male element, and male part is the double end internal thread tube piece that matches; The length a of the last item of unit tolerance pipe fitting row
NDetermine to set the tolerance D of tolerance coupling row, and the pipe fitting length overall after the combination is a
n+ G
k+ a
N+xOr a
n+ G
k+ A
m, the longest is 2A
M+ G
K, 0≤x≤N, x are integer; G wherein
K=(K-1) D, its K value can change the quantity of setting pipe fitting in the tolerance pipe fitting row.
6. the on-the-spot random length construction method of installation of a pipe network, it is characterized in that, all lengths tubing is divided into two big standard pipe fitting row classes, and namely unit tolerance pipe fitting is listed as and sets tolerance pipe fitting row, and the male part of connection length founds into setting tolerance coupling row separately setting effectively; Wherein, unit tolerance pipe fitting row comprise N unit tolerance pipe fitting, and N is natural number, and in this N the unit tolerance pipe fitting, the length of n unit tolerance pipe fitting is a
n, 1≤n≤N, n are natural number, a
1To a
NBe that equal difference increases successively with d; a
1Be equal to or greater than effective connection length of 2 times linkage structure standard, a
N〉=2a
1-d, d are the unit length tolerance; Set tolerance coupling row and comprise that K is set the tolerance male part, K is natural number, sets in the tolerance male part for this K, and k effective connection length of setting the tolerance male part is G
k, 1≤k≤K, k are natural number, G
1To G
KBe that equal difference increases successively with D; G
1Be null value, the K value can determine to set tolerance pipe fitting queue size, and D is (a
N-a
1)+d; Set tolerance pipe fitting row and comprise that M is set the tolerance pipe fitting, M is natural number, sets in the tolerance pipe fitting for this M, and m the length of setting the tolerance pipe fitting is A
m, 1≤m≤M, m are natural number, A
1To A
MPerhaps A
1To A
M-1Doubly time increase of K with D; A
1Be less than or equal to 2a
N+ G
K+ d-a
1, A
MBe whole pipe standard length; The length a of the last item of unit tolerance pipe fitting row
NDetermine to set the tolerance D of tolerance coupling row, and the pipe fitting length overall after the combination is a
n+ G
k+ a
N+xOr a
n+ G
k+ A
m, the longest is 2A
M+ G
K, 0≤x≤N, x are integer; G wherein
K=(K-1) D, its K value can change the quantity of setting pipe fitting in the tolerance pipe fitting row.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010257596 CN102374337B (en) | 2010-08-19 | 2010-08-19 | On-site random length installation and construction method and pipe assembly for pipe network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010257596 CN102374337B (en) | 2010-08-19 | 2010-08-19 | On-site random length installation and construction method and pipe assembly for pipe network |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102374337A CN102374337A (en) | 2012-03-14 |
| CN102374337B true CN102374337B (en) | 2013-09-04 |
Family
ID=45793376
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010257596 Active CN102374337B (en) | 2010-08-19 | 2010-08-19 | On-site random length installation and construction method and pipe assembly for pipe network |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102374337B (en) |
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|---|---|---|---|---|
| CN2200093Y (en) * | 1994-06-01 | 1995-06-07 | 闵国龙 | Connecting method and conencting piece for water pipe |
| CN1125303A (en) * | 1994-10-13 | 1996-06-26 | 瓦卢莱克石油天然气公司 | Threaded joint for pipes |
| CN101173731A (en) * | 2007-05-29 | 2008-05-07 | 广东联塑科技实业有限公司 | Pipe connecting method |
| CN101294646A (en) * | 2007-04-24 | 2008-10-29 | 三星电子株式会社 | Pipe connection sleeve and air conditioner with the same |
| CN201218372Y (en) * | 2008-06-19 | 2009-04-08 | 中国石油天然气集团公司 | Screw connector of bi-metal composite pipe |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02102989A (en) * | 1988-10-08 | 1990-04-16 | Sanso Aaku Kogyo Kk | Method of fitting oxygen lance pipe with different outer diameters to holder and pipe socket used therein |
-
2010
- 2010-08-19 CN CN 201010257596 patent/CN102374337B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2200093Y (en) * | 1994-06-01 | 1995-06-07 | 闵国龙 | Connecting method and conencting piece for water pipe |
| CN1125303A (en) * | 1994-10-13 | 1996-06-26 | 瓦卢莱克石油天然气公司 | Threaded joint for pipes |
| CN101294646A (en) * | 2007-04-24 | 2008-10-29 | 三星电子株式会社 | Pipe connection sleeve and air conditioner with the same |
| CN101173731A (en) * | 2007-05-29 | 2008-05-07 | 广东联塑科技实业有限公司 | Pipe connecting method |
| CN201218372Y (en) * | 2008-06-19 | 2009-04-08 | 中国石油天然气集团公司 | Screw connector of bi-metal composite pipe |
Non-Patent Citations (1)
| Title |
|---|
| JP平2－102989A 1990.04.16 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102374337A (en) | 2012-03-14 |
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Effective date of registration: 20200427 Address after: 200120 Room 502, no.1122, Xinjinqiao Road, China (Shanghai) pilot Free Trade Zone, Pudong New Area, Shanghai Patentee after: SHANGHAI PAN-CHINA FASTENING SYSTEM Co.,Ltd. Address before: Room 1122, 502 Jinqiao Road, Shanghai, Pudong New Area Patentee before: Zhou Jun |
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