CN201391624Y - Pipe plugging sandwich valve - Google Patents
Pipe plugging sandwich valve Download PDFInfo
- Publication number
- CN201391624Y CN201391624Y CN200920105682U CN200920105682U CN201391624Y CN 201391624 Y CN201391624 Y CN 201391624Y CN 200920105682 U CN200920105682 U CN 200920105682U CN 200920105682 U CN200920105682 U CN 200920105682U CN 201391624 Y CN201391624 Y CN 201391624Y
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- valve body
- spool
- leading screw
- valve
- transmission shaft
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Abstract
The utility model relates to an improved pipe plugging sandwich valve, which relates to the technical field of pipe systems. A middle valve body (2) sandwiched between an upper valve body (1) and a lower valve body (4) abuts against a valve spool (3), a lead screw (5) connected with the valve spool (3) is connected with a driving shaft (10) via a positioning pin (7) and penetrates through a lead screw shaft sleeve (8), and the outer end of the driving shaft (10) is connected with piston rods of two hydraulic cylinders (11) through a connecting plate (12). The pipe plugging sandwich valve is characterized in that the upper valve body (1), the lower valve body (4) and the valve spool (3) are provided with bosses, the upper valve body (1) and the lower valve body (4) are respectively provided with annular bosses on two sides of the outer edge of a circular hole holding the valve spool (3), the valve spool (3) is provided with an annular boss outside a sealing ring, and after the upper valve body (1), the lower valve body (4) and the valve spool (3) are combined, the bosses on the inner sides of the upper valve body (1) and the lower valve body (4), the boss of the valve spool (3) and the sealing ring are pressed together tightly.
Description
Technical field
The utility model is a kind of improved pipe plugging sandwich valve.Relate to the pipe-line system technical field.
Background technique
Sandwich valve plays the effect of forming a connecting link in the pipe plugging operation, can whether sandwich valve works have safely and effectively not only determined the pipe plugging operation carry out smoothly, still concern equipment, an important step of personnel and Environmental security, therefore choosing in the sandwich valve design for safety coefficient usually relatively than higher weights.Because of process quality issue, the influence of factors such as unreasonable structure, sandwich valve is subjected to the effect of line pressure the valve seal weak effect may occur, open problems such as effort, thereby cause medium to be revealed, leading screw a series of grave danger accidents such as scurry out gently then injure operator's personal safety or damage equipment, and are heavy then pipeline blast and personnel death are taken place.Caliber size continues to increase, and operating pressure constantly raises, and the structure of sandwich valve must constantly be improved according to reality, improves its Security, could bring into play due effectiveness in pipeline shutoff construction operation.
Particularly, there are following three big problems in prior art:
1. valve pocket degree of vacuum: sandwich valve is operation under high pressure, and during Open valve, spool is regained in the chamber, can produce pull of vacuum under the high pressure effect, and the big more pull of vacuum of caliber is just big more, at this moment Open valve effort relatively just;
Sandwich valve plays a part to connect threeway and perforate shutoff equipment, often opens in construction or closes, because sandwich valve bears the pipeline operating pressure, so the requirement of the safety coefficient of sandwich valve is very big; Require the last pressure balance of spool when sandwich valve is normally opened, but valve can be opened when pressure reduction up and down is very little in the practical operation, this wherein relates to the error of gauge pressure demonstration; Spool is opened during pressure uneven, causes spool to move thereby the pull of vacuum of generation can hold spool, and firmly Open valve is not only required great effort by force, and very likely damages transmission part;
2. leading screw play:
When leading screw rotarily opened spool, if pipeline operating pressure value is higher, the thrust that the gland bolt of leading screw end is produced by high pressure just may influence and causes damaging, and the danger that leading screw is outwards scurried out takes place; The strength that leading screw is scurried out under the high-pressure situations is very big, with entail dangers to sandwich valve rear end operator's life safety;
What prevent the leading screw play is the gland of leading screw end, and gland is connected with four sunk screws with valve body, limit by valve body structure, and the diameter of sunk screw is not very big, generally gets between M10～14; Regain spool when pressure imbalance, manifold pressure will all pass on the terminal gland screw, and when thrust surpasses the resistivity of sunk screw, leading screw is impaired and play flies out; The pipeline operating pressure of using sandwich valve is big more, and the probability that this type of accident takes place is just big more;
3. spool tilts:
When sandwich valve cut out, the spool downside was upwards lifted by the pipeline pressure effect to combine with the upper valve body boss face to form sealing;
Spool and driving component are one, so the force analysis of lifting on the pressurized under the situation can be considered the fixing overhang type of the unsteady the other end of an end; The stressed generation rotation of spool is shown as the dress attitude in valve body; This state lower valve core and the last lower valve plate realization excellent sealing of can't combining closely, this problem is particularly outstanding in the heavy caliber sandwich valve.
The model utility content
The purpose of this utility model is the safe and reliable pipe plugging sandwich valve that a kind of anti-leading screw play of design and spool tilt.
The utility model is primarily aimed in the past the problem that the sandwich valve of design reflects in application, carry out well designed targetedly, guarantee that these pipe plugging auxiliary products of sandwich valve fully adapt to the pipeline market new situations of continuous development, for the pipe plugging construction operation provides safer service.
The utility model is a kind of improvement design, and it is perfect on the basis of its general structure that yes.Existing pipe plugging sandwich valve is divided into small-sized sandwich valve and two kinds of structures of large-scale sandwich valve.The general structure of small-sized sandwich valve such as Fig. 1, the general structure of large-scale sandwich valve such as Fig. 2.Their general structure difference only is transmission device, and other all is identical.Their same section comprises upper valve body 1, middle valve body 2, spool 3, following valve body 4.Upper valve body 1, down valve body 4 and middle valve body 2 Bolt Connection, spool 3 left and right sides movable switch valve in middle valve body 2, and seal with the formation that offsets of upper valve body 1 and following valve body 4.Spool 3 is connected with leading screw 5 usefulness transmission trapezoidal threads in the small-sized sandwich valve structure, carries out valve opening by the rotation of screw thread, and leading screw 5 ends of connection are equipped with female 6 by positioning dowel 7 and leading screw and carry out the leading screw location, prevent the leading screw play.Spool 3 and transmission shaft 10 is connected by spool hinging pin shaft 9 in the large-scale sandwich valve structure, and transmission shaft 10 connects together by connecting plate 12 with two hydraulic jacks 11, and the flexible drive transmission shaft 10 by two hydraulic jacks 11 makes spool 3 move the formation valve opening.On the whole, existing pipe plugging sandwich valve comprises upper valve body 1, middle valve body 2, spool 3, following valve body 4, leading screw 5, positioning dowel 7, leading screw axle sleeve 8, transmission shaft 10, hydraulic jack 11, connecting plate 12, be clipped in upper valve body 1, descend the middle valve body 2 of 4 of valve bodies to offset with spool 3, the leading screw 5 that is connected with spool 3 is connected with transmission shaft 10 by positioning dowel 7 and passes leading screw axle sleeve 8, and transmission shaft 10 outer ends are connected with the piston rod of two hydraulic jacks 11 by connecting plate 12.
First improvement of the present utility model is the boss that increases upper valve body 1, following valve body 4 and spool 3, sees Fig. 1-Fig. 7.Upper valve body 1, following valve body 4 are on the both sides, circular hole outer that hold spool 3 round ring boss (seeing Fig. 3, Fig. 4 and Fig. 5) to be arranged respectively; Spool 3 is that round ring boss (seeing Fig. 6 and Fig. 7) is arranged outside seal ring; When upper valve body 1, down after valve body 4 and spool 3 combinations, upper valve body 1, boss, the seal ring of the boss of 4 liang of inboards of valve body and spool 3 (see figure 8) that tightly forces together down.
When closing spool, seal ring is combined to form sealing surface with the boss that design increases, and when valve opening, spool were regained in the chamber, because the existence of boss, the degree of vacuum of generation can be discharged in the chamber rapidly.Though boss reduces the sealed faying face scope to some extent, but still be enough to the sealing effect that reaches good, effectively solve the sandwich valve that degree of vacuum produces simultaneously and open the effort problem, the protection device security improves working life.
Second improvement of the present utility model is to prevent leading screw 5 plaies, sees Fig. 9 for details.It is to twist at the termination point casing of leading screw 5 to overlap leading screw axle sleeve 8 again after leading screw is equipped with female 6, holds out against with leading screw axle sleeve 8.It is nuts that pin hole is arranged that leading screw is equipped with female 6, be screwed on the leading screw 5 after, be screwed into the location by positioning dowel 7.
Wherein fully female 6 (the seeing Figure 11 and Figure 12) of leading screw are that the round nut of laterally wearing screw and tangent plane being arranged at screw two collar extensions is arranged.
Prevent in the small-sized before sandwich valve structure that leading screw 5 plaies from being that four sunk screws of gland 13 and middle valve body 2 usefulness of leading screw 5 ends are connected, limit by valve body structure, the diameter of sunk screw is not very big, generally gets between M10～14.Regain spool 3 when pressure balance, manifold pressure will all pass on the terminal gland screw, and when thrust surpasses the resistivity of sunk screw, leading screw 5 is impaired and play flies out.The pipeline operating pressure of using sandwich valve is big more, and the probability that this type of accident takes place is just big more.
Structure of the present utility model is to install leading screw additional to be equipped with femalely 6 on leading screw 5, and leading screw is equipped with female 6 and is connected by trapezoidal thread with leading screw 5, and is fixed to the end of leading screw 5 with positioning dowel 7, makes leading screw mother 6 and leading screw 5 formation one fully.When leading screw 5 rotarily opens valve, leading screw is equipped with mother 6 and together rotates with leading screw 5, trapezoidal thread is regained spool 3 and is formed valve opening in the cavity of middle valve body 2, when pressure produces surging, the active force that manifold pressure transforms all passes to leading screw and is equipped with on mother 6 and the middle valve body 2 inwall surface of contact, leading screw is equipped with mother 6 just can resist the thrust that pipeline pressure produces with the opposite force that leading screw 5 engagements produce, and prevents leading screw 5 axial floats.
The 3rd improvement of the present utility model is to change spool 3 tilt problem in cavity.Connecting format with spool 3 and driving component changes floating hinge joint into exactly, replaces the hinged (see figure 10) of screw thread of design in the past.The floating hinge joint of transmission shaft 10 and spool 3 is that insert in the hole of spool 3 ends the termination of transmission shaft 10, and passes spool 3 and transmission shaft 10 in the part that transmission shaft 10 inserts spools 3 in the lump by spool bearing pin 9, makes transmission shaft 10 and spool 3 hinged.Here after transmission shaft 10 inserts spool 3, between transmission shaft 10 and spool 3 holes certain interval is arranged, spool 3 serves as that axle can be done certain swing with spool bearing pin 9.
The wherein shape of leading screw axle sleeve 8 such as Figure 13 and shown in Figure 14, it is a pipe section.
The shape of spool bearing pin 9 as shown in figure 15, it is the porose circular shafts in two ends.
Floating hinge joint adopts the mode of bearing pin pulling, and spool is floated, and then avoids lifting on the pressurized generation and tilt, and helps the excellent sealing of valve.
As seen, three improvement of the present utility model, the unsafe factor and the spool of relatively requiring great effort because of the generation pull of vacuum makes Open valve when having overcome Open valve, bringing because of the leading screw play tilt to cause sealing poor deficiency, no longer require great effort when making the sandwich valve Open valve, and it is safer, more sealing is very practical.
Description of drawings
The small-sized sandwich valve erection drawing of Fig. 1
The large-scale sandwich valve erection drawing of Fig. 2
Fig. 3 is the valve body plan view up and down
Fig. 4 is the valve body sectional view of bowing up and down
Fig. 5 is valve body boss enlarged view up and down
Fig. 6 spool plan view
Fig. 7 spool sectional view
Fig. 8 spool and valve body erection drawing up and down
Fig. 9 leading screw is equipped with female erection drawing
The large-scale sandwich valve spool of Figure 10 hinging pin shaft erection drawing
Figure 11 leading screw is equipped with female plan view
Figure 12 leading screw is equipped with female sectional view
Figure 13 leading screw axle sleeve plan view
Figure 14 leading screw axle sleeve sectional view
The large-scale sandwich valve spool of Figure 15 bearing pin
Valve body among the 1-upper valve body 2-wherein
Valve body under the 3-spool 4-
5-leading screw 6-leading screw is equipped with female
7-positioning dowel 8-leading screw axle sleeve
9-spool bearing pin 10-transmission shaft
11-hydraulic jack 12-connecting plate
The 13-gland
Embodiment
Embodiment. this example is an experimental prototype.Sandwich valve is divided into according to the driving mode difference: screw rod transmission type and hydraulic driven.
This example will be illustrated with sandwich valve with sandwich valve and 813mm bore the 324mm bore respectively by two kinds of sandwich valve forms
The formation of 324mm bore usefulness sandwich valve such as Fig. 2-shown in Figure 15.On the upper valve body 1 of 324mm sandwich valve, following valve body 4 and middle valve body 2 junction planes, set up annular boss, the boss height is 6mm, the boss width is 25mm, by the bolts assemblies sandwich valve, upper valve body 1, middle valve body 2, following valve body 4 and spool 3 are installed to together, during throttle down, the seal ring on the spool 3 will affact upper valve body 1, down on the boss of valve body 4 and form sealing.During Open valve, spool 3 moves the rotation by leading screw 5 to right-hand, is equipped with female 6 to spool 3 and leading screw and contact, and leading screw is equipped with female 6 and screws with the trapezoidal thread of leading screw oversleeve 8 by Tr48 * 3, and with leading screw be equipped with female 6 and leading screw 5 pass through positioning dowel 7 and fix.
The formation of 813mm bore usefulness sandwich valve such as Fig. 2-shown in Figure 15.On the valve body up and down of 813mm sandwich valve, set up annular boss equally, the boss height is that 6mm boss width is 30mm, the spool of this sandwich valve is to stretch by oil hydraulic cylinder to finish open and close, spool 3 is undertaken hinged with transmission shaft 10 by spool bearing pin 9, the diameter of bearing pin is φ 25mm, and length is 130mm.
This two example is through site test, and unsafe factor and the spool relatively requiring great effort when having overcome Open valve, bring because of the leading screw play tilt to cause sealing poor deficiency, and be more laborsaving when making the sandwich valve Open valve, and good seal is safer.
Claims (5)
1. pipe plugging sandwich valve, it comprises upper valve body (1), middle valve body (2), spool (3), following valve body (4), leading screw (5), positioning dowel (7), leading screw axle sleeve (8), transmission shaft (10), hydraulic jack (11), connecting plate (12), be clipped in upper valve body (1), middle valve body (2) between following valve body (4) offsets with spool (3), the leading screw (5) that is connected with spool (3) is connected with transmission shaft (10) by positioning dowel (7) and passes leading screw axle sleeve (8), transmission shaft (10) outer end is connected with the piston rod of two hydraulic jacks (11) by connecting plate (12), it is characterized in that in upper valve body (1), boss is arranged, upper valve body (1) on following valve body (4) and the spool (3), following valve body (4) is on the both sides, circular hole outer that hold spool (3) round ring boss to be arranged respectively; Spool (3) is that round ring boss is arranged outside seal ring; After upper valve body (1), following valve body (4) made up with spool (3), upper valve body (1), the boss of following valve body (4) two inboards and boss, the seal ring of spool (3) tightly forced together.
2. a kind of pipe plugging sandwich valve according to claim 1 is characterized in that overlapping leading screw axle sleeve (8) again after the termination point casing of leading screw (5) is twisted leading screw fully female (6), holds out against with leading screw axle sleeve (8).
3. a kind of pipe plugging sandwich valve according to claim 2 is characterized in that it is that the round nut of laterally wearing screw and tangent plane being arranged at screw two collar extensions is arranged that described leading screw is equipped with female (6).
4. a kind of pipe plugging sandwich valve according to claim 1, insert in the hole of spool (3) end the termination that it is characterized in that transmission shaft (10), and pass spool (3) and transmission shaft (10) in the lump by spool bearing pin (9) in the part that transmission shaft (10) inserts spool (3), make transmission shaft (10) and spool (3) hinged.
5. a kind of pipe plugging sandwich valve according to claim 4 is characterized in that between transmission shaft (10) and spool (3) hole gapped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920105682U CN201391624Y (en) | 2009-02-11 | 2009-02-11 | Pipe plugging sandwich valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920105682U CN201391624Y (en) | 2009-02-11 | 2009-02-11 | Pipe plugging sandwich valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201391624Y true CN201391624Y (en) | 2010-01-27 |
Family
ID=41598449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920105682U Expired - Fee Related CN201391624Y (en) | 2009-02-11 | 2009-02-11 | Pipe plugging sandwich valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201391624Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103216665A (en) * | 2012-01-21 | 2013-07-24 | 飞翼股份有限公司 | Hydraulically controlled throttling valve for transporting filling materials |
| CN103216666A (en) * | 2012-01-21 | 2013-07-24 | 飞翼股份有限公司 | Hydraulically controlled stop valve for transporting filling materials |
| CN104633157A (en) * | 2015-02-27 | 2015-05-20 | 天津绿清管道科技股份有限公司 | Two-piece-type clamping plate valve suitable for pressure tapping and plugging of long-distance pipeline |
| CN105443788A (en) * | 2015-12-18 | 2016-03-30 | 天津卓达管道机械制造有限公司 | Pipeline plugging process valve |
| CN113374881A (en) * | 2021-07-01 | 2021-09-10 | 河南三和水工机械有限公司 | Concrete discharge apparatus |
-
2009
- 2009-02-11 CN CN200920105682U patent/CN201391624Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103216665A (en) * | 2012-01-21 | 2013-07-24 | 飞翼股份有限公司 | Hydraulically controlled throttling valve for transporting filling materials |
| CN103216666A (en) * | 2012-01-21 | 2013-07-24 | 飞翼股份有限公司 | Hydraulically controlled stop valve for transporting filling materials |
| CN103216665B (en) * | 2012-01-21 | 2016-01-06 | 飞翼股份有限公司 | A kind of hydraulic control conveying casting resin throttle valve |
| CN104633157A (en) * | 2015-02-27 | 2015-05-20 | 天津绿清管道科技股份有限公司 | Two-piece-type clamping plate valve suitable for pressure tapping and plugging of long-distance pipeline |
| CN105443788A (en) * | 2015-12-18 | 2016-03-30 | 天津卓达管道机械制造有限公司 | Pipeline plugging process valve |
| CN113374881A (en) * | 2021-07-01 | 2021-09-10 | 河南三和水工机械有限公司 | Concrete discharge apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100127 Termination date: 20160211 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |