CN102865390B - With the assemble method of the T-valve of check valve - Google Patents

Abstract

With a T-valve for check valve, comprising: metal and there is the check valve portion of tubular body; And the T-shaped joint of the metal being welded to connect with side's open end of main body, the tubulose parts of the metal that check valve portion has a valve assembly being housed in main body and the opposing party's open end with main body is welded to connect, valve assembly is configured to have the spool of resin-made, allows the flow of fluid in a direction and limit the flow of fluid of other direction, before tubulose parts and main body are welded to connect, valve assembly can be arranged in main body from the opposing party's open end insertion of main body. Because the part except valve assembly is all the parts of tubulose or T-shaped joint, therefore, overall weight is light, and weld is also two places, can suppress lower by manufacturing cost. After T-shaped joint is welded to connect in main body, valve assembly is housed in main body and avoids the heat impact on spool, can whole height be suppressed lower, do compact.

Description

With the assemble method of the T-valve of check valve

Technical field

The present invention relates to the assemble method of the T-valve with check valve used such as point branch of a kind of air-conditioning circulation.

Background technology

In the past, in the air-conditioning being arranged at the more buildings etc. of room number circulates, there are many points of branches in refrigerant flow path, in order to be switched by refrigerant flow path, and employs the such as T-valve 21 with check valve as shown in Figure 7.

Should comprising with the T-valve 21 of check valve: main body 22, it is brass system and is formed as T-shaped tubulose; The spool 23 of resin-made, it is housed in main body 22; Copper pipe 24 and copper pipe 25 (weld 24a, 25a), it is connected with main body 22 bottom by welding; And copper pipe 26 (weld 26a, 27a), it is welded to connect the upper opening place in main body 22 by lid body 27. Should with the T-valve 21 of check valve in state shown in Fig. 7, due to the refrigeration agent R of copper pipe 26 inside the thrust pressure of spool 23 is greater than to the thrust pressure of the refrigeration agent R of copper pipe 24,25 inside, therefore, the valve portion 23a of the spool 23 and valve seat 22a of main body 22 is to connecing and closed by valve port 22b, flow system cryogen R between copper pipe 24 and copper pipe 25, refrigeration agent R does not flow to copper pipe 26.

From the state shown in Fig. 7, when in copper pipe 24 and copper pipe 25 pressure of the refrigeration agent R of flowing become high, the refrigeration agent R of copper pipe 24,25 inside the thrust pressure of spool 23 is become bigger than the thrust pressure of the refrigeration agent R of copper pipe 26 inside time, then as shown in Figure 8, spool 23 rises along the inwall 22c of main body 22,23a lift off a seat 22a, valve port 22b in valve portion opens, refrigeration agent R also flows upward in spool 22 inside as shown by the arrows, and refrigeration agent R flows from copper pipe 24 to copper pipe 25 and copper pipe 26.

But, the above-mentioned main body 22 with the T-valve 21 of check valve is the cutting members of brass, and volume is relatively big on the whole and heavier-weight, and weld also has everywhere (24a, 25a, 26a, 27a), therefore there is the problem that manufacturing cost is high.

Therefore, as shown in Figure 9, also consider to make such T-valve 31 with check valve: be used in the check valve that the inside of the main body 32 being made up of copper pipe configures valve assembly 37 and become, main body 32 bottom of this check valve being solder-connected to T-shaped joint 38 (weld 38a) made of copper and makes the T-valve 31 with check valve, this valve assembly 37 comprises: the spool 33 of resin-made; The cylinder shape guiding portion 34 in vertical direction spool 33 led around spool 33; With the valve seat 35a that the valve portion 33a of spool 33 separate; And the sealing element 36 being configured between valve base part 35 and main body 32 inwall.

In the state shown in Fig. 9, should with the T-valve 31 of check valve, the refrigeration agent R of the inside of its main body 32 top 32a is bigger than the thrust pressure of the refrigeration agent R of T-shaped joint 38 inside to the thrust pressure of spool 33, therefore, the valve portion 33a of the spool 33 and valve seat 35a of valve base part 35 to connecing, valve port 32b close, refrigeration agent flows to the direction of arrow shown in solid line in T-shaped joint 38 inside. From the state shown in Fig. 9, when the thrust pressure of spool 33 is become bigger than the thrust pressure of the refrigeration agent R of 32a inside, main body 32 top by the refrigeration agent R of T-shaped joint 38 inside, although the diagram of omission, but spool 33 rises along the inwall 34a in guiding portion 34,33a lift off a seat 35a, valve port 32b in valve portion opens, and refrigeration agent R also flows as the dotted line arrows like that upward in the inside of main body 32.

Should with the T-valve 31 of check valve with shown in Fig. 7 and Fig. 8 with check valve T-valve 21 compared with, lighter in weight on the whole, an also only place, weld, therefore there is the advantage that can reduce manufacturing cost.

Invent problem to be solved

But, the T-valve 31 with check valve of above-mentioned conventional art, it is after being fixed on main body 32 inside by valve assembly 37, when the bottom of main body 32 being solder-connected to T-shaped joint 38 made of copper at weld 38a, in order to avoid the heat impact of the spool 33 on resin-made, it is necessary to lengthen the distance L between weld 38a and spool 33. Therefore, maximize with T-valve 31 entirety of check valve, there is the problem that can not carry out in limited space arranging.

Summary of the invention

Therefore, the present invention makes in view of the problem in the T-valve with check valve of above-mentioned conventional art, its object is to the assemble method of the T-valve with check valve that provide a kind of overall weight lighter and compact, low cost of manufacture.

For achieving the above object, the present invention with, in the assemble method of the T-valve of check valve, the described T-valve with check valve comprises: the main body of the tubulose of metal, the valve assembly of the spool with resin-made being housed in described main body, with the T-shaped joint of the metal that the open end of a side of described main body is welded to connect, and the tubulose parts of the metal being welded to connect with the open end of the opposing party of described main body, the described assemble method with the T-valve of check valve is characterised in that, described valve assembly is being assembled into the stage before described main body, the open end of T-shaped joint and a side of described main body is welded to connect, then, the described valve assembly with described resin-made spool is inserted into described main body from the open end of the opposing party of described main body, finally, described tubulose parts are inserted from the open end of the opposing party of described main body, and described tubulose parts and described main body are welded to connect.

Adopt the present invention, owing to the part except valve assembly is all made up of the parts of tubulose or T-shaped joint, therefore the T-valve with check valve that overall weight can be provided light, owing to weld also only has two places, therefore can the manufacturing cost of the T-valve with check valve be suppressed lower.In addition, after T-shaped joint is welded to connect in main body, the heat impact on spool can be avoided by valve assembly is contained in main body, therefore can the whole height of the T-valve with check valve be suppressed lower, can do compact, the T-valve with check valve that narrow space also can carry out arranging can be manufactured on.

In addition, the present invention with, in the assemble method of the T-valve of check valve, the described T-valve with check valve comprises: the main body of the tubulose of metal, the valve assembly of the spool with resin-made being housed in described main body, and the T-shaped joint of the metal being welded to connect with the open end of a side of described main body, the described assemble method with the T-valve of check valve is characterised in that, described valve assembly is being assembled into the stage before described main body, the open end of T-shaped joint and a side of described main body is welded to connect, then, the described valve assembly with described resin-made spool is inserted into described main body from the open end of the opposing party of described main body, open end the opposing party of described main body implements stretch process, the position carrying out described valve assembly is fixed.

Adopt the present invention, identical with foregoing invention, a kind of T-valve with check valve that overall weight is light, can suppress lower by the whole height of the T-valve with check valve, can do compact, also can carry out arranging in narrow space can be manufactured, and, owing to weld is a place, therefore, the manufacturing cost of the T-valve with check valve can be reduced further.

Invention effect:

As mentioned above, it is necessary, employing the present invention, can manufacture overall weight light and compact, the T-valve with check valve of low cost of manufacture.

Accompanying drawing explanation

Fig. 1 is the figure of an enforcement mode of the T-valve with check valve representing the present invention, and Fig. 1 (a) is front view, and Fig. 1 (b) is vertical view, and Fig. 1 (c) is upward view.

Fig. 2 (a) is the side-view of the T-valve with check valve of Fig. 1, and Fig. 2 (b) is the sectional view of line A-A along Fig. 1.

Fig. 3 is the sectional view of line B-B along Fig. 1.

Fig. 4 is the figure of the spool rising state representing the T-valve with check valve shown in Fig. 3.

Fig. 5 is the figure of an enforcement mode again of the T-valve with check valve representing the present invention, and Fig. 5 (a) is front view, and Fig. 5 (b) is vertical view, and Fig. 5 (c) is upward view.

Fig. 6 is the sectional view of line C-C along Fig. 5.

Fig. 7 is the sectional view of an example of the T-valve with check valve representing conventional art.

Fig. 8 is the figure of the spool rising state representing the T-valve with check valve shown in Fig. 7.

Fig. 9 is the sectional view of an example again of the T-valve with check valve representing conventional art.

Nomenclature:

1 with the T-valve of check valve

2 main bodys

2a valve port

3 spools

3a valve portion

3b foliated lamellar portion

3c cylindrical portion

4 guiding portions

4a inwall

5 valve base parts

5a valve seat

6 sealing elements

7 valve assemblies

8T font joint

8a weld

9 bronze medal pipes

9a weld

10 check valve portions

11 with the T-valve of check valve

12 main bodys

12a large-diameter portion

12b minor diameter part

12c tapering

12d valve port

13 spools

13a valve portion

13b foliated lamellar portion

13c cylindrical portion

14 guiding portions

14a inwall

15 valve base parts

15a valve seat

16 sealing elements

17 valve assemblies

18T font joint

18a weld

20 check valve portions

Embodiment

Below, the enforcement mode implementing the present invention is described in detail with reference to accompanying drawing.

Fig. 1 to Fig. 4 represents an enforcement mode of the T-valve with check valve of the present invention. Should comprising with the T-valve 1 of check valve: check valve portion 10, it is metal and the main body with tubulose 2; And the T-shaped joint 8 (weld 8a) of the metal being welded to connect with main body 2 bottom. Check valve portion 10 configures valve assembly 7 in the inside of the main body 2 being made up of copper pipe, and the rising wood in main body 2 has been welded to connect copper pipe 9 (weld 9a), and this valve assembly 7 comprises: the spool 3 of resin-made; Around the guiding portion 4 of the cylinder shape that spool 3 is led by spool 3 in vertical direction; There is the valve base part 5 of valve seat 5a that the valve portion 3a with spool 3 contacts, is separated; And the sealing element 6 being configured between valve base part 5 and main body 2 inwall.

The bottom of spool 3 has valve portion 3a, and express such as Fig. 1 (b), four foliated lamellar portion 3b are connected with cylindrical portion 3c, by the valve seat 5a of valve portion 3a and valve base part 5 to connecing and the valve port 2a of main body 2 is closed, when valve portion 3a lifts off a seat 5a, the space of refrigeration agent R through between the adjacent foliated lamellar portion 3b of spool 3 and can pass through in the inside of main body 2.

The T-valve 1 with check valve having said structure to assemble, first, when not accommodating valve assembly 7 and copper pipe 9 in main body 2 inside, is welded to connect on the bottom of main body 2 by T-shaped joint 8. Now, owing to main body 2 inside does not exist the spool 3 of poor heat resistance, therefore, it is not necessary to consider the heat impact on spool 3 produced because of the welding of T-shaped joint 8.

Then, valve assembly 7 and copper pipe 9 being housed in from the upper opening insertion of main body 2 by this order the inside of main body 2, copper pipe 9 (weld 9a) is welded and fixed by the rising wood in main body 2. When carrying out this welding, from the outside of main body 2, the part of valve assembly 7 is cooled, owing to not requiring the welded joint lengthening the whole total length in the insertion region of weld 9a to the distance L of spool 3 and copper pipe 9, the heat impact that spool 3 is subject to producing therefore can be avoided because of welding.

When shown in Fig. 2 and Fig. 3, should with in the T-valve 1 of check valve, owing to the refrigeration agent R of copper pipe 9 inside is bigger to the thrust pressure of spool 3 than the refrigeration agent R of T-shaped joint 8 inside to the thrust pressure of spool 3, therefore, valve seat 5a, valve port 2a that the valve portion 3a of spool 3 is connected to valve base part 5 are closed, and refrigeration agent R flows to the direction of arrow or the direction contrary with arrow in the inside of T-shaped joint 8.

From the state shown in Fig. 2 and Fig. 3, when the refrigeration agent R of T-shaped joint 8 inside the thrust pressure of spool 3 become than the refrigeration agent R of copper pipe 9 inside to the thrust pressure of spool 3 big time, as shown in Figure 4, spool 3 rises along the inwall 4a in guiding portion 4,3a lift off a seat 5a, valve port 2a in valve portion opens, the space of refrigeration agent R between four foliated lamellar portion 3b and also flow upward in the inside of main body 2 as shown by the arrows.

As mentioned above, owing to the part except valve assembly 7 of the above-mentioned T-valve 1 with check valve is all made up of copper pipe (main body) 2,9 or T-shaped joint 8 made of copper, therefore, overall weight is light, weld is also two places, therefore, can suppress lower by manufacturing cost, by suppressing the whole height of the T-valve 1 with check valve lower just can do compact, also can arrange in narrow space.

Then, an enforcement mode again of the T-valve with check valve of the present invention is described with reference to Fig. 5 and Fig. 6.

Should comprising with the T-valve 11 of check valve: check valve portion 20, it is metal and the main body with tubulose 12; And the T-shaped joint 18 of metal, itself and main body 12 bottom are welded to connect. The inside of the main body 12 being made up of copper pipe in check valve portion 20 is configured with valve assembly 17, and this valve assembly 17 comprises: the spool 13 of resin-made; Around the guiding portion 14 of the cylinder shape that spool 13 is led by spool 13 on lead hangs down direction; There is the valve base part 15 of valve seat 15a that the valve portion 13a with spool 13 contacts, is separated; And the sealing element 16 being configured between valve base part 15 and main body 12 inwall.

Main body 12 comprises: the large-diameter portion 12a of collecting valve assembly 17; The minor diameter part 12b on top; And the tapering 12c between large-diameter portion 12a and minor diameter part 12b.

Spool 13 has the structure identical with the spool 3 in above-mentioned 1st enforcement mode, bottom has valve portion 13a, and, as Fig. 5 (b) expresses, four foliated lamellar portion 13b are connected with cylindrical portion 13c, by the valve seat 15a of valve portion 13a and valve base part 15 to connecing and the valve port 12d of main body 12 is closed, when valve portion 13a lifts off a seat 15a, the space of refrigeration agent R between the adjacent foliated lamellar portion 13b of spool 13 and can pass through in the inside of main body 12.

The T-valve 11 with check valve having said structure to assemble, first, is welded to T-shaped joint 18 (weld 18a) by the bottom of the main body 12 of the only bottom identical with large-diameter portion 12a of diameter on the whole undergauge. Now, owing to there is not the spool 13 of poor heat resistance in main body 12 inside, therefore, it is not necessary to consider the heat impact on spool 13 produced because of the welding of T-shaped joint 18.

Then, from the upper opening of main body 12, valve assembly 17 is housed in the inside of main body 12. As mentioned above, it is necessary, owing to being main body 12 with large-diameter portion 12a same diameter on the whole, therefore valve assembly 17 can be inserted from upper opening. Then, carry out stretch process and form tapering 12c and minor diameter part 12b by making the top of main body 12 rotate, valve assembly 17 is fixed on the position shown in Fig. 6. So, in the present embodiment, owing to omitting the welding of above-mentioned 1st enforcement mode, therefore, with an only position, the weld needed for the assembling of the T-valve 1 of check valve, manufacturing cost can be reduced further.

When shown in Fig. 6, should with in the T-valve 11 of check valve, due to the minor diameter part 12b of its main body 12 and refrigeration agent R of 12c inside, tapering the thrust pressure of spool 13 is greater than the thrust pressure of the refrigeration agent R of T-shaped joint 18 inside, therefore, the valve seat 15a that the valve portion 13a of spool 13 abuts to valve base part 15 to connecing, valve port 12d close, refrigeration agent R flows to the direction of arrow or the direction contrary with arrow in the inside of T-shaped joint 18.

From the state shown in Fig. 6, when the refrigeration agent R of T-shaped joint 18 inside the thrust pressure of spool 13 become than the refrigeration agent R of the minor diameter part 12b of main body 12 and 12c inside, tapering to the thrust pressure of spool 13 big time, although diagram is omitted, but spool 13 rises along the inwall 14a in guiding portion 14,13a lift off a seat 15a, valve port 12d in valve portion opens, and the space of refrigeration agent R between four foliated lamellar portion 13b is above the inside of main body 12 also flows to.

As mentioned above, the part except valve assembly 17 of the above-mentioned T-valve 11 with check valve is all made up of copper pipe (main body) 12 or T-shaped joint 18 made of copper, therefore, overall weight is light, weld is also a position, therefore can further manufacturing cost be suppressed lower, by T-valve 11 whole height with check valve is suppressed lower and do compact, also can arrange in narrow space.

In addition, in the above-described embodiment, although main body 2,12, T-shaped joint 8,18 etc. is copper, but also can use the parts that other metal is formed. In addition, valve assembly 7,17 is also not limited to said structure, as long as have the spool of resin-made, allow the flow of fluid in a direction and limit the one-way valve structures of the flow of fluid of other direction, so that it may adopt.

Claims (2)

1., with the assemble method of T-valve for check valve, the described T-valve with check valve comprises: the main body of the tubulose of metal; The valve assembly of the spool with resin-made being housed in described main body; With the T-shaped joint of the metal that the open end of a side of described main body is welded to connect; And the tubulose parts of the metal being welded to connect with the open end of the opposing party of described main body, the described assemble method with the T-valve of check valve is characterised in that,

Described valve assembly is being assembled into the stage before described main body, the open end of T-shaped joint and a side of described main body is being welded to connect,

Then, the described valve assembly with described resin-made spool is inserted into described main body from the open end of the opposing party of described main body,

Finally, insert described tubulose parts from the open end of the opposing party of described main body, and described tubulose parts and described main body are welded to connect.

2., with the assemble method of T-valve for check valve, the described T-valve with check valve comprises: the main body of the tubulose of metal; The valve assembly of the spool with resin-made being housed in described main body; And the T-shaped joint of the metal being welded to connect with the open end of a side of described main body, the described assemble method with the T-valve of check valve is characterised in that,

Described valve assembly is being assembled into the stage before described main body, the open end of T-shaped joint and a side of described main body is being welded to connect,

Then, the described valve assembly with described resin-made spool is inserted into described main body from the open end of the opposing party of described main body,

Open end the opposing party of described main body implements stretch process, and the position carrying out described valve assembly is fixed.