阅读说明：本技术 调节阀 (Regulating valve ) 是由 庞斌 王炜彬 熊先钺 杨朝博 杨生荣 于 2018-09-13 设计创作，主要内容包括：本发明公开了一种调节阀,属于煤层气开发领域。所述调节阀包括：外壳、阀芯和油嘴座。阀芯包括螺纹段、开槽段和调节段,螺纹段连接在外壳的第一部位的内壁上,开槽段通过油嘴座的第一端嵌入在油嘴座中,油嘴座的第二部位的外壁与外壳的第二部位的内壁连接,外壳的第一部位和第二部位之间设置有流体入口,油嘴座的第二端为流体出口。当旋转阀芯时,可以控制开槽的一部分暴露在流体入口处,使得煤层气从流体入口经过油嘴座之后从流体出口输出。由于开槽是长方形的,因此开槽的宽度是固定的,那么当旋转螺距Δh之后,暴露在流体入口处的开槽的面积的变化是随着Δh的一次方变化的,从而实现对集输管道内的煤层气的流量的精确控制。(The invention discloses a regulating valve, and belongs to the field of coal bed methane development. The regulating valve includes: shell, case and glib seat. The valve core comprises a thread section, a grooving section and an adjusting section, the thread section is connected to the inner wall of the first part of the shell, the grooving section is embedded into the oil nozzle base through the first end of the oil nozzle base, the outer wall of the second part of the oil nozzle base is connected with the inner wall of the second part of the shell, a fluid inlet is formed between the first part and the second part of the shell, and the second end of the oil nozzle base is a fluid outlet. When the valve core is rotated, a part of the groove can be controlled to be exposed at the fluid inlet, so that the coal bed gas passes through the nozzle base from the fluid inlet and then is output from the fluid outlet. Since the slots are rectangular, the width of the slots is fixed, and then after the screw pitch is rotated by deltah, the change of the area of the slots exposed at the fluid inlet is changed along with the first power of deltah, so that the accurate control of the flow of the coal bed gas in the gathering and transportation pipeline is realized.)

1. A regulator valve, comprising: the oil nozzle comprises a shell (1), a valve core (2) and an oil nozzle seat (3);

the valve core (2) comprises a threaded section (21), a slotted section (22) and an adjusting section (23), and the threaded section (21) is connected to the inner wall of the first part of the shell (1);

wherein the grooved section (22) is a portion including a first end of the valve element (2), the adjusting section (23) is a portion including a second end of the valve element (2), the threaded section (21) is located between the grooved section (22) and the adjusting section (23), the diameter of the threaded section (21) is greater than that of the grooved section (22), and the first portion of the housing (1) is a portion including a first end of the housing (1);

the oil nozzle is characterized in that at least one slot (25) is formed in the slot section (22), the slot section (22) is embedded into the oil nozzle base (3) through the first end of the oil nozzle base (3), the outer diameter of the slot section (22) is smaller than the inner diameter of the oil nozzle base (3), the first part of the oil nozzle base (3) is in sealing connection with the slot section (22), the first part of the oil nozzle base (3) is a part comprising the first end of the oil nozzle base (3), each slot in the at least one slot (25) is a rectangular slot, and the long edge of each slot is parallel to the axial direction of the valve core;

the outer wall of the second part of the oil nozzle seat (3) is connected with the inner wall of the second part of the shell (1), a fluid inlet is arranged between the first part of the shell (1) and the second part of the shell (1), the second part of the shell (1) comprises the part of the second end of the shell (1), the second part of the oil nozzle seat (3) comprises the part of the second end of the oil nozzle seat (3), and the second end of the oil nozzle seat (3) is a fluid outlet.

2. The regulating valve according to claim 1, characterized in that it further comprises a cover (4), said cover (4) being provided with an annular dial;

the end cover (4) is connected to the first end of the shell (1), and the adjusting section (23) penetrates through the end cover (4) and the annular dial plate;

and a scale mark is arranged at a first position of the adjusting section (23), and the first position is a position where the adjusting section (23) penetrates through the end cover (4) and the annular dial plate.

3. The regulating valve according to claim 1, characterized in that it further comprises a first sealing ring (5);

and a first sealing ring (5) is arranged between the adjusting section (23) and the inner wall of the first part of the shell (1).

4. The regulating valve according to claim 3, characterized in that the first sealing ring (5) is fixed to the inner wall of the housing (1) by means of a first pressure cap (6).

5. The regulating valve according to claim 1, characterized in that it further comprises a second sealing ring (7);

and the second sealing ring (7) is arranged between the first part of the oil nozzle seat (3) and the slotted section (22).

6. The regulating valve according to claim 5, characterized in that the second sealing ring (7) is fixed at the first location of the nipple seat (3) by means of a second gland (8).

7. The regulating valve according to claim 1, characterized in that it further comprises a connecting head (9);

the inner wall of the first part of the connector (9) is connected with the outer wall of the second part of the oil nozzle seat (3), and the first part of the connector (9) comprises the first end of the connector (9);

the outer wall at the first position of connector (9) with the inner wall at the second position of shell (1) is connected, the second position of shell (1) is for including the position of the second end of shell (1).

8. The regulating valve according to any one of claims 1 to 7, characterized in that said housing (1) is a T-tee housing comprising said first portion, said second portion and a third portion, said first portion comprising a first end and said second portion comprising a second end being two through ports, said third portion comprising a third end being said fluid inlet.

9. The regulating valve according to any of claims 1 to 7, characterized in that the second end of the spool (2) is provided with a regulating head (24).

Technical Field

The invention relates to the field of coal bed gas development, in particular to a regulating valve.

Background

Coal bed gas has been more and more emphasized by people as a new energy source, and after the coal bed gas is extracted from a coal bed gas well, a gathering and transporting pipeline is needed to transport the coal bed gas. In addition, because the reservoir in the coal-bed gas well is sensitive to the pressure of the coal-bed gas, the flow rate of the coal-bed gas transported by the gathering and transportation pipeline needs to be strictly controlled to avoid the rapid change of the pressure of the coal-bed gas in the reservoir. At present, a regulating valve is usually installed at the wellhead of the coal-bed gas well to regulate the flow of the coal-bed gas input into a gathering and transportation pipeline.

Disclosure of Invention

The embodiment of the invention provides a regulating valve which can accurately control the flow in a coal bed gas gathering and transportation pipeline. The technical scheme is as follows:

a regulator valve, comprising: the oil nozzle comprises a shell 1, a valve core 2 and an oil nozzle seat 3;

the valve core 2 comprises a threaded section 21, a slotted section 22 and an adjusting section 23, wherein the threaded section 21 is connected to the inner wall of the first part of the shell 1;

the slotted section 22 is a portion including a first end of the valve element 2, the adjusting section 23 is a portion including a second end of the valve element 2, the threaded section 21 is located between the slotted section 22 and the adjusting section 23, the diameter of the threaded section 21 is greater than that of the slotted section 22, and the first portion of the housing 2 is a portion including a first end of the housing 2;

the oil nozzle is characterized in that the slotted section 22 is provided with at least one slot, the slotted section 22 is embedded in the oil nozzle base 3 through the first end of the oil nozzle base 3, the outer diameter of the slotted section 22 is smaller than the inner diameter of the oil nozzle base 3, the first part of the oil nozzle base 3 is hermetically connected with the slotted section 22, the first part of the oil nozzle base 3 is a part including the first end of the oil nozzle base 3, each slot of the at least one slot 25 is a rectangular slot, and the long side of each slot is parallel to the axial direction of the valve core;

the outer wall of the second part of the oil nozzle seat 3 is connected with the inner wall of the second part of the shell 1, a fluid inlet is arranged between the first part of the shell 1 and the second part of the shell 1, the second part of the shell 1 comprises the second end of the shell 1, the second part of the oil nozzle seat 3 comprises the second end of the oil nozzle seat 3, and the second end of the oil nozzle seat 3 is a fluid outlet.

Optionally, the regulating valve further comprises an end cover 4, and an annular dial is arranged on the end cover 4;

the end cover 4 is connected to the first end of the casing 1, and the adjusting section 23 penetrates through the end cover 4 and the annular dial plate;

a scale mark is arranged at a first position of the adjusting section 23, and the first position is a position where the adjusting section 23 penetrates through the end cover 4 and the annular dial plate.

Optionally, the regulating valve further comprises a first sealing ring 5;

the first sealing ring 5 is arranged between the adjusting section 23 and the inner wall of the first part of the shell 1.

Optionally, the first sealing ring 5 is fixed on the inner wall of the housing 1 by a first pressing cap 6.

Optionally, the regulating valve further comprises a second sealing ring 7;

the second sealing ring 7 is arranged between the first part of the oil nozzle seat 3 and the grooved section 22.

Optionally, the second sealing ring 7 is fixed at the first position of the oil nozzle seat 3 by a second pressing cap 8.

Optionally, the regulating valve further comprises a connector 9;

the inner wall of the first part of the connector 9 is connected with the outer wall of the second part of the oil nozzle seat 3, and the first part of the connector 9 is a part comprising the first end of the connector 9;

the outer wall at the first position of connector 9 with the inner wall at the second position of shell 1 is connected, the second position of shell 1 is for including the position of the second end of shell 1.

Optionally, the housing 1 is a T-shaped three-way housing, the T-shaped three-way housing includes the first portion, the second portion and a third portion, the first end included in the first portion and the second end included in the second portion are two penetrating ports, and the third end included in the third portion is the fluid inlet.

Optionally, an adjusting head 24 is provided on the second end of the valve core 2.

The technical scheme provided by the embodiment of the invention has the following beneficial effects:

in an embodiment of the invention, the regulating valve comprises: the valve comprises a shell, a valve core and a nozzle seat. The valve core comprises a thread section, a grooving section and an adjusting section, wherein the thread section is connected to the inner wall of the first part of the shell. The threaded section is located between the grooving section and the adjusting section, and the diameter of the threaded section is larger than that of the grooving section. The slotted section is provided with at least one slot, each slot in the at least one slot is a rectangular slot, and the long edge of each slot is parallel to the axial direction of the valve core. The first end embedding of fluting section through the glib talker seat is in the glib talker seat, and the external diameter of fluting section is less than the internal diameter of glib talker seat, and sealing connection between the first position of glib talker seat and the fluting section. The outer wall of the second part of the oil nozzle seat is connected with the inner wall of the second part of the shell, a fluid inlet is arranged between the first part of the shell and the second part of the shell, and the second end of the oil nozzle seat is a fluid outlet. Because the threaded section is connected to the inner wall of the shell, when the valve core is rotated through the adjusting section, the valve core can be screwed outwards, so that a part of the groove can be controlled to be exposed at the fluid inlet, and the coal bed gas is output from the fluid outlet after passing through the oil nozzle seat from the fluid inlet. Because the slot is a rectangular slot, the width of the slot is fixed, and after the pitch of the rotating screw is delta h, the change of the area of the slot exposed at the fluid inlet is changed along with the first power of the delta h, so that the accurate control of the flow of the coal bed gas in the gathering and transportation pipeline is realized.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural view of a needle valve provided in the related art;

FIG. 2 is a schematic structural diagram of a regulator valve according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a valve element of a regulator valve according to an embodiment of the present invention;

FIG. 4 is a schematic view of a needle valve in a cross-sectional taper provided in the related art;

fig. 5 is a schematic structural diagram of an end cover of a regulating valve according to an embodiment of the present invention.

Reference numerals:

1: a housing; 2: a valve core; 3: a nipple seat; 4: an end cap; 5: a first seal ring; 6: a first press cap; 7: a second seal ring; 8: a second press cap; 9: a connector; 21: a threaded segment; 22: a grooving section; 23: an adjustment end; 24: an adjustment head; 25: and (4) grooving on the grooving section.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Fig. 2 is a schematic structural diagram of a regulating valve according to an embodiment of the present invention. As shown in fig. 2, the regulating valve includes: the oil nozzle comprises a shell 1, a valve core 2 and an oil nozzle seat 3.

As shown in fig. 3, the valve core 2 includes a threaded section 21, a slotted section 22, and an adjusting section 23, and the threaded section 21 is connected to an inner wall of the first portion of the housing 1. Wherein, the position of fluting section 22 for including the first end of case 2, adjust the position that the section 23 is for including the second end of case 2, and screw section 21 is located between fluting section 22 and the regulation section 23, and the diameter of screw section 21 is greater than the diameter of fluting section 22, and the first position of shell 2 is the position of the first end including shell 2.

The last at least one fluting 25 that is provided with of fluting section 22, the first end embedding that the fluting section 22 passes through glib talker seat 3 is in glib talker seat 3, and the external diameter of fluting section 22 is less than the internal diameter of glib talker seat 3, and sealing connection between the first position of glib talker seat 3 and the fluting section 22, and the first position of glib talker seat 3 is the position including the first end of glib talker seat 3, and every fluting is the rectangle fluting in at least one fluting 25, and the axial direction of every fluting long limit and case 2 is parallel.

The outer wall at the second position of glib talker seat 3 is connected with the inner wall at the second position of shell 1, is provided with fluid inlet between the first position of shell 1 and the second position of shell 1, and the second position of shell 1 is the position of the second end including shell 1, and the second position of glib talker seat 3 is the position of the second end including glib talker seat 3, and the second end of glib talker seat 3 is fluid outlet.

The working principle of the regulating valve provided by the embodiment of the invention is explained as follows:

since the threaded section 21 is connected to the inner wall of the first portion of the housing 1, the valve element 2 can be screwed outward or inward when the valve element 2 is rotated by the adjustment section 23. When the valve core 2 is screwed outwards, a part of the slot 25 can be controlled to be exposed at the fluid inlet, when fluid enters the housing 1 from the fluid inlet of the housing 1, the slot 25 exposed at the fluid inlet can be used as a passage for the fluid to flow into the nozzle seat, and the fluid flows into the nozzle seat 3 through the slot 25 exposed at the fluid inlet and then flows out through the fluid outlet at the second end of the nozzle seat 3. When it is desired to reduce the flow of fluid through the regulator valve, the valve spool 2 is rotated by the regulator segment 23 such that the valve spool 2 is threaded inwardly, thereby reducing the area of the slot 25 that exposes the fluid inlet to reduce the flow of fluid through the regulator valve.

Since each of the at least one slot 25 on the slotted section 22 is rectangular, the width of each slot 25 is a fixed value, and when the distance moved by the valve core 2 in the housing 1 by rotating the valve core 2 is Δ h, the area of the passage of fluid into the nozzle seat 3 varies as the product of the width of each rectangular slot 25, the number of slots 25, and the distance moved by the valve core Δ h. That is, the area of the passage through which the fluid flows into the nozzle holder 3 varies only with the distance Δ h by which the spool 2 moves in the housing 1.

For example, two rectangular slots 25 are provided in the slotted section 22, each rectangular slot 25 having a width of 2mm, and when the valve element 2 is rotated such that the valve element 2 moves in the housing 1 by a distance of 2mm, it can be calculated that the change in the area of the passage of the fluid flowing into the nozzle holder 3 is 8mm²。

However, for the needle valve in fig. 1, as shown in fig. 4, it is assumed that the radius of the cone at the tip of the nozzle tip seat of the rotary valve core front is r2, the distance from the apex of the cone to the circular section represented by the radius r2 is h2, the radius of the cone at the tip of the nozzle tip seat after one pitch rotation is r1, the distance from the apex of the cone to the circular section represented by the radius r1 is h1, the pitch of the rotation is Δ h-2-h1., since the taper angle of the cone is 90 degrees, the radius r1 is equal to h1, the radius r2 is equal to h2, and the change of the area of the gap between the nozzle tip seat and the cone after the rotary valve core can be expressed as △ S-pi (r2)²-π(r1)²I.e. pi (h2)²-π(h1)²Since h2 ═ h1+ Δ h, △ S can be converted to pi [ (h 1)+Δh)²-(h1)²]I.e. pi [ h1 Δ h + Δ h²]It can be seen that △ S is quadratic in Δ h after the rotary valve element moves in the housing 1, and therefore when the flow rate of the coal bed gas in the gathering and transportation pipeline is adjusted by the needle valve, △ S changes greatly after the valve element moves Δ h, so that accurate control of the flow rate of the coal bed gas in the transportation pipeline cannot be achieved by the adjusting valve.

For example, in the needle valve, the radius of the cone of the valve body before the valve body is not rotated corresponds to the tip of the nozzle seat is 6mm, the distance from the apex of the cone to the circular cross section represented by the radius 6mm is 6mm, the radius of the cone corresponding to the tip of the nozzle seat is 4mm after the valve body is rotated so that the valve body moves by 2mm, the distance from the apex of the cone to the circular cross section represented by the radius 4mm is 4mm, and the area of the gap between the cone and the nozzle seat after the valve body is rotated is changed from 36 pi to 16 pi to 62.8mm²。

By comparing the change of the channel area of the fluid flowing into the nozzle seat calculated by the delta h when the valve core of the needle valve and the valve core of the regulating valve provided by the invention move for the same time, it can be obviously seen that after the valve core of the needle valve and the valve core of the regulating valve provided by the invention move for 2mm, the difference of the change values of the channel area of the fluid flowing into the nozzle seat in the needle valve and the regulating valve provided by the invention is very obvious, and the regulating valve provided by the invention can more finely control the flow of the fluid.

In addition, the second end of the valve core 2 can be further provided with an adjusting head 24, and an operator can control the screwing-in and screwing-out of the valve core 2 through the adjusting head 24. The adjusting head 24 may have a plurality of structures, in one possible implementation manner, the adjusting head 24 has a tetragonal structure, and the adjusting head 24 may also have other structures, for example, the adjusting head 24 has a hexagonal structure, and the embodiment of the present invention is not limited herein.

In addition, the number of at least one slot 25 on the slotted section 22, the width and length of each slot 25 are determined based on the flow rate of the fluid exiting the regulator valve. Wherein the number and width of the at least one slot 25 determines the flow of fluid in the housing 1 into the nozzle seat 3 when the valve core 2 is screwed out or inThe area of the channel varies. After the width of each slot 25 of the at least one slot 25 and the number of the at least one slot 25 are determined, the length of each slot 25 of the at least one slot 25 determines the maximum area of passage for fluid in the housing 1 to flow through the at least one slot 25 into the nozzle seat 3. For example, if two rectangular slots 25 having a width of 2mm are provided in the slot section 22 and the length of the slot 25 is 30mm, the maximum area of the nozzle base 3 through which the fluid in the housing 1 flows into the slot 25 is 120mm²。

In addition, the regulating valve can also comprise an end cover 4, and an annular dial is arranged on the end cover 4. The end cap 4 is attached to the first end of the housing 1 and the adjustment section 23 passes through the end cap 4 and the annular dial. A graduation mark is arranged at a first position of the adjusting section 23, and the first position is a position where the adjusting section 23 penetrates through the end cover 4 and the annular dial.

By means of the annular dial provided on the end cap 4 and the graduation marks provided at the first position of the adjustment segment 23, the area of the at least one slot 25 exposed at the fluid inlet of the housing 1 can be read directly from the annular dial after rotating the valve cartridge 2.

As shown in fig. 5, the annular dial is provided with score lines, each score line having a corresponding number, and when the valve element 2 is rotated, the score line on the adjustment section 23 will be aligned with a score line on the annular dial, the score line having a corresponding number representing the area of the at least one slot 25 exposed at the fluid inlet of the housing 1. After rotating the valve element 2 again, the graduation marks on the adjustment section 23 will be aligned with another graduation mark on the annular dial, the number corresponding to this graduation mark then representing the area of the at least one slot 25 exposed at the fluid inlet of the housing 1 after rotating the valve element 2. That is, the graduation marks on the adjustment section 23 point from one graduation mark to another on the annular dial, representing the different distances that the rotary valve element 2 moves in the housing 1, and the numbers corresponding to the graduation marks on the annular dial represent the areas of the at least one slot 25 exposed at the fluid inlet. Wherein the numbers corresponding to the scribed lines on the annular dial can be calculated in advance based on the distance the valve element 2 moves in the housing 1 and at least the width and number of each rectangular slot 25 in each slot 25.

For example, the annular dial is engraved with a line dividing 360 degrees 12 of the annular shape equally, the distance between adjacent lines represents the distance the valve element 2 moves in the housing 1, and when the valve element 2 is rotated so that the valve element 2 moves in the housing 1 by 2mm, the graduation marks on the adjustment section 23 are rotated from one line to the other line on the annular dial. Wherein, the slotted section 22 is provided with two rectangular slots 25 with a width of 2mm, when calculating the number corresponding to the scribed line on the annular dial, the valve core 2 is screwed inwards to make the valve core 2 unable to move in the housing 1, at this time, the number of the scribed line of the graduation line on the adjusting section 23 aligned with the scribed line on the annular dial is set to 0, and the number 0 represents the area of the two rectangular slots 25 exposed at the fluid inlet. When the valve core 2 is screwed outwards, and the moving distance of the valve core 2 in the casing 1 is 2mm, at this time, the scale mark on the adjusting section 23 is aligned with another scale mark on the annular dial plate, and the number corresponding to this scale mark is 8, and the number 8 is calculated according to the product of two 2mm rectangular slots 25 of the slot section 22 and the moving distance of the valve core 2 in the casing 1 of 2mm, which represents that the area of the two rectangular slots 25 exposed at the fluid inlet is 8mm at this time²And by analogy, numbers which are calculated in advance and represent the areas of the two rectangular grooves 25 exposed at the fluid inlet are arranged at other marked lines on the annular dial plate, and after the thread section 21 is rotated, the numerical values of the areas of the two rectangular grooves 25 exposed at the fluid inlet can be known only by reading out the numbers corresponding to the marked lines on the annular dial plate when the scale marks on the adjusting section 23 are aligned with the marked lines on the annular dial plate.

Of course, the annular dial may also be in other forms, for example, numbers corresponding to the scribed lines on the annular dial represent the opening degree of the regulating valve, and the invention is not limited herein.

The connection between the end cap 4 and the first end of the housing 1 may be a threaded connection, or may be other connections, such as a welded connection or a snap connection, which is not limited herein.

In addition, as shown in fig. 2, when fluid flows into the housing 1 through the fluid inlet of the housing 1, if the threaded section 21 of the valve element 2 is not tightly connected to the inner wall of the first portion of the housing 1, the fluid may leak from the connection between the threaded section 21 and the inner wall of the housing 1, and therefore, the regulating valve further includes a first sealing ring 5, and the first sealing ring 5 is disposed between the regulating section 23 and the inner wall of the first portion of the housing 1, so as to prevent the fluid leaking from the connection between the threaded section 21 and the inner wall of the housing 1 from leaking out of the regulating section 23.

Wherein, the first sealing ring 5 is fixed on the inner wall of the shell 1 through a first pressing cap 6. In addition, a trapezoidal groove is formed at a first portion of the housing 1 to prevent the first seal ring 5 from moving along with the movement of the valve element 2 when the valve element 2 is screwed inward. The first sealing ring 5 is fixed on the inner wall of the shell 1 through a first pressing cap 6 and is used for preventing the first sealing ring 5 from moving along with the movement of the valve core 2 when the valve core 2 is screwed outwards.

The first pressing cap 6 can fix the first sealing ring 5 on the housing 1 in the following two ways:

(1) the first pressing cap 6 is provided with a thread at a position contacting with the inner wall of the housing 1, and the first pressing cap 6 is rotated to fix the first sealing ring 5 on the inner wall of the housing 1, so that in the process of rotating the valve core 2, the first pressing cap 6 cannot move due to the movement of the valve core 2, and finally the first sealing ring 5 cannot move along with the movement of the valve core 2.

(2) The outer wall of the first pressure cap 6 is not provided with threads, but the first end of the first pressure cap 6 is in contact with the first sealing ring 5, the second end of the first pressure cap 6 is in contact with the end cover 4, and because the end cover 4 is connected with the first end of the shell 1, the position of the end cover 4 is fixed, in the process of rotating the valve core 2, the first pressure cap 6 is in contact with the end cover 4, the end cover 4 can block the first pressure cap 6 from moving, and the first pressure cap 6 can block the first sealing ring 5 from moving, so that in the moving process of the valve core 2, the first pressure cap 6 can not move along with the movement of the valve core 2, and the first sealing ring 5 can not move along with the movement of the valve core 2.

In the above-described connection mode in which the first gland 6 fixes the first seal ring 5 to the inner wall of the housing 1, the first seal ring 5 is mainly fixed by the first gland 6. Alternatively, in another possible implementation manner, the first pressing cap 6 may not be needed, and the end cap 4 is directly used to fix the first sealing ring 5, that is, the first end of the first sealing ring 5 contacts the trapezoidal groove on the inner wall of the housing 1, and the second end of the first sealing ring 5 contacts the end cap 4, at this time, the first pressing cap 6 may not be needed, and during the movement of the valve element 2, since the end cap 4 is connected with the first end of the housing 1, after the position of the end cap 4 is fixed, the first sealing ring 5 may be blocked by the end cap 4, so that the first sealing ring 5 does not move along with the movement of the valve element 2.

In addition, the regulating valve further comprises a second sealing ring 7, the second sealing ring 7 is arranged between the first part of the oil nozzle base 3 and the slotted section 22, and the second sealing ring 7 is fixed at the first part of the oil nozzle base 3 through a second pressing cap 8. When the second sealing ring 7 is fixed at the first position of the oil nozzle seat 3 through the second pressing cap 8, the valve core 2 is moved through the rotating thread section 21, and in the moving process of the valve core 2, the second sealing ring 7 is fixed at the first position of the oil nozzle seat 3 through the second pressing cap 8, so that the oil nozzle seat 3 and the slotted section 22 are sealed, and therefore it is ensured that fluid can only flow out from the slotted position arranged on the slotted section 22 and cannot flow out from other positions.

The inner wall of the first part of the oil nozzle seat 3 is provided with a trapezoidal groove for preventing the first sealing ring 7 from moving along with the movement of the valve core 2 when the valve core 2 is screwed inwards.

The second pressing cap 8 can fix the second sealing ring 7 on the first portion of the oil nozzle seat 3 in the following two ways:

(1) the outer wall of the first part of the oil nozzle base 3 is provided with threads, the inner wall of the second pressing cap 8 is provided with threads, the first end of the second sealing ring 7 is in contact with the first part of the oil nozzle base 3, the second end of the second sealing ring 7 is in contact with the second pressing cap 8, after the second pressing cap 8 is in threaded connection with the first part of the oil nozzle base 3, the position of the second pressing cap 8 is fixed, therefore, after the valve core 2 is rotated, the second sealing ring 7 can be blocked by the second pressing cap 8, and the second sealing ring 7 can not move along with the movement of the valve core 2.

(2) Still be provided with the screw thread on the inner wall of the first position of glib talker seat 3, be provided with the screw thread on the outer wall of cap 8 is pressed to the second, the first end of second sealing washer 7 contacts with the first position of glib talker seat 3, the second end and the second of second sealing washer 7 press cap 8 to contact, after cap 8 and the first position of glib seat 3 pass through threaded connection is pressed to the second, the position that cap 8 was pressed to the second is fixed, therefore after rotatory case 2, second sealing washer 7 can receive the second and press blocking of cap 8, make second sealing washer 7 can not remove along with the removal of case 2.

In addition, the regulating valve further comprises a connector 9, the inner wall of the first part of the connector 9 is connected with the outer wall of the second part of the oil nozzle base 3, the first part of the connector 9 is a part comprising the first end of the connector 9, the outer wall of the first part of the connector 9 is connected with the inner wall of the second part of the shell 1, and the second part of the shell 1 is a part comprising the second end of the shell 1.

The connection between the inner wall of the first portion of the connection head 9 and the outer wall of the second portion of the nozzle holder 3 may be a threaded connection, and the connection between the inner wall of the first portion of the connection head 9 and the outer wall of the second portion of the nozzle holder 3 may be other types of connections. In field application, the second position of the connector 9 is provided with a thread, and the regulating valve is connected with the gathering and transportation pipeline through the thread arranged at the second position of the connector 9.

It should be noted that, when the regulating valve is used in the field, the connection between the regulating valve and the gathering pipeline can be realized through the connector 9. Alternatively, in another possible embodiment, the connection head 9 may not be provided in the control valve, i.e. the nipple seat 3 is directly connected to the inner wall of the second region of the housing 1. The connection between the outer wall of the nozzle holder 3 and the inner wall of the second portion of the housing 1 may be a snap connection, that is, the outer wall of the nozzle holder 3 and the inner wall of the second portion of the housing 1 are connected by a snap, so that the nozzle holder 3 is fixed on the inner wall of the second portion of the housing 1, and the snap connection is sealed. At this time, the outer wall of the second part of the housing 1 is provided with threads, and the regulating valve is connected with the gathering and transportation pipeline through the threads on the second part of the housing 1.

In addition, the shape of the housing 1 can also have various forms, and in a possible implementation, the housing 1 is a T-shaped three-way housing, the T-shaped three-way housing includes a first portion, a second portion and a third portion, the first portion includes a first end and the second portion includes a second end, the first end and the second end are two through ports, and the third portion includes a third end, which is a fluid inlet.

When the outer shell is a T-shaped three-way outer shell, and the thread section 21 of the valve core 2 is connected with the inner wall of the first part of the T-shaped three-way outer shell, the oil nozzle seat 3 is connected with the inner wall of the second part of the T-shaped three-way outer shell; when the thread section 21 of the valve core 2 is connected with the inner wall of the second part of the T-shaped three-way shell, the oil nozzle seat 3 is connected with the inner wall of the first part of the T-shaped three-way shell. In the process of rotating the valve core 2, fluid enters the T-shaped three-way shell from a fluid inlet at the third position of the T-shaped three-way shell, and flows into the gathering and transportation pipeline after precisely controlling the flow of the fluid through the slotted section 22 of the valve core 2 and the oil nozzle base 3.

In another possible implementation manner, the housing 1 may also be a cross-shaped four-way housing, the cross-shaped four-way housing includes a first portion, a second portion, a third portion, and a fourth portion, the first end included in the first portion and the second end included in the second portion are two through ports, the first end included in the third portion and the second end included in the second portion are two through openings, and the ports of the first portion and the second portion are used as fluid inlets or the ports of the third portion and the fourth portion are used as fluid inlets. When the ports of the first portion and the second portion are used as fluid inlets, a member such as an end cap 4 is attached to the port of the third portion or the fourth portion, the nozzle holder 3 is connected to the inner wall of the portion other than the portion to which the member such as the end cap 4 is attached, among the third portion and the fourth portion, and when the ports of the third portion and the fourth portion are used as fluid inlets, the member such as the end cap 4 is attached to the port of the first portion or the second portion, and the nozzle holder 3 is connected to the inner wall of the portion other than the portion to which the member such as the end cap 4 is attached, among the first portion and the second portion.

In practical application, the regulating valve in the embodiment of the invention is arranged at a wellhead of a coal bed gas well, the flow of the coal bed gas produced in the coal bed gas well is accurately controlled according to actual needs, and the coal bed gas flows into the gathering and transportation pipeline after being controlled by the regulating valve.

In an embodiment of the invention, the regulating valve comprises: the valve comprises a shell, a valve core and a nozzle seat. The valve core comprises a thread section, a grooving section and an adjusting section, wherein the thread section is connected to the inner wall of the first part of the shell. The threaded section is located between the grooving section and the adjusting section, and the diameter of the threaded section is larger than that of the grooving section. The slotted section is provided with at least one slot, each slot in the at least one slot is a rectangular slot, and the long edge of each slot is parallel to the axial direction of the valve core. The first end embedding of fluting section through the glib talker seat is in the glib talker seat, and the external diameter of fluting section is less than the internal diameter of glib talker seat, and sealing connection between the first position of glib talker seat and the fluting section. The outer wall of the second part of the oil nozzle seat is connected with the inner wall of the second part of the shell, a fluid inlet is arranged between the first part of the shell and the second part of the shell, and the second end of the oil nozzle seat is a fluid outlet. Because the threaded section is connected to the inner wall of the shell, when the valve core is rotated through the adjusting section, the valve core can be screwed outwards, so that a part of the groove can be controlled to be exposed at the fluid inlet, and the coal bed gas is output from the fluid outlet after passing through the oil nozzle seat from the fluid inlet. Because the slot is a rectangular slot, the width of the slot is fixed, and after the screw pitch is rotated by delta h, the change of the area of the slot exposed at the fluid inlet is changed along with the first power of delta h, so that the accurate control of the flow of the coal bed gas in the gathering and transportation pipeline is realized.

In summary, the present invention is only a preferred embodiment, and not intended to limit the present invention, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.