CN115560102A

CN115560102A - Multi-way valve, injection agent distribution pry and injection agent distribution system

Info

Publication number: CN115560102A
Application number: CN202211386217.1A
Authority: CN
Inventors: 林忠灿; 温智慧; 陈龙龙; 陈云峰; 林辰厚; 张英英; 王萌; 颜亚萍
Original assignee: Shaanxi Aerospace Delin Science And Technology Group Co ltd; Shaanxi Space Pump & Valve Science And Technology Co ltd
Current assignee: Shaanxi Aerospace Delin Science And Technology Group Co ltd; Shaanxi Space Pump & Valve Science And Technology Co ltd
Priority date: 2022-11-07
Filing date: 2022-11-07
Publication date: 2023-01-03

Abstract

The utility model relates to a multi-way valve, an injection agent distribution pry and an injection agent distribution system, wherein the multi-way valve comprises a valve body and a connecting shaft body; the valve body is provided with an inlet flow passage at one axial end in a penetrating way, and at least two outlet flow passages are formed in the side surface; the connecting shaft body is arranged in the containing cavity and is configured to rotate relative to the valve body, a connecting shaft valve channel is arranged inside the connecting shaft body, an inlet of the connecting shaft valve channel is communicated with the inlet flow channel, and an outlet of the connecting shaft valve channel is communicated with any outlet flow channel in the rotating process of the connecting shaft body. When the multi-way valve disclosed by the disclosure is applied to the injection distribution pry, an injection pipeline can be divided into a plurality of injection pipeline branches after being connected to the injection distribution pry and respectively injected into gas production pipelines or well mouths at different gas wells, so that one injection pump can correspond to the gas production pipelines or the well mouths at the plurality of gas wells. Therefore, the arrangement length of the injection pipeline can be effectively reduced, the number of the alcohol injection pumps can be greatly reduced, and the construction cost of the injection distribution system is reduced.

Description

Multi-way valve, injection agent distribution pry and injection agent distribution system

Technical Field

The present disclosure relates to the field of gas production equipment, more precisely to a multi-way valve; the disclosure also relates to an injection agent distribution pry and an injection agent distribution system.

Background

Natural gas is used as clean energy and is applied to various fields of daily life more and more widely, however, in the process of natural gas exploitation, factors such as gas components and pressure easily cause freezing and blocking of an external pipeline or a wellhead on the ground, and particularly, the freezing and blocking can be caused by long-time operation in the exploitation process in a low-temperature environment, so that the safe and stable production of a gas well is seriously influenced.

At present, two modes are generally adopted to prevent freezing blockage in the natural gas exploitation process, the first mode is blockage removal and emptying, the mode can cause resource waste, and the safety and environmental protection risks exist; the second mode is to fill hydrate inhibitors such as methanol, which can effectively reduce the formation amount of natural gas hydrate, thereby preventing the occurrence of freezing and blocking in an external pipeline or at a well mouth.

In the prior art, a one-to-one alcohol injection mode from a station to a wellhead is mostly adopted, and the following problems mainly exist: firstly, the length of the alcohol injection pipeline is far greater than that of the tandem gas production pipeline, so that the alcohol injection pipeline is constructed independently, the investment is high, and the construction period is long; secondly, the number of the needed alcohol injection pumps is large, and the equipment cost is high.

Disclosure of Invention

The present disclosure provides a multi-way valve, an injection agent distribution pry and an injection agent distribution system for solving the problems existing in the prior art.

According to a first aspect of the present disclosure, there is provided a multi-way valve comprising:

the valve body is internally provided with a containing cavity, one axial end of the valve body penetrates through the containing cavity to be provided with an inlet flow passage, and the side surface of the valve body is provided with at least two outlet flow passages;

the connecting shaft body is arranged in the containing cavity and is configured to rotate relative to the valve body, a connecting shaft valve channel is formed in the connecting shaft body, an inlet of the connecting shaft valve channel is communicated with the inlet flow channel, and an outlet of the connecting shaft valve channel is communicated with any outlet flow channel in the rotating process of the connecting shaft body.

In one embodiment of the present disclosure, the inlet of the connecting shaft valve passage is disposed on an axis of the connecting shaft body and is configured to be disposed coaxially with the inlet flow passage.

In an embodiment of the present disclosure, the coupling body includes an inlet shaft and a rotary valve core fixedly connected to each other, an inlet of the coupling valve passage is opened on an end surface of the inlet shaft, and an outlet of the coupling valve passage is opened on a side surface of the rotary valve core.

In an embodiment of the present disclosure, each of the outlet flow passages is a straight line, and included angles between adjacent outlet flow passages are the same.

In one embodiment of the present disclosure, each of the outlet flow passages is located in the same plane perpendicular to the axis of the shaft body.

In one embodiment of the present disclosure, the valve body includes:

the main valve piece is internally provided with a cavity, one axial end of the main valve piece is provided with an inlet shaft hole, the side surface of the main valve piece is provided with at least two outlet end holes, the inlet shaft penetrates out of the inlet shaft hole, and the rotating valve core is arranged in the cavity;

the inlet side valve piece is arranged at the bottom of the main valve piece, and the inlet flow channel is formed in the inlet side valve piece in a penetrating mode;

the outlet side valve members are arranged on the side face of the main valve member, and the outlet flow channel is formed in the main valve member in a penetrating mode.

In an embodiment of the present disclosure, an outlet sealing structure is disposed between each of the outlet-side valve pieces and the shaft body, and the outlet sealing structure is disposed in the outlet port;

the outlet sealing structure comprises an outlet sealing seat and an elastic piece arranged between the outlet sealing seat and the outlet side valve piece, an outlet channel penetrates through the outlet sealing seat, one end of the outlet channel is communicated with the outlet flow channel, and the other end of the outlet channel is constructed to be communicated with an outlet of the connecting shaft valve channel;

the outlet sealing seat is configured to be attached to the rotary valve core under the action of the elastic force of the elastic piece, so that the outlet channel and the outlet of the connecting shaft valve channel are isolated from the accommodating cavity.

In one embodiment of the present disclosure, an inlet sealing structure is disposed between the inlet-side valve element and the coupling body, and the inlet sealing structure is disposed in the inlet shaft hole;

the inlet sealing structure comprises an inlet sealing body and a compression sealing structure, the inlet sealing body is sleeved on the inlet shaft, the outer side of the inlet sealing body is abutted against the main valve piece, and the bottom of the inlet sealing body is abutted against the inlet side valve piece;

the compression sealing structure is arranged between the inlet sealing body and the inlet shaft and comprises an inner sliding ring annularly arranged on the inlet shaft and an outer sealing ring annularly arranged on the outer side of the inner sliding ring; the friction coefficient of the inner sliding ring is smaller than that of the outer sealing ring, one end of the outer sealing ring is abutted with the inlet sealing body, and the other end of the outer sealing ring is abutted with one of the inlet side valve piece and the main valve piece.

In one embodiment of the present disclosure, the inlet sealing structure is provided with two sets, the outer sealing ring in one set of the inlet sealing structure abuts against the inlet side valve member, and the outer sealing ring in the other set of the inlet sealing structure abuts against the inlet side valve member.

In an embodiment of the disclosure, a fire-proof gasket is disposed between the main valve element and the outlet-side valve element, the fire-proof gasket is disposed at one end of the outlet end hole, which is far away from the outlet sealing structure, and two ends of the fire-proof gasket are respectively attached to the main valve element and the outlet-side valve element, so as to isolate the cavity from the outside.

According to a second aspect of the present disclosure, there is provided an injection agent dispensing lever comprising:

a prying seat;

the multi-way valve is arranged on the prying seat;

the inlet pipeline is arranged on the prying seat and communicated with the inlet runner;

the outlet pipelines are arranged on the prying seat and are respectively communicated with one outlet flow passage;

a controller configured to control the shaft coupling body to rotate so that the outlet of the shaft coupling valve passage is rotated to communicate with one of the outlet flow passages.

In one embodiment of the present disclosure, a pressure detection mechanism is disposed on each of the inlet line and the outlet line, the pressure detection mechanism being configured to acquire the pressure within the inlet line and the outlet line;

the controller is configured to control the connecting shaft body to rotate so as to control the opening degree between the outlet of the connecting shaft valve passage and the outlet flow passage.

In one embodiment of the present disclosure, the controller is configured to control the shaft connecting body to rotate according to a set program or a received control signal, so that the outlet of the shaft connecting valve passage is rotated to be communicated with one outlet flow passage.

According to a third aspect of the present disclosure, there is provided an injectant dispensing system comprising:

the injection agent distribution pry is configured to inject injection agent into a gas production line or a wellhead corresponding to the outlet line;

an injection pump configured to deliver injection from an injection storage device to an inlet line in the injection dispensing sled.

In one embodiment of the present disclosure, the injection system further comprises an injection pipeline, wherein the injection pipeline is in a tree shape and comprises a main injection pipeline connected with the injection distribution lever by an injection pump and a separate injection pipeline connected to a single well or a cluster of wells by the injection distribution lever, and the separate injection pipeline is communicated with the injection pump through the main injection pipeline;

the agent injection pump is arranged on the agent injection pump station, and the agent injection distribution pry is arranged on the agent injection pump station or the gas production field where the single well or the well cluster is located.

When the multi-way valve is applied to the injection agent distribution pry, the injection agent pipeline can be divided into a plurality of injection agent pipeline branches after being connected to the injection agent distribution pry and respectively injected into the external transmission pipelines or well heads at different gas wells, so that one injection agent pump can correspond to the external transmission pipelines or well heads at the gas wells. Therefore, the arrangement length of the injection pipeline can be effectively reduced, the number of the alcohol injection pumps can be greatly reduced, and the construction cost of the injection distribution system is reduced.

Other features of the present disclosure and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the disclosure and together with the description, serve to explain the principles of the disclosure.

FIG. 1 is a schematic perspective view of a multi-way valve provided by an embodiment of the present disclosure;

FIG. 2 is a schematic cross-sectional view of a multi-way valve provided by an embodiment of the present disclosure;

FIG. 3 is a cross-sectional schematic view of an outlet seal arrangement provided by an embodiment of the present disclosure;

FIG. 4 is a schematic cross-sectional view of an inlet seal arrangement provided by an embodiment of the present disclosure;

fig. 5 is a schematic structural view of an injection agent dispensing lever provided by an embodiment of the present disclosure;

FIG. 6 is a schematic diagram of a dispensing system for injectants provided by embodiments of the present disclosure;

the correspondence between the names and reference numerals of the respective components in fig. 1 to 6 is as follows:

1. a multi-way valve; 11. a valve body; 111. an inlet flow channel; 112. an outlet flow passage; 113. a main valve element; 114. an inlet side valve element; 115. an outlet side valve member; 116. an outlet sealing structure; 1161. an outlet seal body; 1162. sealing the seat ring; 1163. an elastic member; 1164. an outlet channel; 1165. a primary seal ring; 1166. a retainer ring; 117. an inlet sealing structure; 1171. an inlet seal body; 1172. an inner slip ring; 1173. an outer sealing ring; 118. a fire resistant gasket; 119. driving the sealing structure; 12. a shaft coupling body; 121. a connecting shaft valve passage; 122. rotating the valve core; 123. an inlet shaft; 124. a drive shaft; 2. injecting agent distributing pry; 21. a prying seat; 22. an inlet line; 23. an outlet line; 24. a controller; 25. a check valve; 26. a pressure detection mechanism; 27. a shut-off valve; 3. an injection pump; 41. a main injection line; 42. dispensing agent lines.

Detailed Description

Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present disclosure unless specifically stated otherwise.

The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the disclosure, its application, or uses.

Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

Specific embodiments of the present disclosure are described below with reference to the accompanying drawings.

In this document, "upper", "lower", "front", "rear", "left", "right", and the like are used only to indicate relative positional relationships between relevant portions, and do not limit absolute positions of the relevant portions.

In this document, "first", "second", and the like are used only for distinguishing one from another, and do not indicate the degree and order of importance, the premise that each other exists, and the like.

In this context, "equal", "same", etc. are not strictly mathematical and/or geometric limitations, but also include tolerances as would be understood by a person skilled in the art and allowed for manufacturing or use, etc.

The present disclosure provides a multi-way valve for use in an injection agent distribution skid for distributing injection agent into an outgoing pipeline or well head.

The disclosed multi-way valve includes a valve body and a coupling shaft body. Wherein, set up the appearance chamber in the valve body, the appearance chamber is used for holding the pivot valve. The axial one end of valve body runs through and has seted up the inlet flow channel, and the inlet flow channel communicates with external notes agent pump, annotates the agent pump and can carry the notes agent in annotating the agent storage facilities to inlet flow channel department. The side surface of the valve body is provided with at least two outlet flow passages, and the inlet flow passage is communicated with an external transmission pipeline or a well mouth at the gas well and used for transmitting the injection into the external transmission pipeline or the well mouth at the gas well.

The connecting shaft body is arranged in the containing cavity and is configured to rotate relative to the valve body, a connecting shaft valve channel is arranged inside the connecting shaft body, an inlet of the connecting shaft valve channel is communicated with the inlet flow channel, and an outlet of the connecting shaft valve channel is communicated with any outlet flow channel in the rotating process of the connecting shaft body.

Therefore, in the working process of the multi-way valve, when the gas production pipe or the wellhead corresponding to any outlet channel needs to be filled with the injection agent, the connecting shaft body can be rotated to enable the outlet of the connecting shaft valve channel to be communicated with the outlet channel, and thus the injection agent can flow to the connecting shaft valve channel from the inlet channel, then flow to the outlet channel from the channel and further flow to the gas production pipe or the wellhead corresponding to the outlet channel.

It can be seen that, in the working process of the multi-way valve, when the gas production line or the wellhead corresponding to any outlet channel needs to be injected with the agent, the connecting shaft body can be rotated to enable the outlet of the connecting shaft valve channel to be communicated with the outlet channel, so that the agent can flow to the connecting shaft valve channel from the inlet channel, then flow to the outlet channel from the channel, and further flow to the gas production line or the wellhead corresponding to the outlet channel. When the multi-way valve is applied to the injection agent distribution pry, the injection agent pipeline can be divided into a plurality of injection agent pipeline branches after being connected to the injection agent distribution pry and respectively injected into the external transmission pipelines or well heads at different gas wells, so that one injection agent pump can correspond to the external transmission pipelines or well heads at the gas wells. Therefore, the arrangement length of the injection pipeline can be effectively reduced, the number of the alcohol injection pumps can be greatly reduced, and the construction cost of the injection distribution system is reduced.

For ease of understanding, the specific structure and operation of the multi-way valve, injection agent distribution lever and injection agent distribution system of the present disclosure will be described in detail below with reference to fig. 1-6 in conjunction with one embodiment.

The utility model provides a multi-way valve 1, this multi-way valve 1 is applied to annotate the agent and distributes sled 2, annotates agent distribution sled 2 and is used for distributing the injection agent in outward transport pipeline or the well head, and specifically, the injection agent can include hydrate inhibitors such as methyl alcohol, ethylene glycol, also can include other functional liquid such as bubble row's agent, pipeline cleaner.

As shown in fig. 1 and 2, the multi-way valve 1 of the present disclosure includes a valve body 11 and a coupling body 12. Wherein, the interior appearance chamber that has been seted up of valve body 11 is used for holding the pivot valve in the appearance chamber. An inlet flow passage 111 penetrates through one axial end of the valve body 11, the inlet flow passage 111 is communicated with an external injection pump 3, and the injection pump 3 can convey injection in the injection storage device to the inlet flow passage 111. At least two outlet flow passages 112 are formed in the side face of the valve body 11, and the inlet flow passage 111 is communicated with an external transmission pipeline or a wellhead of a gas well and used for transmitting injection into the external transmission pipeline or the wellhead of the gas well.

Specifically, as shown in fig. 2, in one embodiment of the present disclosure, the valve body 11 includes a main valve element 113, an inlet-side valve element 114, and at least two outlet-side valve elements 115. The main valve member 113 is provided with a cavity therein, one axial end of the main valve member is provided with an inlet shaft 123 hole, the side surface of the main valve member is provided with at least two outlet end holes, and the inlet side valve member 114 is arranged at the bottom of the main valve member 113 and is internally provided with an inlet flow passage 111 in a penetrating manner; each outlet-side valve element 115 is disposed on a side surface of the main valve element 113, and an outlet flow passage 112 is formed through the inside thereof.

As shown in fig. 1, in an embodiment of the present disclosure, 4 outlet-side valve elements 115 are provided on the valve body 11, and there are 4 corresponding outlet flow passages 112, so that the multi-way valve 1 of the present disclosure can use one inlet to deliver the injection agent to 4 different directions. In another embodiment of the present disclosure, at least 2 outlet-side valve elements 115 are provided on the valve body 11, and the number of the corresponding outlet flow passages 112 is the same as that of the outlet-side valve elements 115.

As shown in fig. 2, the coupling body 12 is disposed in the cavity and configured to rotate relative to the valve body 11, a coupling valve passage 121 is opened inside the coupling body 12, an inlet of the coupling valve passage 121 is configured to communicate with the inlet flow passage 111, and an outlet of the coupling valve passage 121 is configured to communicate with any one of the outlet flow passages 112 during rotation of the coupling body 12.

In this way, in the working process of the multi-way valve 1, when a gas production line or a wellhead corresponding to any outlet channel 112 needs to be injected, the connecting shaft body 12 can be rotated to enable the outlet of the connecting shaft valve channel 121 to be communicated with the outlet channel 112, so that the injected agent can flow from the inlet channel 111 to the connecting shaft valve channel 121, then flow from the channel to the outlet channel 112, and further flow to the gas production line or the wellhead corresponding to the outlet channel 112.

Specifically, in order to ensure that the inlet flow passage 111 can communicate with the inlet of the coupling valve passage 121 during the rotation of the coupling body 12, as shown in fig. 2, in one embodiment of the present disclosure, the inlet of the coupling valve passage 121 is disposed on the axis of the coupling body 12 and is configured to be disposed coaxially with the inlet flow passage 111. Thus, the inlet of the coupling valve passage 121 can be always aligned with the inlet flow passage 111 and maintained in communication during rotation of the coupling body 12.

As shown in fig. 2, in an embodiment of the present disclosure, the coupling body 12 includes an inlet shaft 123 and a rotary valve element 122 fixedly connected to each other, an inlet of the coupling valve passage 121 is disposed on an end surface of the inlet shaft 123, an outlet of the coupling valve passage 121 is disposed on a side surface of the rotary valve element 122, and the outlet passage 112 is disposed on an inner side wall of the cavity, and the outlet passage 112 and the outlet of the coupling valve passage 121 have the same height, so that the outlet of the coupling valve passage 121 can be aligned with any one of the outlet passages 112 in sequence during the rotation of the coupling body 12, so that the coupling valve passage 121 and the outlet passage 112 flow. Further, the opening degree between the outlet of the coupling valve passage 121 and the outlet flow passage 112 can be adjusted during the rotation of the coupling body 12. When the opening between the outlet of the connecting shaft valve passage 121 and the outlet flow passage 112 is the largest, the injection agent flows more smoothly from the connecting shaft valve passage 121 to the outlet flow passage 112, and the flow rate is the largest; when the opening between the outlet of the connecting valve passage 121 and the outlet flow passage 112 is decreased, the flow of the injection agent from the connecting valve passage 121 to the outlet flow passage 112 is also blocked, and the flow rate is decreased.

As shown in fig. 2, in one embodiment of the present disclosure, the outer profile of the rotary valve core 122 is spherical, and in other embodiments, the outer profile of the rotary valve core 122 may be cylindrical or other shapes.

In one embodiment of the present disclosure, each outlet flow passage 112 is straight, and the included angle between adjacent outlet flow passages 112 is the same, so that the rotation angle of the connecting shaft body 12 is the same during the process of rotating the outlet of the connecting shaft valve passage 121 from the current outlet flow passage 112 to the next outlet flow passage 112.

In one embodiment of the present disclosure, each outlet flow passage 112 is located in the same plane perpendicular to the axis of the coupling body 12, i.e., each outlet flow passage 112 is located in the same horizontal plane when the coupling body 12 extends in the vertical direction. In this way, the length of the outlet flow passage 112 can be effectively saved, and the arrangement of the respective outlet-side valve members 115 can be facilitated.

For the purpose of driving the coupling body 12 to rotate, as shown in fig. 2, in an embodiment of the present disclosure, a driving shaft 124 is further fixedly disposed at the other end of the rotary valve core 122 away from the inlet shaft 123, and the driving shaft 124 is coaxial with the inlet shaft 123; the main valve member 113 has a drive shaft 124 opening at the other axial end thereof with respect to the inlet shaft 123 opening, and the drive shaft 124 extends through the drive shaft 124 opening. The multi-way valve 1 of the present disclosure further includes a driving mechanism (not shown in the drawings), which can drive the driving shaft 124 to rotate, so as to drive the connecting shaft body 12 to rotate, so that the outlet of the connecting shaft valve passage 121 is rotated to be communicated with one outlet flow passage 112.

It can be seen that, in the working process of the multi-way valve 1, when a gas production line or a well mouth corresponding to any one of the outlet flow channels 112 needs to be injected with an injection agent, the connecting shaft body 12 can be rotated to enable the outlet of the connecting shaft valve channel 121 to be communicated with the outlet flow channel 112, so that the injection agent can flow from the inlet flow channel 111 to the connecting shaft valve channel 121, then flow from the flow channel to the outlet flow channel 112, and further flow to the gas production line or the well mouth corresponding to the outlet flow channel 112. When the multi-way valve 1 disclosed by the disclosure is applied to the injection distribution pry 2, an injection pipeline can be divided into a plurality of injection pipeline branches after being connected to the injection distribution pry 2, and the injection pipelines are respectively injected into the external transmission pipelines or well mouths of different gas wells, so that one injection pump 3 can correspond to the external transmission pipelines or well mouths of the gas wells. Therefore, the arrangement length of the injection pipeline can be effectively reduced, the number of the alcohol injection pumps can be greatly reduced, and the construction cost of the injection distribution system is reduced.

In order to avoid the leakage of the injection agent between the shaft body 12 and the outlet-side valve member 115, as shown in fig. 2 and 3, in one embodiment of the present disclosure, an outlet sealing structure 116 is disposed between each of the outlet-side valve member 115 and the shaft body 12, and the outlet sealing structure 116 is disposed in the outlet port;

the outlet sealing structure 116 includes an outlet sealing seat and an elastic member 1163 disposed between the outlet sealing seat and the outlet-side valve element 115, an outlet passage 1164 is formed through the outlet sealing seat, one end of the outlet passage 1164 is communicated with the outlet flow passage 112, and the other end of the outlet passage 1164 can be used for being communicated with an outlet of the connecting shaft valve passage 121; the outlet sealing seat can be attached to the rotary valve element 122 under the elastic force of the elastic element 1163, so as to isolate the outlet passage 1164 and the outlet of the connecting shaft valve passage 121 from the accommodating cavity. The elastic member 1163 may be a disc spring or other kinds of springs.

In the working process of the multi-way valve 1, the elastic piece 1163 can provide elastic force for the outlet sealing seat, so that the outlet sealing seat is tightly attached to the connecting shaft body 12, the outlet side valve piece 115 is connected with the connecting shaft body 12 in a sealing mode, the situation that liquid mixing occurs between the outlet channels 1164 or the connecting shaft valve channel 121 is avoided, the situation that liquid mixing occurs between the outlet channels 1164 is avoided, and in addition, the temporary isolation effect can be achieved when the situation that fire occurs in the cavity through flammable injection agents such as methanol and ethylene glycol.

Further, as shown in fig. 3, in an embodiment of the present disclosure, the outlet sealing seat includes an outlet sealing body 1161 and a sealing seat ring 1162 disposed on the outlet sealing body 1161, the sealing seat ring 1162 is disposed at an end of the outlet sealing body 1161 close to the rotary valve element 122 and is configured to be attached to the rotary valve element 122, and the outlet sealing body 1161 is configured to be attached to the rotary valve element 122 in case of failure of the sealing seat ring 1162.

In the normal use process of the multi-way valve 1, the seal seat ring 1162 can be attached to the rotary valve element 122, so that the outlet side valve element 115 is connected with the connecting shaft body 12 in a sealing mode, when a fire accident occurs in a cavity of flammable injection agents such as methanol and ethylene glycol, and the seal seat ring 1162 is burnt out and fails, the elastic piece 1163 can provide elastic force for the outlet sealing body 1161, so that the outlet sealing body 1161 is attached to the rotary valve element 122, further leakage of the injection agents is avoided, and expansion of the fire disaster is restrained.

Specifically, the sealing seat ring 1162 may be made of a polymer material such as nylon, plastic, etc., and the sealing seat may be made of a metal material. By making the sealing seat ring 1162 from a polymer material such as nylon, plastic, etc., the sealing seat ring 1162 can be attached to the rotary valve core 122 more tightly, so as to ensure the sealing connection between the sealing seat ring 1162 and the rotary valve core 122 during the rotation process, and reduce the friction between the sealing seat ring 1162 and the rotary valve core 122.

To enable the seal ring 1162 or the outlet seal body 1161 to conform to the rotary valve spool 122, as shown in fig. 3, in one embodiment of the present disclosure, the seal ring 1162 and the outlet seal body 1161 are shaped to match the shape of the rotary valve spool 122. When the rotary spool 122 is spherical, the side edges of the seal retainer 1162 and the outlet seal 1161 are spherical or beveled to match each other.

In order to avoid the leakage of the injection agent at the position of the elastic element 1163, as shown in fig. 3, in an embodiment of the present disclosure, the elastic element 1163 is disposed at an end surface of the outlet sealing body 1161 away from the rotary valve element 122, an annular accommodating groove is formed on an outer annular surface of the outlet sealing body 1161, the outlet sealing structure 116 further includes a main sealing ring 1165 disposed in the annular accommodating groove, and the main sealing ring 1165 is attached to the outlet sealing body 1161 and the outlet-side valve element 115, so as to isolate the outlet passage 1164 and the outlet flow passage 112 from the accommodating cavity.

Through setting up main sealing washer 1165, can be effectively sealed between all laminating with outlet seal 1161, outlet side valve member 115 to all isolated mutually with the appearance chamber with export passageway 1164 and export runner 112, avoid the position at elastic component 1163 to appear annotating the condition emergence that the agent was revealed.

In order to prevent the main sealing ring 1165 from being squeezed into the gap between the outlet sealing body 1161 and the outlet side valve element 115, as shown in fig. 3, the outlet sealing structure 116 further includes a retaining ring 1166 disposed in the annular receiving groove, the retaining ring 1166 is disposed on a side of the main sealing ring 1165 close to the rotary valve element 122, a height of the retaining ring 1166 is higher than a depth of the annular receiving groove, two ends of the retaining ring 1166 are respectively abutted to the outlet side valve element 115 and the outlet sealing body 1, and by disposing the retaining ring 1166 on a side of the main sealing ring 1165 close to the rotary valve element 122, the main sealing ring 1165 can be effectively prevented from being squeezed into the gap between the outlet sealing body 1161 and the outlet side valve element 115 under the condition of too high pressure, so that the sealing failure occurs.

In order to avoid the leakage of the injection agent between the inlet side valve element 114 and the connecting shaft body 12 and ensure that the connecting shaft body 12 can rotate smoothly, as shown in fig. 2 and 4, in one embodiment of the present disclosure, an inlet sealing structure 117 is arranged between the inlet side valve element 114 and the connecting shaft body 12, and the inlet sealing structure 117 is arranged in the inlet shaft hole; the inlet sealing structure 117 comprises an inlet sealing body 1171 and a pressing sealing structure, wherein the inlet sealing body 1171 is sleeved on the inlet shaft 123, the outer side of the inlet sealing body is abutted against the main valve element 113, and the bottom of the inlet sealing body is abutted against the inlet side valve element 114;

the compressing and sealing structure is arranged between the inlet sealing body 1171 and the inlet shaft 123 and comprises an inner sliding ring 1172 annularly arranged on the inlet shaft 123 and an outer sealing ring 1173 annularly arranged on the outer side of the inner sliding ring 1172; the inner slide ring 1172 has a friction coefficient smaller than that of the outer seal ring 1173, and one end of the outer seal ring 1173 abuts against the inlet seal body 1171 and the other end abuts against one of the inlet side valve element 114 and the main valve element 113.

Because the friction coefficient of the inner sliding ring 1172 is smaller than that of the outer sealing ring 1173, the inner sliding ring 1172 is annularly arranged on the inlet shaft 123, and the friction force applied to the shaft coupling body 12 in the rotating process is small, so that the required rotating torque of the shaft coupling body 12 is reduced, and the requirement on a driving mechanism is reduced. The outer sealing ring 1173 can abut the inlet sealing body 1171 against one of the inlet side valve element 114 and the main valve element 113, so that the inlet sealing body 1171 is connected with one of the inlet side valve element 114 and the main valve element 113 in a sealing manner, and the injection agent leakage between the inlet side valve element 114 and the connecting shaft body 12 is avoided.

As shown in fig. 3, in one embodiment of the present disclosure, the inlet seal structures 117 are provided in two sets, the outer seal ring 1173 of one set of inlet seal structures 117 abuts against the inlet side valve member 114, the outer seal ring 1173 of the other set of inlet seal structures 117 abuts against the main valve member 113, and both inner slip rings 1172 can reduce the friction force on the shaft body 12 during rotation. One of the outer sealing rings 1173 can abut against the inlet sealing body 1171 and the inlet side valve element 114, so that the inlet sealing body 1171 and the inlet side valve element 114 are connected in a sealing mode, the other outer sealing ring can abut against the inlet sealing body 1171 and the main valve element 113, so that the inlet sealing body 1171 and the main valve element 113 are connected in a sealing mode, and the two outer sealing rings 1173 can further prevent injection leakage between the inlet side valve element 114 and the connecting shaft body 12.

In order to prevent the injection agent in the chamber from leaking to the driving mechanism, as shown in fig. 2, in an embodiment of the present disclosure, a driving sealing structure 119 is disposed between the main valve member 113 and the driving shaft 124, and the driving sealing structure 119 is disposed in the driving shaft hole and configured to isolate the chamber from the outside, so that the injection agent in the chamber can be prevented from leaking to the driving mechanism.

Further, as shown in fig. 2, in an embodiment of the present disclosure, a fire-proof gasket 118 is disposed between the main valve member 113 and the outlet-side valve member 115, the fire-proof gasket 118 is disposed at one end of the outlet end hole away from the outlet sealing structure 116, and two ends of the fire-proof gasket 118 are respectively attached to the main valve member 113 and the outlet-side valve member 115, so as to isolate the cavity from the outside, so that when a fire breaks out in the cavity, the cavity can be isolated from the outside, and the fire is prevented from spreading to the outside.

As shown in fig. 5, the present disclosure also provides an injection agent distribution skid 2, which is characterized by comprising a skid seat 21, a multi-way valve 1, an inlet pipeline 22, at least two outlet pipelines 23 and a controller 24. The multi-way valve 1, the inlet pipeline 22, the at least two outlet pipelines 23 and the controller 24 are all arranged on the prying seat 21, and the inlet pipeline 22 is communicated with an inlet flow passage 111 in an inlet side valve member 114; each of the outlet lines 23 communicates with an outlet flow passage 112 in an outlet side valve element 115; the controller 24 is configured to control the rotation of the shaft body 12 to rotate the outlet of the shaft connecting valve passage 121 into communication with one of the outlet flow passages 112.

Thus, when a gas production line or a wellhead corresponding to any outlet flow passage 112 needs to be filled with the injection agent, the connecting shaft body 12 can be rotated to enable the outlet of the connecting shaft valve passage 121 to be communicated with the outlet flow passage 112, so that the injection agent can flow from the inlet flow passage 111 to the connecting shaft valve passage 121, then flow from the flow passage to the outlet flow passage 112, and further flow to the gas production line or the wellhead corresponding to the outlet flow passage 112.

It can be seen that inlet pipeline 22 of injection distribution sled 2 of this disclosure can be linked together with an injection pipeline, then each outlet pipeline 23 can be linked together with different injection pipeline branches respectively, thereby make the injection can inject into the export pipeline or well head of different gas well departments respectively, both can effectively reduce the arrangement length of injection pipeline, can reduce the quantity of notes alcohol pump greatly again, reduce the construction cost of injection distribution system.

In one embodiment of the present disclosure, the controller 24 is configured to control the rotation of the shaft connecting body 12 according to a set program or a received control signal, so that the outlet of the shaft connecting valve passage 121 is rotated to be communicated with one outlet flow passage 112. The setting program and the received control signal may include various parameters of the rotation angle, the rotation time, and the stay time of the coupling body 12. Controller 24 can both automatically control injection agent distribution sled 2 to work according to the set program and control injection agent distribution sled 2 to work according to the received remote control signal. Yet, in another embodiment of the present disclosure, the injectate dispensing sled 2 of the present disclosure can also be manually keyed in the field or controlled using a remote control device, as desired.

In order to monitor the operation of the injection dispensing lever 2, as shown in fig. 5, in one embodiment of the present disclosure, a pressure detection mechanism 26 is disposed on each of the inlet line 22 and the outlet line 23, and the pressure detection mechanism 26 is configured to acquire the pressure in the inlet line 22 and the outlet line 23; the controller 24 is configured to control the rotation of the coupling body 12 to control the opening degree between the outlet of the coupling valve passage 121 and the outlet flow passage 112.

According to the pressure in the inlet pipeline 22 and the outlet pipeline 23, the controller 24 can control the connecting shaft body 12 to rotate so as to control the opening degree between the outlet of the connecting shaft valve passage 121 and the outlet flow passage 112, further adjust the actual flow rate of the injection agent from the connecting shaft valve passage 121 to the outlet flow passage 112, and ensure that the injection agent amount conveyed by the injection agent distribution pry 2 can be controlled as required.

As shown in fig. 5, in one embodiment of the present disclosure, a shut-off valve 27 is provided on each of the inlet line 22 and the outlet line 23, and the shut-off valve 27 is provided on the inlet line 22 or the outlet line 23 of the pressure detection mechanism 26 remote from the multi-way valve 1. By providing the shut-off valve 27, the outlet line 23 can be shut off when the outlet line 23 is not in use. .

Because the internal pressure of each export pipeline or well head is different, in order to avoid the oil gas refluence condition that appears when gas production pipeline or well head internal pressure are greater than the multi-ported valve 1 internal pressure, as shown in fig. 5, in an embodiment of this disclosure, on outlet line 23, be provided with check valve 25 between pressure measurement mechanism 26 and the multi-ported valve 1, through setting up check valve 25, can effectively avoid when gas production pipeline or well head internal pressure are greater than the multi-ported valve 1 internal pressure, the condition of oil gas refluence appears, thereby can prevent that the oil gas from flowing to the condition emergence of polluting multi-ported valve 1 in the multi-ported valve 1.

In order to provide the energy required by work for the injection agent distribution pry 2, the injection agent distribution pry 2 provided by the disclosure can be matched with a combined power supply system of solar energy and a storage battery, so that the requirement of injecting the agent in an unattended gas production field in a remote area is met, and the construction cost required by a gas production pipe injection system can be reduced.

In order to ensure that the operator can see the actual position of the shaft connecting body 12 when performing manual operation or performing maintenance, in an embodiment of the present disclosure, a visual type valve position indicator (not shown in the figure) may be disposed on the multi-way valve 1, wherein a position line corresponding to each outlet flow channel 112 is engraved on an observation window of the visual type valve position indicator, and a corresponding indication line is also disposed on the multi-way valve 1, so that the operator can know the actual position of the shaft connecting body 12 by observing the relative position between the indication line and the position line.

As shown in fig. 6, the present disclosure also provides an injection agent distribution system, which at least includes an injection agent distribution lever 2 and an injection agent pump 3, wherein the injection agent distribution lever 2 is configured to inject the injection agent into a gas production line or a wellhead corresponding to the outlet line 23; the injectate pump 3 is configured to deliver injectate within the injectate storage facility to the inlet line 22 within the injectate dispensing skid 2.

Wherein, annotate between agent distribution sled 2 and the notes agent pump 3, gas production line or the well head all through annotating the agent pipeline intercommunication. As shown in fig. 6, in one embodiment of the present disclosure, the injection lines are tree-shaped and include a main injection line 41 connected to the injection distribution lever 2 by the injection pump 3 and a dispensing line 42 connected to Shan Jingxiang by the injection distribution lever 2, and the dispensing line 42 is in communication with the injection pump 3 through the main injection line 41. As shown in fig. 6, in one embodiment of the present disclosure, the injection distribution skids 2 may also be connected in series, i.e., the outlet line of one injection distribution skid 2 is in communication with the next injection distribution skid 2.

In one embodiment of the present disclosure, the injection pump 3 may be disposed in the injection pump station, and the injection distribution lever 2 may be disposed in the injection pump station or the gas production field in which the single well or the well cluster is located, while in another embodiment of the present disclosure, the injection pump 3 and the injection distribution lever 2 may be disposed in the injection pump station or the gas production field in which the single well or the well cluster is located.

It can be seen that in the injection agent distribution system of the present disclosure, the inlet pipeline 22 of the injection agent distribution lever 2 may be communicated with the main injection agent pipeline 41, and then each outlet pipeline 23 may be communicated with a different separate injection agent pipeline 42, so that the injection agents may be injected into the external transportation pipelines or well heads of different gas wells, which not only can effectively reduce the arrangement length of the injection agent pipelines, but also can greatly reduce the number of the injection alcohol pumps, and reduce the construction cost of the injection agent distribution system.

Having described embodiments of the present disclosure, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen in order to best explain the principles of the embodiments, the practical application, or improvements made to the technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein. The scope of the present disclosure is defined by the appended claims.

Claims

1. A multi-way valve, comprising:

the valve comprises a valve body (11), wherein a cavity is formed in the valve body (11), an inlet flow channel (111) is formed in one axial end of the valve body in a penetrating mode, and at least two outlet flow channels (112) are formed in the side face of the valve body;

the connecting shaft body (12) is arranged in the containing cavity and is configured to rotate relative to the valve body (11), a connecting shaft valve channel (121) is formed in the connecting shaft body (12), an inlet of the connecting shaft valve channel (121) is communicated with the inlet flow channel (111), and an outlet of the connecting shaft valve channel (121) is communicated with any outlet flow channel (112) in the rotating process of the connecting shaft body (12).

2. The multi-way valve according to claim 1, wherein the inlet of the connecting shaft valve channel (121) is arranged on the axis of the connecting shaft body (12) and is configured to be arranged coaxially with the inlet channel (111).

3. The multi-way valve according to claim 2, wherein the shaft coupling body (12) comprises an inlet shaft (123) and a rotary valve core (122) which are fixedly connected with each other, an inlet of the shaft coupling valve passage (121) is arranged on an end surface of the inlet shaft (123), and an outlet of the shaft coupling valve passage (121) is arranged on a side surface of the rotary valve core (122).

4. The multi-way valve of claim 3, wherein each of the outlet flow passages (112) is straight and the included angles of adjacent outlet flow passages (112) are the same.

5. The multi-way valve according to claim 4, wherein each of the outlet flow channels (112) lies in the same plane perpendicular to the axis of the shaft body (12).

6. The multi-way valve according to any one of claims 3 to 5, wherein the valve body (11) comprises:

the main valve piece (113) is internally provided with a containing cavity, one axial end of the main valve piece (113) is provided with an inlet shaft hole, the side surface of the main valve piece is provided with at least two outlet end holes, the inlet shaft (123) penetrates out of the inlet shaft hole, and the rotating valve core (122) is arranged in the containing cavity;

the inlet side valve piece (114) is arranged at the bottom of the main valve piece (113), and the inlet flow channel (111) is formed in the inlet side valve piece (114) in a penetrating mode;

the outlet side valve piece (115) is arranged on the side face of the main valve piece (113), and the outlet flow channel (112) is formed in the outlet side valve piece (115) in a penetrating mode.

7. The multi-way valve according to claim 6, wherein an outlet sealing structure (116) is provided between each outlet side valve member (115) and the shaft body (12), the outlet sealing structure (116) being provided in the outlet port;

the outlet sealing structure (116) comprises an outlet sealing seat and an elastic piece (1163) arranged between the outlet sealing seat and the outlet side valve piece (115), an outlet channel (1164) penetrates through the outlet sealing seat, one end of the outlet channel (1164) is communicated with the outlet flow passage (112), and the other end of the outlet channel is configured to be communicated with an outlet of the connecting shaft valve passage (121);

the outlet sealing seat is configured to be attached to the rotary valve core (122) under the elastic force of the elastic piece (1163) so as to isolate the outlet passage (1164) and the outlet of the connecting shaft valve passage (121) from the accommodating cavity.

8. The multi-way valve of claim 6, wherein an inlet seal (117) is disposed between the inlet side valve member (114) and the shaft body (12), the inlet seal (117) being disposed within the inlet shaft bore;

the inlet sealing structure (117) comprises an inlet sealing body (1171) and a pressing sealing structure, the inlet sealing body (1171) is sleeved on the inlet shaft (123), the outer side of the inlet sealing body is abutted against the main valve (113), and the bottom of the inlet sealing body is abutted against the inlet side valve (114);

the compression sealing structure is arranged between the inlet sealing body (1171) and the inlet shaft (123), and comprises an inner sliding ring (1172) annularly arranged on the inlet shaft (123) and an outer sealing ring (1173) annularly arranged on the outer side of the inner sliding ring (1172); the friction coefficient of the inner sliding ring (1172) is smaller than that of the outer sealing ring (1173), one end of the outer sealing ring (1173) abuts against the inlet sealing body (1171), and the other end abuts against one of the inlet side valve member (114) and the main valve member (113).

9. The multi-way valve of claim 8, wherein the inlet seal structures (117) are provided in two sets, an outer seal ring (1173) of one set of the inlet seal structures (117) abutting the inlet side valve member (114) and an outer seal ring (1173) of the other set of the inlet seal structures (117) abutting the main valve member (113).

10. The multi-way valve of claim 7, wherein a fire-proof gasket (118) is arranged between the main valve element (113) and the outlet side valve element (115), the fire-proof gasket (118) is arranged at one end of the outlet end hole, which is far away from the outlet sealing structure (116), and two ends of the fire-proof gasket (118) are respectively attached to the main valve element (113) and the outlet side valve element (115) so as to isolate the cavity from the outside.

11. An injectate dispensing sled, comprising:

a pry seat (21);

the multi-way valve (1) according to any one of claims 1 to 15, the multi-way valve (1) being arranged on the pry seat (21);

the inlet pipeline (22) is arranged on the pry seat (21) and communicated with the inlet flow channel (111);

at least two outlet pipelines (23), wherein each outlet pipeline (23) is arranged on the pry seat (21) and is respectively communicated with one outlet flow channel (112);

a controller (24), the controller (24) configured to control the shaft body (12) to rotate the outlet of the shaft valve passage (121) into communication with one of the outlet flow passages (112).

12. The injection dispensing lever as set forth in claim 11, wherein each of the inlet line (22) and the outlet line (23) is provided with a pressure detection mechanism (26), the pressure detection mechanism (26) being configured to acquire a pressure inside the inlet line (22) and the outlet line (23);

the controller (24) is configured to control the connecting shaft body (12) to rotate so as to control the opening degree between the outlet of the connecting shaft valve passage (121) and the outlet flow passage (112).

13. The injection dispensing lever as set forth in claim 11 or 12, wherein the controller (24) is configured to control the rotation of the shaft body (12) to rotate the outlet of the shaft valve passage (121) into communication with one of the outlet flow passages (112) in accordance with a set program or a received control signal.

14. An injectant dispensing system, comprising:

the injection distribution skid (2) of any of claims 11 to 13, the injection distribution skid (2) being configured to inject injection into a gas production line or wellhead corresponding to the outlet line (23);

an injection pump (3), the injection pump (3) configured to deliver injection within an injection storage device to an inlet line (22) within the injection dispensing sled (2).

15. The injection agent distribution system according to claim 14, further comprising injection agent lines which are tree-shaped and comprise a main injection agent line (41) connected to the injection agent distribution lever (2) by an injection agent pump (3) and a dispensing agent line (42) connected to a single well or cluster by the injection agent distribution lever (2), wherein the dispensing agent line (42) is communicated with the injection agent pump (3) through the main injection agent line (41);

the agent injection pump (3) is arranged on the agent injection pump station, and the agent injection distribution pry (2) is arranged on the agent injection pump station or the gas production field where the single well or the cluster of wells is located.