阅读说明：本技术 除泥砂系统及方法 (Silt removing system and method ) 是由 董传文 王历红 徐立东 方群 王新亚 欧永红 王佩 刘品胜 万金华 于 2019-10-21 设计创作，主要内容包括：本申请公开了一种除泥砂系统及方法,属于流体净化领域。除泥砂系统包括：第一除泥砂组件、第二除泥砂组件和控制器。第一除泥砂组件的出口端与第二除泥砂组件的入口端连通,控制器分别与第一除泥砂组件和第二除泥砂组件电连接,第一除泥砂组件的入口端用于与集输管道的来油端连通,第二除泥砂组件的出口端用于与集输管道的送油端连通。第一除泥砂组件能够过滤第一粒径范围的泥砂,第二除泥砂组件能够过滤第二粒径范围的泥砂。本申请提供的除泥砂系统及方法,可以对流体中的泥砂进行过滤,进而避免了在流体的集输过程中,流体内的泥砂对集输管道和集输管道上连接的各种仪器造成磨损,造成经济损失。(The application discloses a silt removing system and a silt removing method, and belongs to the field of fluid purification. The desilting system includes: the device comprises a first silt removing assembly, a second silt removing assembly and a controller. The outlet end of the first silt removing component is communicated with the inlet end of the second silt removing component, the controller is electrically connected with the first silt removing component and the second silt removing component respectively, the inlet end of the first silt removing component is communicated with the oil inlet end of the gathering and conveying pipeline, and the outlet end of the second silt removing component is communicated with the oil conveying end of the gathering and conveying pipeline. The first silt removing component can filter silt in the first particle size range, and the second silt removing component can filter silt in the second particle size range. The silt removing system and method provided by the application can filter silt in the fluid, and further avoid that the silt in the fluid abrades various instruments connected on a gathering and transportation pipeline and a gathering and transportation pipeline in the gathering and transportation process of the fluid, so that economic loss is caused.)

1. A silt removing system, characterized in that the silt removing system comprises: the device comprises a first silt removing component (1), a second silt removing component (2) and a controller (3);

the outlet end of the first silt removing component (1) is communicated with the inlet end of the second silt removing component (2), the controller (3) is electrically connected with the first silt removing component (1) and the second silt removing component (2) respectively, the inlet end of the first silt removing component (1) is communicated with the oil inlet end of a gathering and conveying pipeline, and the outlet end of the second silt removing component (2) is communicated with the oil conveying end of the gathering and conveying pipeline;

the first silt removing component (1) can filter silt and sand with the particle size within a first particle size range, the second silt removing component (2) can filter silt and sand with the particle size within a second particle size range, the maximum particle size within the first particle size range is larger than the maximum particle size within the second particle size range, and the controller (3) can control the first silt removing component (1) and/or the second silt removing component (2) to discharge silt and sand.

2. Silt removing system according to claim 1, wherein said first silt removing assembly (1) comprises: the device comprises a first silt remover (11) and a first control valve (12), wherein a silt discharging opening (111) is formed in the first silt remover (11);

the inlet end of the first silt remover (11) is used for being communicated with the oil inlet end, the outlet end of the first silt remover (11) is communicated with the inlet end of the second silt removing assembly (2), the first control valve (12) is connected to the silt discharging port (111), and the first control valve (12) is electrically connected with the controller (3);

first sand separator (11) can filter the silt particle of first particle diameter scope, controller (3) can control first control valve (12) are opened or are closed, first sand separator (11) can be in arrange the silt particle when first control valve (12) are opened, and can be in stop when first control valve (12) are closed and arrange the silt particle.

3. A silt removing system according to claim 2, wherein said first silt removing assembly (1) further comprises a first pressure detecting module (13);

the first pressure detection module (13) is fixed on the first silt remover (11), and the first pressure detection module (13) is electrically connected with the controller (3);

the first pressure detection module (13) is used for detecting first pressure values of an inlet end and an outlet end of the first silt remover (11) and transmitting a first pressure signal corresponding to the detected first pressure value to the controller (3), and the controller (3) can control the first control valve (12) to be opened or closed based on the first pressure signal.

4. A silt removing system according to claim 3, wherein said controller (3) controls said first control valve (12) to open when a first pressure value corresponding to said first pressure signal is greater than a first pressure threshold value, and said controller (3) controls said first control valve (12) to close when said first pressure value corresponding to said first pressure signal is less than a second pressure threshold value, said first pressure threshold value being greater than said second pressure threshold value.

5. A silt removing system according to claim 1, wherein said second silt removing assembly (2) comprises a second silt remover (21), an inlet end of said second silt remover (21) being in communication with an outlet end of said first silt removing assembly (1), an outlet end of said second silt remover (21) being adapted to be in communication with said oil feed end;

the second silt remover (21) comprises a plurality of stages of filter screens, the plane where each stage of filter screen is located and the flow direction of fluid form a certain included angle, the particle size of silt filtered by each stage of filter screen is different, and the flow direction of the fluid is reduced in sequence.

6. A silt removing system according to any one of claims 1 to 5, wherein said first silt removing assembly (1) further comprises: a first bypass valve (14);

the inlet end of the first silt removing component (1) is provided with a first inlet valve (15), the outlet end of the first silt removing component (1) is provided with a first outlet valve (16), the first end of a first bypass valve (14) is communicated with the end, connected with the first silt removing component (1), of the first inlet valve (15), and the second end of the first bypass valve (14) is communicated with the end, connected with the first silt removing component (1), of the first outlet valve (16).

7. A silt removing system according to claim 6, wherein said second silt removing assembly (2) further comprises: a second bypass valve (22);

the entry end of second desilting subassembly (2) is provided with second inlet valve (23), the exit end of second desilting subassembly (2) is provided with second outlet valve (24), the first end of second bypass valve (22) with on second inlet valve (23) not with the one end intercommunication that second desilting subassembly (2) are connected, the second end of second bypass valve (22) with on second outlet valve (24) not with the one end intercommunication that second desilting subassembly (2) are connected.

8. Silt removing system according to claim 1, wherein said first silt removing assembly (1) comprises a first silt remover (11) which is a spiral silt remover and said second silt removing assembly (2) comprises a second silt remover (21) which is a flow guiding shingled filter.

9. A silt removing method is applied to a silt removing system, the silt removing system comprises a first silt removing assembly, a second silt removing assembly and a controller, the first silt removing assembly comprises a first silt remover, a first control valve and a first pressure detection module, and the second silt removing assembly comprises a second silt remover, a second control valve and a second pressure detection module;

characterized in that the method comprises:

when the fluid to be filtered flows through the first silt remover, filtering silt with the particle size within a first particle size range in the fluid to be filtered through the first silt remover, conveying the filtered first fluid to the second silt remover, and storing the filtered silt in the first silt remover;

the first pressure detection module detects first pressure values at an inlet end and an outlet end of the first silt remover and transmits a first pressure signal corresponding to the detected first pressure value to the controller;

the controller controls the first control valve to be opened or closed based on the first pressure signal;

filtering the silt and sand with the particle size within a second particle size range in the first fluid through the second silt remover, conveying the filtered second fluid to the oil conveying end, and storing the filtered silt and sand in the second silt remover;

the second pressure detection module detects second pressure values at the inlet end and the outlet end of the second silt remover and transmits a second pressure signal corresponding to the detected second pressure value to the controller;

the controller controls the second control valve to open or close based on the second pressure signal.

10. The method of silt removal of claim 9, wherein the controller controlling the first control valve to open or close based on the first pressure signal comprises:

when a first pressure value corresponding to the first pressure signal is greater than a first pressure threshold value, the controller controls the first control valve to be opened, and when the first pressure value corresponding to the first pressure signal is less than a second pressure threshold value, the controller controls the first control valve to be closed;

the controller controls the second control valve to open or close based on the second pressure signal, and comprises:

when a second pressure value corresponding to the second pressure signal is greater than a third pressure threshold value, the controller controls the second control valve to be opened, and when the second pressure value corresponding to the second pressure signal is less than a fourth pressure threshold value, the controller controls the second control valve to be closed, wherein the third pressure threshold value is greater than the fourth pressure threshold value.

Technical Field

The application relates to the field of fluid purification, in particular to a silt removing system and a silt removing method.

Background

Along with development of oil fields, the amount of silt carried in the produced crude oil is larger and larger in the middle and later stages, the silt carried in the crude oil can influence the development of the oil fields, and various instruments connected to a gathering and transportation pipeline and the gathering and transportation pipeline are abraded in the gathering and transportation process of the crude oil, so that the silt of the produced crude oil needs to be removed urgently.

Disclosure of Invention

The application provides a silt removing system and a silt removing method, which can solve the problem of abrasion of various instruments connected on a gathering and transportation pipeline. The technical scheme is as follows:

in one aspect, a silt removing system is provided, the silt removing system comprising: the device comprises a first silt removing component, a second silt removing component and a controller;

the outlet end of the first silt removing component is communicated with the inlet end of the second silt removing component, the controller is electrically connected with the first silt removing component and the second silt removing component respectively, the inlet end of the first silt removing component is communicated with the oil inlet end of the gathering and conveying pipeline, and the outlet end of the second silt removing component is communicated with the oil conveying end of the gathering and conveying pipeline;

the first silt removing component can filter silt and sand with the particle size within a first particle size range, the second silt removing component can filter silt and sand with the particle size within a second particle size range, the maximum particle size within the first particle size range is larger than the maximum particle size within the second particle size range, and the controller can control the first silt removing component and/or the second silt removing component to discharge silt and sand.

Optionally, the first silt removing assembly comprises: the first silt remover is provided with a silt discharging port;

the inlet end of the first silt remover is used for being communicated with the oil inlet end, the outlet end of the first silt remover is communicated with the inlet end of the second silt removing assembly, the first control valve is connected to the silt discharging port, and the first control valve is electrically connected with the controller;

first sand separator can filter the silt particle of first particle diameter scope, the controller can control first control valve opens or closes, first sand separator can be in arrange the silt particle when first control valve opens, and can be in stop when first control valve closes and arrange the silt particle.

Optionally, the first silt removing assembly further comprises a first pressure detection module;

the first pressure detection module is fixed on the first silt remover and is electrically connected with the controller;

the first pressure detection module is used for detecting first pressure values of an inlet end and an outlet end of the first silt remover, and transmitting a first pressure signal corresponding to the detected first pressure value to the controller, and the controller can control the first control valve to be opened or closed based on the first pressure signal.

Optionally, when a first pressure value corresponding to the first pressure signal is greater than a first pressure threshold, the controller controls the first control valve to open, and when the first pressure value corresponding to the first pressure signal is less than a second pressure threshold, the controller controls the first control valve to close, where the first pressure threshold is greater than the second pressure threshold.

Optionally, the second silt removing assembly comprises a second silt remover, an inlet end of the second silt remover is communicated with an outlet end of the first silt removing assembly, and an outlet end of the second silt remover is used for being communicated with the oil feeding end;

the second silt remover includes multistage filter screen, and the plane at every grade filter screen place is certain contained angle with the flow direction of fluid, and the particle size of the filterable silt particle of every grade filter screen is different, just follows the flow direction of fluid reduces in proper order.

Optionally, the first silt removing assembly further comprises: a first bypass valve;

the inlet end of the first silt removing component is provided with a first inlet valve, the outlet end of the first silt removing component is provided with a first outlet valve, the first end of the first bypass valve is communicated with the end, which is not connected with the first silt removing component, of the first inlet valve, and the second end of the first bypass valve is communicated with the end, which is not connected with the first silt removing component, of the first outlet valve.

Optionally, the second silt removing assembly further comprises: a second bypass valve;

the entry end of second desilting subassembly is provided with second inlet valve, the exit end of second desilting subassembly is provided with second outlet valve, the first end of second bypass valve with on the second inlet valve not with the one end intercommunication that the second desilting subassembly is connected, the second end of second bypass valve with on the second outlet valve not with the one end intercommunication that the second desilting subassembly is connected.

Optionally, the first silt remover that first silt removing subassembly includes is spiral silt remover, the second silt remover that the second silt removing subassembly includes is water conservancy diversion stack tile filter.

In another aspect, a silt removing method is provided, and is applied to a silt removing system, wherein the silt removing system comprises a first silt removing assembly, a second silt removing assembly and a controller, the first silt removing assembly comprises a first silt remover, a first control valve and a first pressure detection module, and the second silt removing assembly comprises a second silt remover, a second control valve and a second pressure detection module;

characterized in that the method comprises:

when the fluid to be filtered flows through the first silt remover, filtering silt with the particle size within a first particle size range in the fluid to be filtered through the first silt remover, conveying the filtered first fluid to the second silt remover, and storing the filtered silt in the first silt remover;

the first pressure detection module detects first pressure values at an inlet end and an outlet end of the first silt remover and transmits a first pressure signal corresponding to the detected first pressure value to the controller;

the controller controls the first control valve to be opened or closed based on the first pressure signal;

filtering the silt and sand with the particle size within a second particle size range in the first fluid through the second silt remover, conveying the second fluid obtained after filtration to the oil conveying end, and storing the filtered silt and sand in the second silt remover;

the second pressure detection module detects second pressure values at the inlet end and the outlet end of the second silt remover and transmits a second pressure signal corresponding to the detected second pressure value to the controller;

the controller controls the second control valve to open or close based on the second pressure signal.

Optionally, the controller controls the first control valve to open or close based on the first pressure signal, including:

when a first pressure value corresponding to the first pressure signal is greater than a first pressure threshold value, the controller controls the first control valve to be opened, and when the first pressure value corresponding to the first pressure signal is less than a second pressure threshold value, the controller controls the first control valve to be closed;

the controller controls the second control valve to open or close based on the second pressure signal, and comprises:

when a second pressure value corresponding to the second pressure signal is greater than a third pressure threshold value, the controller controls the second control valve to be opened, and when the second pressure value corresponding to the second pressure signal is less than a fourth pressure threshold value, the controller controls the second control valve to be closed, wherein the third pressure threshold value is greater than the fourth pressure threshold value.

The beneficial effects that technical scheme that this application provided brought can include at least:

in this application, with this desilting system with gathering and transportation pipeline come the oil end with send the oil end intercommunication after, can filter the silt particle that the particle size that contains is located the first particle size scope in waiting to filter the fluid through first desilting subassembly, later rethread second desilting subassembly filters the silt particle that the particle size is located the second particle size scope, and then can realize treating the dual filtration of filtering the fluid to the filter effect of filtering the fluid is treated in the improvement. In addition, after the first silt removing component and the second silt removing component filter the fluid to be filtered, in order to avoid filtered silt from blocking the first silt removing component and the second silt removing component, the first silt removing component and/or the second silt removing component can be controlled by the controller to discharge silt. Therefore, through the silt removing system provided by the embodiment of the application, silt in the fluid can be filtered, and further, the phenomenon that the contained silt abrades various instruments connected on a gathering and transporting pipeline and a gathering and transporting pipeline to cause economic loss in the gathering and transporting process of the fluid to be filtered is avoided.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, 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 diagram of a silt removing system provided by an embodiment of the present application;

FIG. 2 is a schematic structural diagram of another silt removing system provided by the embodiment of the application;

FIG. 3 is a schematic structural diagram of another silt removing system provided by the embodiment of the present application;

FIG. 4 is a schematic structural diagram of another silt removing system provided by the embodiment of the present application;

FIG. 5 is a schematic structural diagram of another silt removing system provided by an embodiment of the present application;

fig. 6 is a flowchart of a silt removing method according to an embodiment of the present application.

Reference numerals:

1: a first silt removing assembly; 2: a second silt removing assembly; 3: a controller; 4: a main through valve; 5: a third silt removing assembly; 6: a fourth silt removing component;

11: a first desander; 12: a first control valve; 13: a first pressure detection module; 14: a first bypass valve; 15: a first inlet valve; 16: a first outlet valve; 21: a second desander; 22: a second bypass valve; 23: a second inlet valve; 24: a second outlet valve; 25: a second control valve; 26: a second pressure detection module;

111: and a sludge and sand discharging port.

Detailed Description

To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of a silt removing system provided in an embodiment of the present application. The desilting system may include: a first silt removing assembly 1, a second silt removing assembly 2 and a controller 3 (not shown in the figure). The exit end that first removes silt particle subassembly 1 communicates with the entry end that the second removed silt particle subassembly 2, and controller 3 removes silt particle subassembly 1 and second respectively and removes silt particle subassembly 2 electricity to be connected, and the entry end that first removed silt particle subassembly 1 is used for and gathers defeated pipeline's the end intercommunication that comes oil, and the exit end that the second removed silt particle subassembly 2 is used for and gathers defeated pipeline's oil delivery end intercommunication. First silt particle subassembly 1 can filter the silt particle that the particle size is located first particle diameter within range, and second silt particle subassembly 2 can filter the silt particle that the particle size is located the second particle diameter within range, and the maximum particle size in the first particle diameter within range is greater than the maximum particle size in the second particle diameter within range, and controller 3 can control first silt particle subassembly 1 and/or second silt particle subassembly 2 and arrange the silt particle.

After the silt removing system is communicated with the oil inlet end and the oil delivery end of the gathering and transportation pipeline, silt containing particles in the fluid to be filtered can be filtered through the first silt removing component 1, then silt containing particles in the second particle size range can be filtered through the second silt removing component 2, and therefore dual filtering of the fluid to be filtered can be achieved, and the filtering effect of the fluid to be filtered is improved. In addition, after first silt removing subassembly 1 and second silt removing subassembly 2 treat the filtration fluid and filter, in order to avoid filterable silt to block up first silt removing subassembly 1 and second silt removing subassembly 2, can also discharge silt through first silt removing subassembly 1 and/or second silt removing subassembly 2 of controller 3 control. Therefore, through the silt removing system provided by the embodiment of the application, silt in the fluid can be filtered, and further, the phenomenon that the contained silt abrades various instruments connected on a gathering and transporting pipeline and a gathering and transporting pipeline to cause economic loss in the gathering and transporting process of the fluid to be filtered is avoided.

Assuming that the silt removing system is used for removing silt in crude oil, in such a scenario, the inlet end of the first silt removing component 1 can be communicated with the oil inlet end of the gathering and transportation pipeline, the outlet end of the second silt removing component 2 is communicated with the oil delivery end of the gathering and transportation pipeline, and when crude oil is delivered to the oil delivery end of the gathering and transportation pipeline from the oil inlet end of the gathering and transportation pipeline sequentially through the first silt removing component 1 and the second silt removing component 2, the silt removing system can filter silt in the first particle size range and silt in the second particle size range out of the crude oil, so as to purify the crude oil.

It is worth noting that the maximum particle size in the first particle size range can be larger than the maximum particle size in the second particle size range, in other words, the first silt removing component 1 can filter silt with larger particle size, and the second silt removing component 2 can filter silt with smaller particle size, so that the first silt removing component 1 and the second silt removing component 2 can achieve the purpose of filtering silt in a grading manner, and further achieve better filtering effect.

Of course, the maximum particle size in the first particle size range may be smaller than or equal to the maximum particle size in the second particle size range, and only the fluid to be filtered needs to be filtered, which is not mandatory in the embodiment of the present application.

It is understood that the silt removing system can filter silt in crude oil, and certainly, can also filter silt in other fluids to be filtered, such as silt in water, and the embodiment of the present application does not specifically limit the types of fluids that can be filtered by the silt removing system. In addition, this silt removing system not only can be used for filtering silt, of course, also can filter other particulate matter in the fluid that waits to filter, as long as the particle diameter of particulate matter is located first particle diameter within range or is located second particle diameter within range, and this application embodiment does not do the restriction to the particulate matter that silt removing system can filter.

It should be noted that the outlet end of the first silt removing component 1 may be communicated with the inlet end of the second silt removing component 2 through a communicating pipe, and certainly, the outlet end of the first silt removing component 1 may also be directly screwed to the inlet end of the second silt removing component 2 through a thread, so as to communicate the outlet end of the first silt removing component 1 with the inlet end of the second silt removing component 2.

In some embodiments, referring to fig. 2, the first silt removing assembly 1 may comprise: first silt remover 11 and first control valve 12 are provided with row's silt particle mouth 111 on the first silt remover 11. The inlet end of the first silt remover 11 is used for communicating with the oil inlet end, the outlet end of the first silt remover 11 is communicated with the inlet end of the second silt removing component 2, the first control valve 12 is connected to the silt discharging opening 111, and the first control valve 12 is electrically connected with the controller 3. First silt remover 11 can filter the silt particle of first particle diameter scope, and controller 3 can control first control flap 12 and open or close, and first silt remover 11 can arrange the silt particle when first control flap 12 opens, and can stop when first control flap 12 closes and arrange the silt particle.

Like this, when the fluid gets into in the first sand trap 11 through the entry end of first sand trap 11, can filter the silt particle of first particle size scope in the fluid through first sand trap 11 to can control first control valve 12 under the control of controller 3 and open, carry out the silt particle with the filterable silt particle of first sand trap 11 through row silt particle mouth 111, and after the silt particle finishes, control first control valve 12 under the control of controller 3 and close, in order to stop row silt particle.

It should be noted that the inlet end of the first sand trap 11 may be communicated with the oil inlet end by a threaded connection manner, and may also be communicated with the oil inlet end by another manner, which is not specifically limited in the embodiment of the present application. In addition, the exit end of first silt remover 11 can also be through other modes and second silt removing assembly 2's entry end intercommunication through gathering and transportation pipeline and second silt removing assembly 2's entry end intercommunication, and this application embodiment does not do specific restriction to this yet.

It should be further noted that, in some exemplary embodiments, the first sand remover 11 may be configured to filter sand and mud having a particle size of more than 0.5mm, and of course, based on an actual application scenario, the first sand remover 11 may also be configured to filter sand and mud having other particle size ranges, and the particle size range of the sand and mud that can be filtered by the first sand remover 11 is not specifically limited in this embodiment of the application.

Further, in some embodiments, referring to fig. 2, the first silt removing assembly 1 may further comprise a first pressure detecting module 13. The first pressure detection module 13 is fixed on the first silt remover 11, and the first pressure detection module 13 is electrically connected with the controller 3. The first pressure detection module 13 is used for detecting first pressure values at an inlet end and an outlet end of the first silt remover 11, transmitting a first pressure signal corresponding to the detected first pressure value to the controller 3, and the controller 3 can control the first control valve 12 to be opened or closed based on the first pressure signal.

In the process of filtering the silt in the fluid by the first silt remover 11, the filtered silt can be temporarily stored in the inner cavity of the first silt remover 11 by the first silt remover 11, along with the silt in the inner cavity of the first silt remover 11 slowly changes, the first pressure value between the inlet end and the outlet end of the first silt remover 11 can be changed, the first pressure value corresponds to a first pressure signal, the first pressure detection module 13 can transmit the first pressure signal corresponding to the first pressure value to the controller 3, and after the controller 3 receives the first pressure signal, the first control valve 12 can be controlled to be opened or closed based on the first pressure signal.

It should be noted that the first pressure detection module 13 may be a differential pressure transmitter, and of course, the first pressure detection module 13 may also be other components capable of detecting the first pressure value between the inlet end and the outlet end of the first silt remover 11, and this is not specifically limited in this embodiment of the application.

It should be noted that the first pressure value is an absolute value of a difference between the pressure value at the inlet end and the pressure value at the outlet end of the first sand remover 11.

In some embodiments, the controller 3 controls the first control valve 12 to open when the first pressure value corresponding to the first pressure signal is greater than the first pressure threshold, and the controller 3 controls the first control valve 12 to close when the first pressure value corresponding to the first pressure signal is less than the second pressure threshold. In other words, when the first pressure value that first pressure signal corresponds is greater than first pressure threshold value, first control valve 12 opens and carries out the silt discharge, and when the first pressure value that first pressure signal corresponds is less than second pressure threshold value, first control valve 12 closes and stops the silt discharge, like this, under the effect of first pressure detection module 13, when the silt that first desliming ware 11 was stored reaches certain volume, can carry out the silt discharge to first desliming ware 11 automatically, has alleviateed technical staff's intensity of labour.

It should be noted that the first pressure threshold may be greater than the second pressure threshold, for example, assuming that the first pressure threshold is 10MPa and the second pressure threshold is 5MPa, when the first pressure value is 12MPa, the controller 3 may control the first control valve 12 to open for discharging the sand. When the first pressure value is 4MPa, the controller 3 may control the first control valve 12 to close, and stop discharging the sand.

In some embodiments, referring to fig. 2, the second silt removing assembly 2 may comprise a second silt remover 21, an inlet end of the second silt remover 21 being in communication with an outlet end of the first silt removing assembly 1, an outlet end of the second silt remover 21 being adapted to be in communication with an oil feed end. The second sand separator 21 includes a plurality of stages of filter screens, a plane on which each stage of filter screen is located forms a certain included angle with the flow direction of the fluid, and the sizes of the sand and the mud filtered by each stage of filter screen are different and are sequentially reduced along the flow direction of the fluid.

In this way, the fluid filtered by the first deslimer 11 may continue to enter the second deslimer 21, after which the second deslimer 21 may then filter the silt in the fluid. Because the plane of each stage of filter screen and the flow direction of the fluid form a certain included angle, the fluid can directly collide on the filter screen, and the filter screen is convenient for filtering the fluid.

It is worth noting that the angle of the included angle between the plane where each stage of filter screen is located and the flow direction of the fluid may be 90 degrees, and of course, the angle of the included angle may also be other numerical values, and only the requirement of filtering the silt in the fluid is met, and the angle of the included angle is not specifically limited in the embodiment of the present application. In addition, it is also worth noting that the multi-stage filter screen may be a three-stage filter screen, and certainly, may also be a filter screen of other stages, which is not specifically limited in this application embodiment.

When the multistage filter screen is the tertiary filter screen, suppose that the tertiary filter screen is first order filter screen, second grade filter screen and third level filter screen along the flow direction of fluid in proper order, in a scene, can realize the filtration of the silt particle in the fluid through setting up the mesh number of the filter screen at each level in the tertiary filter screen. For example, the mesh number of the first-stage filter screen is 60 meshes to filter mud and sand with the particle size of 0.25mm-0.5mm, the mesh number of the second-stage filter screen is 120 meshes to filter mud and sand with the particle size of 0.125mm-0.25mm, and the mesh number of the third-stage filter screen is 230 meshes to filter mud and sand with the particle size of 0.0625mm-0.125 mm. Of course, the filter screens at all levels can also be respectively set to other mesh numbers, and the mesh numbers of the filter screens at all levels are not specifically limited in the embodiment of the application. Through setting up multistage filter screen and filtering the silt particle in the fluid, can realize the hierarchical filtration, improve the filter effect.

It should be noted that the first silt remover 11 included in the first silt removing assembly 1 may be a spiral silt remover, and the second silt remover 21 included in the second silt removing assembly 2 may be a flow guiding laminated tile filter.

Next, the operation principle of the first silt remover 11 and the second silt remover 21 will be explained in detail by taking the first silt remover 11 as a spiral silt remover and the second silt remover 21 as a flow guiding laminated tile filter, respectively.

First, the fluid enters the first sand remover 11 through the inlet end of the first sand remover 11, and then the sand and the sludge of the first particle size range are separated out of the first sand remover 11 by the spiral flow of the first sand remover 11. Then, the fluid enters the second sand separator 21 through the inlet end of the second sand separator 21, the impeller of the second sand separator 21 is subjected to the pressure from the fluid and the suction force of the second sand separator 21, so that the impeller starts to rotate to form a pressure funnel, and the fluid and the sand in the fluid start to rotate along with the impeller, that is, the fluid and the sand in the fluid are filtered while rotating, so that the condition that the filter screen of the second sand separator 21 is stuck by the sand in the fluid can be avoided, and the filtering effect is improved.

Of course, the first silt removing component 11 may also be another device having a filtering function, and this is not specifically limited in the embodiment of the present application. Similarly, the second silt remover 21 may also be another device with a filtering function, which is not specifically limited in the embodiment of the present application.

In some embodiments, referring to fig. 3, the first silt removing assembly 1 may further include: a first bypass valve 14. The inlet end of the first silt removing component 1 is provided with a first inlet valve 15, the outlet end of the first silt removing component 1 is provided with a first outlet valve 16, the first end of the first bypass valve 14 is communicated with the end, which is not connected with the first silt removing component 1, of the first inlet valve 15, and the second end of the first bypass valve 14 is communicated with the end, which is not connected with the first silt removing component 1, of the first outlet valve 16.

Like this, in a scenario, under the condition that first desilting subassembly 1 breaks down, can close first inlet valve 15 at first, open first bypass valve 14 simultaneously, the fluid alright get into in the second desilting subassembly 1 through first bypass valve 14 and carry out the desilting, avoided because first desilting subassembly 1 breaks down and leads to the unable condition of transmitting to the oil feeding end of fluid.

In another scenario, there may be a situation where the first silt removing assembly 1 is operating normally and the second silt removing assembly 2 is malfunctioning, based on which, in some embodiments, referring to fig. 3, the second silt removing assembly 2 may further include: a second bypass valve 22. The inlet end of the second silt removing component 2 is provided with a second inlet valve 23, the outlet end of the second silt removing component 2 is provided with a second outlet valve 24, the first end of the second bypass valve 22 is communicated with the end, which is not connected with the second silt removing component 2, of the second inlet valve 23, and the second end of the second bypass valve 22 is communicated with the end, which is not connected with the second silt removing component 2, of the second outlet valve 24.

Under the condition that second silt removing component 2 breaks down, can close second inlet valve 23 at first, open second bypass valve 22 simultaneously, like this, fluid alright get into the oil feed end through second bypass valve 22 and carry out fluidic continuous transmission, avoided because second silt removing component 2 breaks down and lead to the unable condition that continues transmission of fluid.

Further, in some embodiments, there is a case where both the first silt removing assembly 1 and the second silt removing assembly 2 are out of order, and when both the first silt removing assembly 1 and the second silt removing assembly 2 are out of order, in a possible implementation manner, the first inlet valve 15 and the second inlet valve 23 may be closed at the same time, and the first bypass valve 14 and the second bypass valve 22 may be opened at the same time, so that the fluid may be sequentially transmitted to the oil feeding end through the first bypass valve 14 and the second bypass valve 22, so as to ensure the normal transmission of the fluid.

In another possible implementation manner, referring to fig. 4, the silt removing system may further include a main through valve 4, a first end of the main through valve 4 is communicated with the oil inlet end, and a second end of the main through valve 4 is communicated with the oil outlet end, so that when both the first silt removing assembly 1 and the second silt removing assembly 2 are in failure, the main through valve 4 may also be directly opened, so that the fluid at the oil inlet end may be directly transmitted to the oil outlet end through the main through valve 4, and a situation that the fluid cannot be continuously transmitted due to the failure of both the first silt removing assembly 1 and the second silt removing assembly 2 is avoided.

In some embodiments, referring to fig. 5, the silt removing system may further comprise a third silt removing assembly 5 and a fourth silt removing assembly 6, an outlet end of the third silt removing assembly 5 is communicated with an inlet end of the fourth silt removing assembly 6, the controller 3 is electrically connected with the third silt removing assembly 5 and the fourth silt removing assembly 6 respectively, the inlet end of the third silt removing assembly 5 is used for being communicated with an oil inlet end of the gathering and conveying pipeline, an outlet end of the fourth silt removing assembly 6 is used for being communicated with an oil feeding end of the gathering and conveying pipeline, so that, by arranging the third silt removing assembly 5 and the fourth silt removing assembly 6, on one hand, the efficiency of filtering the silt can be accelerated, on the other hand, under the condition that the first silt removing component 1 and the second silt removing component 2 both have faults, the filtration of the silt in the fluid continues through the third silt removing assembly 5 and the fourth silt removing assembly 6.

Wherein, third except that silt particle subassembly 5 is similar with first except that silt particle subassembly 1, and first except that silt particle subassembly 1 can be referred to its specific theory of operation, and this application embodiment is no longer repeated third except that silt particle subassembly 5. The fourth removes silt particle subassembly 6 and is similar with second except that silt particle subassembly 2, and second except that silt particle subassembly 2 can be referred to its specific theory of operation, and this application embodiment is no longer repeated fourth except that silt particle subassembly 6.

In the embodiment of the application, after the oil end and the oil delivery end that come with this silt removing system and gathering and transportation pipeline communicate, can filter the silt particle that the particle size that contains is located first particle size within range in waiting to filter the fluid through first silt particle subassembly 1, later, rethread second silt particle subassembly 2 filters the silt particle that the particle size is located second particle size within range, and then can realize treating the dual filtration of filtering the fluid to the filter effect who treats the filtering fluid is treated in the improvement. In addition, after first silt removing subassembly 1 and second silt removing subassembly 2 treat the filtration fluid and filter, in order to avoid filterable silt to block up first silt removing subassembly 1 and second silt removing subassembly 2, can also discharge silt through first silt removing subassembly 1 and/or second silt removing subassembly 2 of controller 3 control. Therefore, through the silt removing system provided by the embodiment of the application, silt in the fluid can be filtered, and further, the phenomenon that the contained silt abrades various instruments connected on a gathering and transporting pipeline and a gathering and transporting pipeline to cause economic loss in the gathering and transporting process of the fluid to be filtered is avoided. In addition, the first silt removing component 1 and the second silt removing component 2 can automatically complete row silt, so that the labor intensity of technicians can be reduced.

Fig. 5 is a schematic structural diagram of a silt removing system provided in an embodiment of the present application, and fig. 6 is a flowchart of a silt removing method provided in an embodiment of the present application. The method is applied to a silt removing system, which can comprise a first silt removing assembly 1, a second silt removing assembly 2 and a controller 3, wherein the first silt removing assembly 1 comprises a first silt removing device 11, a first control valve 12 and a first pressure detection module 13, and the second silt removing assembly 2 comprises a second silt removing device 21, a second control valve 25 and a second pressure detection module 26, and the method is shown in fig. 5. Referring to fig. 6, the method includes:

step 601: when the fluid to be filtered flows through the first silt remover, filtering silt and sand with the particle size within a first particle size range in the fluid to be filtered through the first silt remover, conveying the filtered first fluid to the second silt remover, and storing the filtered silt and sand in the first silt remover.

It should be noted that the fluid to be filtered may be a fluid such as crude oil, water, etc., and the fluid to be filtered is not particularly limited in the embodiments of the present application. In addition, the first fluid refers to a fluid after being filtered by the first deslimer, and for convenience of understanding, the first fluid may be understood as a fluid flowing out of an outlet end of the first deslimer.

Step 602: the first pressure detection module detects first pressure values of an inlet end and an outlet end of the first silt remover, and transmits a first pressure signal corresponding to the detected first pressure value to the controller.

Because first pressure detection module is fixed on first desander, consequently, can detect the first pressure value of the entry end and the exit end of first desander through first pressure detection module. Because the first pressure detection module is electrically connected with the controller, and in addition, the first pressure value can correspond to one first pressure signal, the first pressure signal corresponding to the detected first pressure value can be transmitted to the controller.

Step 603: the controller controls the first control valve to open or close based on the first pressure signal.

The controller controlling the first control valve to open or close based on the first pressure signal may be implemented by:

when the first pressure value corresponding to the first pressure signal is larger than the first pressure threshold value, the controller controls the first control valve to be opened, and when the first pressure value corresponding to the first pressure signal is smaller than the second pressure threshold value, the controller controls the first control valve to be closed.

The first pressure threshold may be freely set according to a use scenario, and the first pressure threshold is not specifically limited in the embodiment of the present application. Similarly, the second pressure threshold may also be freely set according to a use scenario, and the second pressure threshold is not specifically limited in this embodiment of the application.

Step 604: and filtering the silt and sand with the particle size within the second particle size range in the first fluid through a second silt remover, conveying the filtered second fluid to an oil conveying end, and storing the filtered silt and sand in the second silt remover.

This step is similar to step 601, and is not described again in this embodiment of the present application. It should be noted that the maximum particle size in the first particle size range may be larger than the maximum particle size in the second particle size range, and of course, in some scenarios, the maximum particle size in the first particle size range may also be smaller than or equal to the maximum particle size in the second particle size range, which is not mandatory in the embodiments of the present application.

It should be noted that the second fluid refers to the fluid after being filtered by the second sand trap, and for the sake of understanding, the second fluid may be understood as the fluid flowing out of the outlet end of the second sand trap.

Step 605: the second pressure detection module detects second pressure values of the inlet end and the outlet end of the second silt remover, and transmits a second pressure signal corresponding to the detected second pressure value to the controller.

This step is similar to step 602, and is not described again in this embodiment of the present application.

Step 606: the controller controls the second control valve to open or close based on the second pressure signal.

The controller may control the second control valve to open or close based on the second pressure signal by:

when a second pressure value corresponding to the second pressure signal is greater than a third pressure threshold value, the controller controls the second control valve to be opened, and when the second pressure value corresponding to the second pressure signal is less than a fourth pressure threshold value, the controller controls the second control valve to be closed, wherein the third pressure threshold value is greater than the fourth pressure threshold value.

This step is similar to step 603, and details thereof are not repeated in this embodiment of the present application.

In an embodiment of the application, on one hand, when a first pressure value corresponding to the first pressure signal is greater than a first pressure threshold, the controller controls the first control valve to open, and when the first pressure value corresponding to the first pressure signal is less than a second pressure threshold, the controller controls the first control valve to close. That is, the silt and sand in the first silt and sand remover can be automatically discharged under the control of the controller. On the other hand, when the second pressure value corresponding to the second pressure signal is greater than the third pressure threshold value, the controller controls the second control valve to be opened, and when the second pressure value corresponding to the second pressure signal is less than the fourth pressure threshold value, the controller controls the second control valve to be closed, namely, under the control of the controller, the second control valve can automatically discharge the silt in the second silt remover. Therefore, the silt removing method provided by the embodiment of the application can automatically filter silt in the fluid, so that the labor intensity of technicians can be reduced.

The above description is only exemplary of the present application and should not be taken as limiting, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.