Anti-clamping stagnation self-heating liquid level meter of heavy oil separator

Abstract

The invention discloses an anti-clamping stagnation self-heating liquid level meter of a heavy oil separator. Comprising a protective catheter, an axial catheter cavity is formed in the protective catheter, and a window is formed in the outer wall of the protective catheter in the length direction; the upper portion and the lower portion of the protective guide pipe are used for being communicated with a first connecting pipe and a second connecting pipe of the heavy oil separator respectively. The floating ball is arranged in the pipe cavity; the arc-shaped strong magnets are non-uniformly and eccentrically arranged on the outer wall of the protective guide pipe in the length direction of the protective guide pipe; and the high-resistance closed-loop heating coil is formed by non-uniformly winding a high-resistance material. The device has the beneficial effects that the protective guide pipe, the floating ball, the arc-shaped strong magnets, the high-resistance closed-loop heating coil and the eddy current heating plate are arranged, the high-resistance closed-loop heating coil cuts a non-uniform magnetic field generated by the arc-shaped strong magnets in the process of ascending and descending along with the liquid level, eddy current is generated, thick oil is heated and melted, and the floating ball is prevented from being clamped.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of heavy oil liquid level measurement, and particularly relates to a heavy oil separator anti-stuck self-heating liquid level meter. BACKGROUND

[0002] The separators of various petrochemical industries all have the problem that the float ball of the liquid level meter is stuck due to the high viscosity and high pour point of the medium in the container. The existing treatment measures have great limitations, mainly in the following aspects: 1) the stuck liquid level meter causes safety accidents. The float ball of the liquid level meter is stuck, and it is not easy to be found by personnel during inspection, and it is easy to cause the tank to be overfilled or the liquid to be unable to be discharged due to the gas lock of the low liquid level export pump, which brings great hidden dangers to safety production. 2) The stuck liquid level meter consumes a lot of labor hours for disassembly and cleaning. Since the guide pipe has a small diameter and a length of several meters, it is difficult to clean. The conventional method of soaking in cleaning agent and high-temperature flushing has low efficiency, and it is difficult to completely clean the viscous oil adhered to the pipe wall. Frequent disassembly and cleaning of the liquid level meter consumes a lot of labor hours. 3) The risk of manual disassembly and cleaning of the liquid level meter is high, and it is easy to cause wear to the sealing surface of the single isolation ball valve. Once the container / separator or pressure suddenly changes, the single ball valve is impacted, greatly increasing the probability of oil and gas leakage. 4) The hot water descaling of the stuck liquid level meter has hidden dangers. The current common method for treating the stuck liquid level meter is to use the liquid of the nearby high water cut well or the high-temperature production water after treatment to flush the liquid level meter for a long time to ensure that the annulus between the guide pipe and the float ball is always in a dilute state of the viscous oil, thereby reducing the probability of oil accumulation in the inner wall of the float ball and the guide pipe and reducing the friction. However, this method has great safety hidden dangers for well control. The temporary short-circuiting of the high-temperature production water also easily causes "leakage, overflow and dripping", which causes burns to personnel. 5) The electric heat tracing for heating the guide pipe has low heating efficiency. The current commonly used method of wrapping the electric heat tracing around the guide pipe to heat and dissolve the viscous oil in the pipe has the following defects: 1) the electric heat tracing heating wire is unevenly wrapped, which has poor heating effect on the annulus of the guide pipe and is easy to fall off; 2) the electric heat tracing heating wire directly contacts the outer wall of the guide pipe with a small contact area, and basically relies on air for heat conduction and heat radiation, so the utilization rate of internal energy is low, resulting in a large waste of heat energy; 3) since the electric heat tracing heating wire is wrapped around the outer wall of the guide pipe, additional thermal insulation cotton and armor are needed to store the heat generated by the electric heat tracing heating wire to prevent the heat from being dissipated in the air, which increases the workload; 4) the electric heat tracing wire has poor insulation and a short service life. Once the insulation skin is damaged, it is easy to cause short circuit and fire, and secondary disasters such as electric shock occur, which has poor applicability on site; 5) the replacement of the electric heat tracing has a large workload, the maintenance cycle is short, the economic applicability is poor, and the ROI is low. SUMMARY

[0003] The purpose of the present application is to provide a kind of thick oil separator anti-jamming self-heating liquid level meter, it is equipped with protective guide tube, float ball, multiple arc strong magnet, high resistance closed loop heating coil, eddy heating plate, the high resistance closed loop heating coil in the process of cutting by liquid level rise and fall non-uniform magnetic field generated by multiple arc strong magnet, produce eddy, and heat melting thick oil, prevent float ball jamming.

[0004] To achieve the above object, the present application adopts the following technical solutions, comprising:

[0005] Protective guide tube, its inside is equipped with the tubular cavity of axial, be equipped with the window of being set along the length direction on the outer wall of protective guide tube;The upper portion and lower portion of protective guide tube are used for the first connecting pipe and second connecting pipe for being communicated with thick oil separator respectively;

[0006] Float ball, it is arranged in the tubular cavity, for indicating the liquid level position in protective guide tube;

[0007] Multiple arc strong magnet, it is unevenly eccentric and arranged on the outer wall of protective guide tube along the length direction of protective guide tube, for forming non-uniform magnetic field;

[0008] High resistance closed loop heating coil, it is unevenly wound by high resistance material, for cutting non-uniform magnetic field in the process of rising and falling with liquid level, produce eddy, and heat melting thick oil, prevent float ball jamming.

[0009] Preferably, further comprising:

[0010] Pressure type liquid level sensor, it is arranged in the lower end of protective guide tube, for detecting the liquid level in protective guide tube;

[0011] Capacitance type liquid level sensor, it is arranged in the upper end of protective guide tube, for detecting the liquid level in protective guide tube;

[0012] Wherein, the pressure type liquid level sensor and capacitance type liquid level sensor are electrically connected with server respectively, for uploading detection value to server.

[0013] Preferably, further comprising:

[0014] Thimble, it is arranged in the bottom of float ball, for abutting with the lower end surface of protective guide tube;

[0015] Wherein, the length of thimble is greater than the distance between the lower end of second connecting pipe and the lower end surface of protective guide tube.

[0016] Preferably, the float ball is composed of a pair of oppositely buckled float ball bodies;The float ball is made of non-magnetic hard copper alloy, which contains 14.5%-17.5% chromium and 14%-17% molybdenum.

[0017] Preferably, a fluorescent layer is arranged on the upper periphery of the floating ball, which can display red / green light waves after being excited by ultraviolet / blue light, so that the floating ball has high recognition; the fluorescent layer contains 0.69%-4.3% europium and 47.7%-48.31% terbium.

[0018] Preferably, a heat-sensitive coating is arranged on the lower periphery of the floating ball, which presents color transition when the temperature reaches a specific threshold, so as to intuitively display the threshold of the temperature generated by the floating ball.

[0019] Preferably, a plurality of detachable weight blocks are arranged on the inner periphery of the bottom of the floating ball, which are used for adjusting the weight of the floating ball.

[0020] Preferably, the arc-shaped strong magnets are arranged on the outer wall of the protection guide pipe in a circular arc shape through connecting rods; the arc-shaped strong magnets are permanent magnets or electromagnets.

[0021] Preferably, the protection guide pipe is made of a magnetic conductive material.

[0022] Preferably, the application further comprises:

[0023] The eddy current heating plates are arranged at the upper and lower ends of the high-resistance closed-loop heating coil respectively and are electrically connected with the high-resistance closed-loop heating coil; the eddy current heating plates are used for generating heat, melting thick oil and preventing the floating ball from being stuck.

[0024] The application has the beneficial effects that the protection guide pipe, the floating ball, the plurality of arc-shaped strong magnets, the high-resistance closed-loop heating coil and the eddy current heating plates are arranged, the high-resistance closed-loop heating coil cuts the non-uniform magnetic field generated by the plurality of arc-shaped strong magnets during the lifting process of the liquid level, generates eddy current, generates heat, melts thick oil and prevents the floating ball from being stuck. BRIEF DESCRIPTION OF DRAWINGS

[0025] Fig. 1 It is a perspective view of the thick oil separator anti-stuck self-heating liquid level meter.

[0026] Fig. 2 It is a front view of the thick oil separator anti-stuck self-heating liquid level meter.

[0027] Fig. 3 It is an explosion view of the floating ball. DETAILED DESCRIPTION

[0028] The application will be further described in detail below with reference to the drawings, so that those skilled in the art can implement the application according to the description and the drawings.

[0029] It should be understood that the terms such as "have", "contain" and "include" used herein do not exclude the presence or addition of one or other elements or combinations thereof.

[0030] As shown in Figs. 1-3 The thick oil separator anti-jamming self-heating liquid level meter 1 of the present application comprises:

[0031] A guide pipe 110 is internally provided with an axial lumen 111, and a window 112 is arranged on the outer wall of the guide pipe 110 in the length direction; the upper and lower parts of the guide pipe 110 are respectively connected with a first connecting pipe 113 and a second connecting pipe 114 for communicating with the thick oil separator; as a preferred embodiment, the guide pipe 110 is made of a magnetic conductive material. As a further preferred embodiment, a pressure type liquid level sensor 151 is arranged at the lower end of the guide pipe 110 for detecting the liquid level in the guide pipe 110; a capacitive type liquid level sensor 152 is arranged at the upper end of the guide pipe 110 for detecting the liquid level in the guide pipe 110; wherein the pressure type liquid level sensor 151 and the capacitive type liquid level sensor 152 are respectively electrically connected with a server for uploading the detection values to the server.

[0032] A floating ball 120 is arranged in the lumen 111 for indicating the liquid surface position in the guide pipe 110; as a preferred embodiment, the floating ball 120 is composed of a pair of oppositely buckled floating ball bodies 121; the floating ball 120 is made of a non-magnetic hard copper alloy containing 4.5%-17.5% chromium and 14%-17% molybdenum. As a preferred embodiment, a fluorescent layer 122 is arranged on the outer periphery of the upper part of the floating ball 120, which can display red / green light waves after being excited by ultraviolet / blue light, so that the floating ball has high recognition; the fluorescent layer contains 0.69%-4.3% europium and 47.7%-48.31% terbium. As a preferred embodiment, a heat-sensitive coating 123 is arranged on the outer periphery of the lower part of the floating ball 120, which presents color change when the temperature reaches a certain threshold value, facilitating the intuitive display of the threshold value of the temperature generated by the self-heating of the floating ball 120. As a further preferred embodiment, a plurality of detachably connected counterweights 124 are arranged on the inner periphery of the bottom of the floating ball 120 for adjusting the weight of the floating ball 120. As a further preferred embodiment, it further comprises a thimble 125 arranged at the bottom of the floating ball 120 for abutting against the lower end surface of the guide pipe 110; wherein the length of the thimble 125 is greater than the distance from the lower end of the second connecting pipe 114 to the lower end surface of the guide pipe 110.

[0033] A plurality of arc-shaped strong magnets 130 are arranged non-uniformly eccentrically on the outer wall of the guide pipe 110 in the length direction of the guide pipe 110 for forming a non-uniform magnetic field; as a preferred embodiment, the arc-shaped strong magnets 130 are in the form of circular arcs and are arranged on the outer wall of the guide pipe 110 through connecting rods 131; the arc-shaped strong magnets 130 are permanent magnets or electromagnets.

[0034] A high-resistance closed loop heating coil 140 is formed by non-uniformly winding a high-resistance material, and is used to cut the non-uniform magnetic field during the lifting and lowering of the liquid surface, to generate eddy current and heat to melt the heavy oil and prevent the float ball 120 from being stuck.

[0035] In use, the guard pipe 110 is connected to the separator through the first connecting pipe 113 and the second connecting pipe 114 to form a communicating vessel structure, and the liquid level in the guard pipe 110 is consistent with the liquid level in the separator. The float ball 120 floats on the liquid surface in the guard pipe 110. A plurality of arc-shaped strong magnets 130 are non-uniformly and eccentrically arranged on the outer wall of the guard pipe 110 along the length direction of the guard pipe 110, and are used to form a non-uniform magnetic field. When the float ball 120 rises and falls with the liquid surface, the high-resistance closed loop heating coil 140 cuts the non-uniform magnetic field, generates eddy current, and heats to melt the heavy oil, thereby preventing the float ball 120 from being stuck.

[0036] In another embodiment, a pressure type liquid level sensor 151 is arranged at the lower end of the guard pipe 110 to detect the liquid level in the guard pipe 110, and a capacitive type liquid level sensor 152 is arranged at the upper end of the guard pipe 110 to detect the liquid level in the guard pipe 110. The pressure type liquid level sensor 151 and the capacitive type liquid level sensor 152 are respectively electrically connected to the server to upload the detection values to the server.

[0037] In another embodiment, a thimble 125 is arranged at the bottom of the float ball 120 to abut against the lower end surface of the guard pipe 110. The length of the thimble 125 is greater than the distance from the lower end of the second connecting pipe 114 to the lower end surface of the guard pipe 110.

[0038] In another embodiment, the float ball 120 is composed of a pair of oppositely buckled float ball bodies 121. The float ball is made of non-magnetic hard copper alloy containing 4.5%-17.5% chromium and 14%-17% molybdenum.

[0039] In another embodiment, a fluorescent layer 122 is arranged on the outer periphery of the upper portion of the float ball 120. The fluorescent layer 122 can display red / green light waves after being excited by ultraviolet / blue light, so that the float ball has high recognition. The fluorescent layer contains 0.69%-4.3% europium and 47.7%-48.31% terbium.

[0040] In another embodiment, a heat-sensitive coating 123 is provided on the outer periphery of the lower part of the floating ball 120, which changes color when the temperature reaches a certain threshold, thus visually indicating the threshold temperature generated by the floating ball 120 due to heat.

[0041] In another embodiment, a plurality of detachable weight blocks 124 are provided on the inner periphery of the bottom of the floating ball 120, which are used to adjust the weight of the floating ball 120.

[0042] In another embodiment, the arc-shaped strong magnets 130 are in the shape of a circular arc and are arranged on the outer wall of the protective guide pipe 110 through connecting rods 131. The arc-shaped strong magnets 130 are permanent magnets or electromagnets.

[0043] In another embodiment, the protective guide pipe 110 is made of a magnetically conductive material.

[0044] In another embodiment, the eddy current heating plates 160 are arranged on the upper and lower ends of the high-resistance closed-loop heating coil 140 and are electrically connected to the high-resistance closed-loop heating coil 140, which are used to generate heat to melt thick oil and prevent the floating ball 120 from being stuck.

[0045] In summary, the thick oil separator anti-sticking self-heating liquid level meter 1 of the present application is provided with a protective guide pipe 110, a floating ball 120, a plurality of arc-shaped strong magnets 130, a high-resistance closed-loop heating coil 140, and eddy current heating plates 160. The high-resistance closed-loop heating coil 140 cuts the non-uniform magnetic field generated by the plurality of arc-shaped strong magnets 130 during the lifting and lowering of the liquid surface, generates eddy current, and heats and melts thick oil to prevent the floating ball 120 from being stuck.

[0046] Although the embodiments of the present application have been disclosed as above, they are not limited to the applications listed in the specification and embodiments, and can be fully applied to various fields suitable for the present application. Additional modifications can be easily made by those skilled in the art, and therefore the present application is not limited to specific details and the figures shown and described herein.

Claims

1. A self-heating level gauge for heavy oil separators with anti-jamming properties, characterized in that, The application relates to a protective guide pipe, which comprises the following parts: a protective guide pipe, which is internally provided with an axial pipe cavity, and is externally provided with a window arranged along the length direction; a first connecting pipe and a second connecting pipe are arranged at the upper part and the lower part of the protective guide pipe respectively for being connected with a thick oil separator; a floating ball arranged in the pipe cavity for indicating the liquid level position in the protective guide pipe; a plurality of arc-shaped strong magnets arranged on the outer wall of the protective guide pipe along the length direction of the protective guide pipe and non-uniformly eccentrically, for forming a non-uniform magnetic field; a high-resistance closed loop heating coil, which is non-uniformly wound by high-resistance material, for cutting the non-uniform magnetic field during the lifting and falling of the liquid level, generating eddy current, and heating and melting thick oil, so as to prevent the floating ball from being stuck.

2. The heavy oil separator anti-sticking self-heating liquid level meter according to claim 1, characterized in that, The application further comprises: a pressure type liquid level sensor arranged at the lower end of the protective guide pipe for detecting the liquid level in the protective guide pipe; a capacitive liquid level sensor arranged at the upper end of the protective guide pipe for detecting the liquid level in the protective guide pipe; The pressure type liquid level sensor and the capacitive liquid level sensor are electrically connected with a server respectively, and are used for uploading the detection values to the server.

3. The heavy oil separator anti-sticking self-heating liquid level meter according to claim 1, characterized in that, The application further comprises: a thimble arranged at the bottom of the floating ball for abutting against the lower end surface of the protective guide pipe; The length of the thimble is greater than the distance between the lower end of the second connecting pipe and the lower end surface of the protective guide pipe.

4. The heavy oil separator anti-sticking self-heating liquid level meter according to claim 1, characterized in that: The floating ball is composed of a pair of oppositely buckled floating ball bodies; the floating ball is made of non-magnetic hard copper alloy containing 14.5%-17.5% of chromium and 14%-17% of molybdenum.

5. The heavy oil separator anti-sticking self-heating liquid level meter according to claim 1, characterized in that: A fluorescent layer is arranged at the outer periphery of the upper part of the floating ball; the fluorescent layer can display red / green light waves after being excited by ultraviolet / blue light, so that the floating ball has high recognition; the fluorescent layer contains 0.69%-4.3% of europium and 47.7%-48.31% of terbium.

6. The heavy oil separator anti-sticking self-heating level gauge according to claim 1, characterized in that: A heat-sensitive coating layer is arranged at the outer periphery of the lower part of the floating ball; when the temperature reaches a specific threshold value, the heat-sensitive coating layer presents color change, so as to intuitively display the threshold value of the temperature generated by the floating ball due to self-heating.

7. The heavy oil separator anti-sticking self-heating liquid level meter according to claim 3, characterized in that: A plurality of detachably connected counterweights are arranged at the inner periphery of the bottom of the floating ball for adjusting the weight of the floating ball.

8. The heavy oil separator anti-sticking self-heating liquid level meter according to claim 1, characterized in that: The arc-shaped strong magnets are arranged on the outer wall of the protective guide pipe in a circular arc type through connecting rods; the arc-shaped strong magnets are permanent magnets or electromagnets.

9. The heavy oil separator anti-sticking self-heating liquid level meter according to claim 1, characterized in that: The protective guide pipe is made of a magnetic conductive material.

10. The heavy oil separator anti-sticking self-heating level gauge according to claim 1, characterized in that, The application further comprises: eddy current heating plates arranged at the upper and lower ends of the high-resistance closed loop heating coil respectively and electrically connected with the high-resistance closed loop heating coil; for generating heat, melting thick oil and preventing the floating ball from being stuck.

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