A natural gas pressure pipeline anti-freezing and blocking device

Abstract

The present invention relates to the technical field of antifreeze of pressure pipelines, and specifically to a natural gas pressure pipeline antifreeze blocking device; comprising: a heating pump; the heating pump can circulate, discharge and inhale a liquid medium, and heat the medium inside the heating pump; a water inlet pipe; one end of the water inlet pipe is fixedly connected to the bottom of the heating pump and is communicated with the interior of the heating pump; a water outlet pipe; one end of the water outlet pipe is fixedly connected to the top of the heating pump and is communicated with the interior of the heating pump; a controller; the controller is used to control the automatic operation of the antifreeze blocking device; the natural gas pressure pipeline antifreeze blocking device also includes: an antifreeze belt; the antifreeze belt is made of flexible material; the antifreeze belt wraps the pressure pipeline; an antifreeze cavity; the present invention heats the liquid medium through the heating pump and then transfers the heat to the pressure pipeline through the antifreeze belt, thereby avoiding the pressure pipeline from freezing and blocking under high-pressure and low-temperature conditions, thereby ensuring the normal use of the pressure measuring instrument.

Description

Technical Field

[0001] The invention relates to the technical field of antifreeze for pressure-leading pipelines, in particular to an antifreeze and blocking device for natural gas pressure-leading pipelines. Background Art

[0002] Pressure lines are used to transmit the internal pressure of equipment and systems to a pressure gauge or pressure sensor, or to measure flow through an orifice plate. The differential pressure across different pressure lines is then fed to the sensor, where it is converted into flow and the signal is transmitted to the control system. These lines are widely used in the instrumentation industry, connecting pressure gauges during natural gas production.

[0003] The pressure-supply pipeline is connected to the exhaust manifold or gas storage tank, and the other end of the pressure-supply pipeline is connected to the pressure meter, which is installed in the control room. The moisture in the pressure-supply pipeline under high-pressure and low-temperature environment can easily produce natural gas hydrates at the end elbow, causing the pipeline to freeze and block, and then causing the instrument display to fail.

[0004] In view of this, in order to overcome the above technical problems, the present invention proposes a natural gas pressure pipeline anti-freezing and blocking device, which solves the above technical problems. Summary of the Invention

[0005] In order to make up for the shortcomings of the existing technology, the present invention proposes a natural gas pressure pipeline anti-freezing and blocking device. The present invention heats the liquid medium through a heating pump and then transfers the heat to the pressure pipeline through an anti-freezing belt, thereby avoiding the pressure pipeline from freezing and blocking in a high-pressure and low-temperature environment, thereby ensuring the normal use of the pressure measuring instrument. More importantly, the present application can achieve anti-freezing and blocking of the existing pressure pipeline through an external device without disassembling the existing pressure pipeline, which is easy to use.

[0006] The technical solution adopted by the present invention to solve the technical problem is: a natural gas pressure pipeline anti-freezing and blocking device according to the present invention comprises:

[0007] Heating pump; the heating pump can circulate, discharge and inhale the liquid medium and heat the medium inside the heating pump; the heating energy can be natural gas or electricity; the heating pump is fixedly connected to one side of the pressure pipeline through a bracket;

[0008] Water inlet pipe; one end of the water inlet pipe is fixedly connected to the bottom of the heating pump and is connected to the interior of the heating pump;

[0009] A water outlet pipe; one end of the water outlet pipe is fixedly connected to the top of the heating pump and is connected to the interior of the heating pump;

[0010] Controller; the controller is used to control the automatic operation of the anti-freeze blocking device;

[0011] The natural gas pressure pipeline anti-freezing and blocking device also includes:

[0012] Antifreeze belt; the antifreeze belt is made of flexible material, and the antifreeze belt is made of high temperature resistant material; the antifreeze belt wraps the pressure pipeline;

[0013] Antifreeze chamber; the antifreeze chamber is arranged inside the antifreeze belt; the upper end of the antifreeze chamber is fixedly connected and communicated with the other end of the water outlet pipe; the lower end of the antifreeze chamber is fixedly connected and communicated with the other end of the water inlet pipe;

[0014] A winding box; the winding box is strip-shaped; the winding box is connected to the outside of the antifreeze belt; the winding box is provided with a winding rod extending through the length direction of the winding box; the winding rod is rotatably connected to the winding box; one end of the winding rod is fixedly connected to a screw block, and the other end is threadedly connected to a nut; the other end of the winding rod is provided with an external thread;

[0015] No. 1 wire rope; one end of the No. 1 wire rope is connected to one end of the antifreeze belt, and the other end passes around the other end of the antifreeze belt and passes through the winding box, and is then wound around the winding rod.

[0016] Preferably, an adjustment hole is provided through the outer wall of the winding box; an adjustment rod is provided in the adjustment hole; one end of the adjustment rod extends into the winding box; a through hole is provided through one end of the adjustment rod; the other end of the No. 1 wire rope passes through the through hole and is wound around the winding rod.

[0017] Preferably, a slide groove is provided on the end face of the winding box away from the nut; the slide groove is bar-shaped; the slide groove is connected to the adjustment hole; a rack is slidably connected in the slide groove; one end of the rack is connected to the bottom of the slide groove by a spring No. 1, and the other end extends out of the slide groove; the adjustment rod is located on the outer wall of the adjustment hole and is fixedly connected to a gear; the gear is engaged with the rack.

[0018] Preferably, the cross section of the screw block is circular; the screw block is tilted on a side close to the nut; and one end of the rack contacts one side of the screw block under the elastic force of the No. 1 spring.

[0019] Preferably, the hole wall of the adjustment hole is provided with threads; the outer wall of the adjustment rod is provided with threads; and the adjustment rod is threadedly connected to the adjustment hole.

[0020] Preferably, one end of the antifreeze belt is fixedly connected to the No. 2 wire rope; the other end of the No. 2 wire rope is reversely passed around the outside of the antifreeze belt and passed through the winding box, and then wound around the winding rod.

[0021] Preferably, the No. 2 wire rope and the No. 1 wire rope are alternately arranged in the length direction of the winding box.

[0022] Preferably, a No. 1 hole and a No. 2 hole are provided on both sides of the winding box; a strip groove is provided on the end face of the winding box away from the twisting block; one of the strip grooves is connected to the No. 1 hole, and the other strip groove is connected to the No. 2 hole; a hole plate is slidably connected in the strip groove; the hole plate and the bottom of the strip groove are connected by a No. 2 spring; the No. 2 spring presses the hole plate against the end face of the nut; the hole plate is a plate with a hole; the other end of the No. 1 wire rope passes through the No. 1 hole and one of the holes on the hole plate and is then wound around the winding rod; the other end of the No. 2 wire rope passes through the No. 2 hole and the other hole on the hole plate and is then wound around the winding rod.

[0023] The beneficial effects of the present invention are as follows:

[0024] 1. The present invention heats the liquid medium through a heating pump and then transfers the heat to the pressure pipeline through an antifreeze belt, thereby preventing the pressure pipeline from freezing and blocking in a high-pressure and low-temperature environment, thereby ensuring the normal use of the pressure measuring instrument. More importantly, the present application can prevent the existing pressure pipeline from freezing and blocking through external devices without disassembling the existing pressure pipeline, which is easy to use.

[0025] 2. The present invention drives the rack to slide back and forth in the slide groove by rotating the twist block in conjunction with the No. 1 spring. During the back and forth movement of the rack, the direction of the through hole on the adjusting rod will change back and forth, so that the other end of the No. 1 wire rope will be wound up by the winding rod after the direction changes, thereby avoiding the situation where the other end of the No. 1 wire rope is wound up at the same position on the winding rod and caused to get stuck, thereby ensuring the stable installation of the anti-freeze blocking device.

[0026] 3. In the present invention, the No. 1 wire rope will be wrapped around the adjusting rod after the adjusting rod is rotated, so that the length of each unfolded No. 1 wire rope can be adjusted individually. In this way, when the antifreeze belt is tied to the curved pressure pipeline, the antifreeze belt can fit better with the curved pressure pipeline, thereby better transferring heat. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0028] Figure 1 is a perspective view of the present invention;

[0029] Figure 2 It is a three-dimensional diagram of the present invention from another angle;

[0030] Figure 3 It is a three-dimensional diagram of the first embodiment of the winding box of the present invention;

[0031] Figure 4 yes Figure 3 Enlarged view of point A in the middle;

[0032] Figure 5 It is a perspective view of a second embodiment of the winding box of the present invention;

[0033] Figure 6 yes Figure 5 Enlarged view of point B in the middle;

[0034] Figure 7 It is a structural diagram of the third embodiment of the winding box in the present invention.

[0035] In the figure: heating pump 1, water inlet pipe 11, water outlet pipe 12, antifreeze belt 2, antifreeze chamber 21, winding box 3, adjusting hole 31, adjusting rod 32, through hole 33, slide groove 34, rack 35, No. 1 spring 36, gear 37, No. 1 hole 38, No. 2 hole 39, strip groove 3a, winding rod 4, screw block 41, nut 42, No. 1 wire rope 5, No. 2 wire rope 6, orifice plate 7, No. 2 spring 71. DETAILED DESCRIPTION

[0036] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0037] like Figures 1 to 7 As shown, the natural gas pressure pipeline anti-freezing and blocking device of the present invention comprises:

[0038] Heating pump 1; the heating pump 1 can circulate, discharge and inhale the liquid medium and heat the medium inside the heating pump 1; the heating energy can be natural gas or electricity; the heating pump 1 is fixedly connected to one side of the pressure pipeline through a bracket;

[0039] Water inlet pipe 11; one end of the water inlet pipe 11 is fixedly connected to the bottom of the heating pump 1 and communicates with the interior of the heating pump 1;

[0040] A water outlet pipe 12; one end of the water outlet pipe 12 is fixedly connected to the top of the heating pump 1 and communicates with the interior of the heating pump 1;

[0041] Controller; the controller is used to control the automatic operation of the anti-freeze blocking device;

[0042] The natural gas pressure pipeline anti-freezing and blocking device also includes:

[0043] Antifreeze belt 2; the antifreeze belt 2 is made of a flexible material, and the antifreeze belt 2 is made of a high-temperature resistant material; the antifreeze belt 2 wraps the pressure pipeline;

[0044] Antifreeze chamber 21; the antifreeze chamber 21 is arranged inside the antifreeze belt 2; the upper end of the antifreeze chamber 21 is fixedly connected and communicated with the other end of the water outlet pipe 12; the lower end of the antifreeze chamber 21 is fixedly connected and communicated with the other end of the water inlet pipe 11;

[0045] The winding box 3 is strip-shaped; the winding box 3 is connected to the outside of the antifreeze belt 2; the winding box 3 is provided with a winding rod 4 running through the length direction of the winding box 3; the winding rod 4 is rotatably connected to the winding box 3; one end of the winding rod 4 is fixedly connected to the screw block 41, and the other end is threadedly connected to the nut 42; the other end of the winding rod 4 is provided with an external thread;

[0046] One end of the No. 1 wire rope 5 is connected to one end of the antifreeze belt 2, and the other end is wound around the other end of the antifreeze belt 2 and passes through the winding box 3, and then wound around the winding rod 4;

[0047] During operation, the pressure-supply pipeline is connected to the exhaust manifold or gas storage tank, and the other end of the pressure-supply pipeline is connected to the pressure meter, which is installed in the control room. However, under high pressure and low temperature conditions, the moisture in the pressure-supply pipeline can easily produce natural gas hydrates at the end elbow, causing the pipeline to freeze and block, and then causing instrument display failure.

[0048] Therefore, the staff of the present invention will add an anti-freeze blocking device for the pressure-conducting pipeline that has cold blockage. First, the No. 1 wire rope 5, the winding box 3, and the anti-freeze belt 2 are stretched out, and then put over the pressure measuring instrument and moved to the outer wall of the pressure-conducting pipeline that needs to be prevented from cold blockage. Then, the screw block 41 is rotated, and the screw block 41 drives the winding rod 4 to rotate. The rotating winding rod 4 will reel in the other end of the No. 1 wire rope 5. After the other end of the No. 1 wire rope 5 is pulled and reeled, the unfolded length of the No. 1 wire rope 5 is shortened. Then, one end of the No. 1 wire rope 5 drives one end of the anti-freeze belt 2 to be tightened, and the winding box 3 is connected to the outside of the anti-freeze belt 2, so the tensioning of the No. 1 wire rope 5 can The antifreeze belt 2 is tied tightly to the outer wall of the pressure-conducting pipeline, and then the nut 42 is tightened so that the nut 42 contacts the reel-up box 3 after being twisted. The static friction between the nut 42 and the reel-up box 3 is used to lock the reel-up rod 4, thereby preventing the antifreeze belt 2 from loosening due to the rotation of the reel-up rod 4, thereby ensuring the stability of the antifreeze belt 2 tied to the pressure-conducting pipeline. Finally, the heating pump 1 is fixed to one side of the pressure-conducting pipeline, and the addition of an antifreeze blockage device to the existing pressure-conducting pipeline is completed. Compared with the antifreeze blockage method of the prior art, the present application does not require the disassembly and replacement of the original pressure-conducting pipeline. It only needs to be installed externally to achieve the purpose of preventing freeze blockage. The antifreeze blocking device can also be disassembled and replaced as needed; after the controller senses that the ambient temperature is lower than the preset temperature, the controller will start the heating pump 1, and the heating pump 1 will heat the liquid medium inside. After the liquid medium is heated to the preset temperature, it will be discharged along the outlet pipe 12, and the liquid discharged from the outlet pipe 12 will enter the antifreeze chamber 21. Since the antifreeze belt 2 wraps the pressure pipeline, the heat of the liquid medium inside the antifreeze chamber 21 will be transferred to the pressure pipeline, causing the pressure pipeline to heat up, avoiding the pressure pipeline from being blocked by freezing due to the low temperature of the pressure pipeline, and the temperature of the liquid medium in the antifreeze chamber 21 will be increased after the heat is transferred away. The liquid medium flows down along the water inlet pipe 11 and flows back to the inside of the heating pump 1. The heating pump 1 heats the liquid medium again and flows the heated liquid medium into the antifreeze chamber 21, thereby preventing the pressure pipeline from being blocked by cold. The operation of the heating pump 1 is stopped after the controller detects that the ambient temperature is lower than the preset temperature. The temperature monitored by the controller in this application can be understood as the temperature of the pressure pipeline or the temperature of the surrounding air, which can meet the purpose of preventing the pressure pipeline from being blocked by cold. The No. 1 wire rope 5 cooperates with the winding action of the winding box 3 to bundle pressure pipelines of different diameters, so it is possible to prevent pressure pipelines of different diameters from being blocked by freezing.

[0049] The present invention heats the liquid medium through the heating pump 1 and then transfers the heat to the pressure pipeline through the antifreeze belt 2, thereby preventing the pressure pipeline from freezing and blocking in a high-pressure and low-temperature environment, thereby ensuring the normal use of the pressure measuring instrument. More importantly, the present application can prevent the existing pressure pipeline from freezing and blocking through external devices without disassembling the existing pressure pipeline, which is easy to use.

[0050] As an embodiment of the present invention, an adjustment hole 31 is formed through the outer wall of the winding box 3; an adjustment rod 32 is provided in the adjustment hole 31; one end of the adjustment rod 32 extends into the winding box 3; one end of the adjustment rod 32 is formed through a through hole 33; the other end of the No. 1 wire rope 5 passes through the through hole 33 and is then wound around the winding rod 4;

[0051] When the cam 32 is in the working state, the cam 32 is rotated to move the cam 33 so that the cam 33 is in the working state, and the cam 33 is rotated to move the cam 33 so that the cam 33 is in the working state.

[0052] As an embodiment of the present invention, a slide groove 34 is provided on one end surface of the winding box 3 away from the nut 42; the slide groove 34 is bar-shaped; the slide groove 34 is connected to the adjustment hole 31; a rack 35 is slidably connected to the slide groove 34; one end of the rack 35 is connected to the bottom of the slide groove 34 by a No. 1 spring 36, and the other end extends out of the slide groove 34; the adjustment rod 32 is located on the outer wall of the adjustment hole 31 and is fixedly connected to a gear 37; the gear 37 is meshed with the rack 35;

[0053] During operation, when the staff member twists the winding rod 4 to reel in the other end of the No. 1 line rope 5, the staff member presses the rack 35 so that the rack 35 is pressed and moves close to the bottom of the slide groove 34. The movement of the rack 35 drives the meshing gear 37 to rotate, and the rotating gear 37 drives the adjusting rod 32 to rotate. The adjusting rod 32 is rotatably connected to the adjusting hole 31. The adjusting hole 31 is to provide enough movement space for the gear 37. The adjusting rod 32 rotates under the drive of the gear 37. The rotation of the adjusting rod 32 will change the position of the other end of the No. 1 line rope 5 during the reeling process. The position and angle, as the staff releases the rack 35, the rack 35 will move along the slide 34 and away from the bottom of the slide 34 under the elastic force of the No. 1 spring 36. The rack 35 will drive the gear 37 to rotate during the movement, and the rotation of the gear 37 will drive the adjusting rod 32 to rotate again, so that the adjusting rod 32 changes the direction of the through hole 33 again; compared with the original embodiment, this embodiment can drive all the adjusting rods 32 to rotate by pressing the gear 37, so that the winding direction of the other end of all the No. 1 ropes 5 can be changed, and the operation is more convenient than before.

[0054] As an embodiment of the present invention, the cross section of the screw block 41 is circular; the screw block 41 is tilted on a side close to the nut 42; one end of the rack 35 contacts a side of the screw block 41 under the elastic force of the No. 1 spring 36;

[0055] During operation, when the staff turns the screw block 41 to drive the winding rod 4 to rotate, the screw block 41 will drive the side close to the nut 42 to rotate. Since one side of the screw block 41 is set at an angle, the screw block 41 will intermittently squeeze the rack 35, and the No. 1 spring 36 always pushes one end of the rack 35 to contact the inclined side of the screw block 41. Therefore, the rotation of the screw block 41 and the elastic force of the No. 1 spring 36 can realize the reciprocating sliding of the rack 35 in the slide groove 34. The back and forth movement of the rack 35 will drive the direction of the through hole 33 on the adjusting rod 32 to change back and forth, so that the staff only needs to twist the screw block 41 to achieve a series of actions, which further facilitates use.

[0056] As an embodiment of the present invention, the hole wall of the adjustment hole 31 is provided with a thread; the outer wall of the adjustment rod 32 is provided with a thread; the adjustment rod 32 is threadedly connected to the adjustment hole 31;

[0057] When the adjusting rod 32 is rotated, the adjusting hole 31 is rotated, and the adjusting rod 32 is rotated. The rotating adjusting rod 32 drives the corresponding through hole 33 to rotate. Since the other end of the No. 1 wire rope 5 is inserted into the through hole 33, the No. 1 wire rope 5 is wound around the adjusting rod 32 after the adjusting rod 32 is rotated, so that the length of each unfolded No. 1 wire rope 5 can be adjusted individually. When the antifreeze belt 2 is tied to the curved pressure-inducing pipeline, the antifreeze belt 2 can fit the curved pressure-inducing pipeline better, thereby better transmitting heat. At the same time, the No. 1 wire rope 5 is wound around the adjusting rod 32 to achieve the purpose of secondary locking in the winding box 3, further improving the stability of the No. 1 wire rope 5 being locked. Since the adjusting rod 32 is threadedly connected to the adjusting hole 31, it can stop at any angle after the thread transmission, realizing self-locking.

[0058] As an embodiment of the present invention, one end of the antifreeze belt 2 is fixedly connected to the second wire rope 6; the other end of the second wire rope 6 is reversely passed around the outside of the antifreeze belt 2 and passed through the winding box 3, and then wound around the winding rod 4;

[0059] During operation, the winding rod 4 will reel in the No. 1 wire rope 5 during the rotation process, and the other end of the No. 2 wire rope 6 will also be reeled in during the rotation process of the winding rod 4. The No. 2 wire rope 6 is wound around the outside of the antifreeze belt 2, so after the No. 2 wire rope 6 is reeled in, the outside of the antifreeze belt 2 can be tightened, so that the antifreeze belt 2 can better fit the pressure pipeline, so that the heat transfer effect is better. At the same time, through the setting of the No. 2 wire rope 6, the position of the winding box 3 will change during the process of reeling in the No. 1 wire rope 5, so that one end of the antifreeze belt 2 can be placed on the outside of the other end of the antifreeze belt 2 and then continue to be tightened, so that the antifreeze belt 2 can be bundled for pressure pipelines with smaller diameters, thereby expanding the scope of application of the antifreeze blocking device.

[0060] As an embodiment of the present invention, the second wire rope 6 and the first wire rope 5 are alternately arranged in the length direction of the winding box 3;

[0061] During operation, the No. 1 line 5 and the No. 2 line 6 will tighten the antifreeze belt 2 after the winding rod 4 is tightened, thereby squeezing the antifreeze chamber 21, causing the antifreeze chamber 21 to be flattened, and by alternating the No. 2 line 6 and the No. 1 line 5, the antifreeze chamber 21 is flattened in an alternating manner, so that the liquid medium can flow smoothly in the antifreeze chamber 21, and at the same time, the liquid medium flows in the antifreeze chamber 21 along the S-shaped movement, thereby expanding the flow range of the liquid medium in the antifreeze chamber 21, and achieving better heat transfer effect; at the same time, alternating the No. 2 line 6 and the No. 1 line 5 is also conducive to the winding of the winding rod 4, avoiding the accumulation and interference of the wound ends of the No. 1 line 5 and the No. 2 line 6 at the same position in the winding box 3, ensuring the stable operation of the No. 1 line 5 and the No. 2 line 6.

[0062] As an embodiment of the present invention, a No. 1 hole 38 and a No. 2 hole 39 are provided on both sides of the winding box 3; a strip groove 3a is provided on the end face of the winding box 3 away from the twisting block 41; one of the strip grooves 3a is connected to the No. 1 hole 38, and the other strip groove 3a is connected to the No. 2 hole 39; a hole plate 7 is slidably connected in the strip groove 3a; the hole plate 7 and the bottom of the strip groove 3a are connected by a No. 2 spring 71; the No. 2 spring 71 presses the hole plate 7 against the end face of the nut 42; the hole plate 7 is a plate with a hole; the other end of the No. 1 wire rope 5 passes through the No. 1 hole 38 and one of the holes on the hole plate 7 and is then wound around the winding rod 4; the other end of the No. 2 wire rope 6 passes through the No. 2 hole 39 and another hole on the hole plate 7 and is then wound around the winding rod 4;

[0063] During operation, before twisting the twist block 41 to drive the winding rod 4 to rotate, first twist the nut 42 to move the nut 42 away from the collecting box. After the nut 42 moves away from the collecting box, the No. 2 spring 71 will drive the orifice plate 7 to move in the corresponding strip groove 3a away from the bottom of the strip groove 3a, so that one of the holes on the orifice plate 7 corresponds to the No. 1 hole 38, and the other hole on the orifice plate 7 corresponds to the No. 2 hole 39, thereby unlocking the No. 1 wire rope 5 and the No. 2 wire rope 6. Then, after rotating the winding rod 4 to wind the No. 1 wire rope 5 and the No. 2 wire rope 6, twist the nut 42 again so that the nut 42 moves toward the winding box 3 after twisting, so that the nut 42 approaches the winding box 3 and sticks to the end face of the winding box 3, and the orifice plate 7 is squeezed in the process of the nut 42 approaching the winding box 3. After being squeezed by the nut 42, the orifice plate 7 compresses the corresponding No. 2 spring 71 to complete the force storage process of the No. 2 spring 71, and after being squeezed by the nut 42, the orifice plate 7 will move close to the bottom of the corresponding strip groove 3a, so that the holes on one of the orifice plates 7 are staggered with the No. 1 hole 38, and the holes on the other orifice plate 7 are staggered with the No. 2 hole 39, thereby achieving the purpose of locking the No. 1 wire rope 5 and the No. 2 wire rope 6, and further preventing the No. 1 wire rope 5 and the No. 2 wire rope 6 from loosening after tying the antifreeze belt 2 to the pressure pipeline, and the No. 2 spring 71 will push the orifice plate 7 to give the nut 42 a thrust, so that there is static friction between the orifice plate 7 and the nut 42, and it is also difficult for the nut 42 to loosen, further improving the stability of the antifreeze blocking device after being installed on the pressure pipeline.

[0064] The specific workflow is as follows:

[0065] The staff will add an anti-freeze blocking device to the pressure-conducting pipeline that has cold blocking. First, the No. 1 wire rope 5, the reel box 3, and the anti-freeze belt 2 are stretched out, and then put over the pressure gauge and moved to the outer wall of the pressure-conducting pipeline that needs to be prevented from cold blocking. Then, the screw block 41 is turned, and the screw block 41 drives the reeling rod 4 to rotate. The rotating reeling rod 4 will reel the other end of the No. 1 wire rope 5. After the other end of the No. 1 wire rope 5 is pulled and reeled, the unfolded length of the No. 1 wire rope 5 is shortened. Then, one end of the No. 1 wire rope 5 drives one end of the anti-freeze belt 2 to tighten, and the reel box 3 It is connected to the outside of the antifreeze belt 2, so the tension of the No. 1 wire rope 5 can realize the antifreeze belt 2 being tied tightly to the outer wall of the pressure pipeline, and then the nut 42 is tightened so that the nut 42 contacts the winding box 3 after being twisted, and the static friction between the nut 42 and the winding box 3 is used to lock the winding rod 4, thereby preventing the antifreeze belt 2 from loosening due to the rotation of the winding rod 4, thereby ensuring the stability of the antifreeze belt 2 tied to the pressure pipeline, and finally the heating pump 1 is fixed to one side of the pressure pipeline, thus completing the addition of the antifreeze blockage device to the existing pressure pipeline. Compared with the anti-freezing blocking method of the prior art, the present application does not need to dismantle and replace the original pressure-leading pipeline, and only needs to install an external device to achieve the purpose of preventing freezing and blocking. At the same time, the anti-freezing blocking device can be dismantled and replaced according to needs; after the controller senses that the ambient temperature is lower than the preset temperature, the controller will start the heating pump 1, and the heating pump 1 will heat the liquid medium inside. After the liquid medium is heated to the preset temperature, it will be discharged along the outlet pipe 12, and the liquid discharged from the outlet pipe 12 will enter the antifreezing chamber 21. Since the antifreezing belt 2 wraps the pressure-leading pipeline Therefore, the heat of the liquid medium inside the antifreeze chamber 21 will be transferred to the pressure pipeline, so that the pressure pipeline is heated up, and the pressure pipeline is prevented from being blocked by freezing due to the low temperature of the pressure pipeline. After the heat of the liquid medium in the antifreeze chamber 21 is transferred away, the temperature will drop and flow back to the inside of the heating pump 1 along the water inlet pipe 11. The heating pump 1 heats the liquid medium again and flows the heated liquid medium into the antifreeze chamber 21, thereby avoiding the pressure pipeline from being blocked by cold. When the controller detects that the ambient temperature is lower than the preset temperature, the heating pump 1 stops working.

[0066] When the staff member twists the winding rod 4 to wind up the other end of the No. 1 line rope 5, the No. 1 line rope 5 will produce relative movement with the through hole 33 on the adjusting rod 32, and the through hole 33 serves the purpose of pulling the other end of the No. 1 line rope 5. The through hole 33 can be driven to swing back and forth by pinching the adjusting rod 32 and inserting it back and forth in the adjusting hole 31. The swinging through hole 33 will drive the corresponding No. 1 line rope 5 to swing, so that the No. 1 line rope 5 is wound up by the winding rod 4 in a shaking state; when the staff member twists the winding rod 4 to wind up the other end of the No. 1 line rope 5, the staff member presses the rack 35 so that the rack 35 is pressed and moves near the bottom of the slide groove 34. During the movement of the rack 35, the meshing gear 37 is driven to rotate, and the rotating gear 37 drives the adjusting rod 32 to rotate. The adjusting rod 32 is rotatably connected to the adjusting hole 31. The adjusting hole 31 is to provide enough movement space for the gear 37. The adjusting rod 32 rotates under the drive of the gear 37. The rotation of the gear 32 will change the position and angle of the other end of the No. 1 wire rope 5 during the winding process. As the staff loosens the rack 35, the rack 35 will move along the slide groove 34 and away from the bottom direction of the slide groove 34 under the elastic force of the No. 1 spring 36. During the movement of the rack 35, the gear 37 will rotate, and the rotation of the gear 37 will drive the adjusting rod 32 to rotate again, so that the direction of the through hole 33 on the adjusting rod 32 will be changed again. When the staff twists the screw block 41 to drive the winding rod 4 to rotate, the screw block 41 will drive the side close to the nut 42 to rotate. Since one side of the screw block 41 is inclined, the screw block 41 will intermittently squeeze the rack 35, and the No. 1 spring 36 always pushes one end of the rack 35 to contact the inclined side of the screw block 41. Therefore, the rotation of the screw block 41 cooperates with the elastic force of the No. 1 spring 36 to realize the reciprocating sliding of the rack 35 in the slide groove 34, and the direction of the through hole 33 on the adjusting rod 32 will be driven back and forth during the back and forth movement of the rack 35.

[0067] Among them, after the winding rod 4 is wound to the limit position by twisting the twist block 41, the adjusting rod 32 is then rotated. Since the outer wall of the adjusting rod 32 is provided with a thread, and the hole wall of the adjusting hole 31 is also provided with a thread, the adjusting rod 32 rotates in the adjusting hole 31 during the rotation process, and the rotating adjusting rod 32 drives the corresponding through hole 33 to rotate. Since the other end of the No. 1 wire rope 5 is inserted into the through hole 33, the No. 1 wire rope 5 will be wound around the adjusting rod 32 after the adjusting rod 32 is rotated, so that the length of each unfolded No. 1 wire rope 5 can be adjusted individually;

[0068] Among them, the winding rod 4 will reel in the No. 1 wire rope 5 during the rotation process, and the other end of the No. 2 wire rope 6 will also be reeled in during the rotation process of the winding rod 4. The No. 2 wire rope 6 is wound around the outside of the antifreeze belt 2. Therefore, after the No. 2 wire rope 6 is reeled in, the outside of the antifreeze belt 2 can be tightened, so that the antifreeze belt 2 can better fit the pressure-inducing pipeline, so that the heat transfer effect is better. At the same time, through the setting of the No. 2 wire rope 6, the position of the winding box 3 will change during the process of reeling in the No. 1 wire rope 5, so that one end of the antifreeze belt 2 can be placed on the antifreeze belt 2 After the other end of the outer side is tightened, the No. 1 line rope 5 and the No. 2 line rope 6 will tighten the antifreeze belt 2 after the winding rod 4 is tightened, thereby squeezing the antifreeze cavity 21, so that the antifreeze cavity 21 is flattened, and by alternately arranging the No. 2 line rope 6 and the No. 1 line rope 5, the antifreeze cavity 21 is flattened in an alternating manner, so that the liquid medium can flow smoothly in the antifreeze cavity 21, and at the same time, the liquid medium flows in the antifreeze cavity 21 along the S-shaped movement, thereby expanding the flow range of the liquid medium in the antifreeze cavity 21, making the heat transfer effect better; at the same time, the No. 2 line rope 6 and the No. 1 line rope are arranged alternately. The alternating arrangement of the wire ropes 5 is also beneficial to the winding of the winding rod 4. Before twisting the twist block 41 to drive the winding rod 4 to rotate, first twist the nut 42 to move the nut 42 away from the collection box. After the nut 42 moves away from the collection box, the No. 2 spring 71 will drive the orifice plate 7 to move in the corresponding strip groove 3a away from the bottom of the strip groove 3a, so that one of the holes on the orifice plate 7 corresponds to the No. 1 hole 38, and the other hole on the orifice plate 7 corresponds to the No. 2 hole 39, thereby unlocking the No. 1 wire rope 5 and the No. 2 wire rope 6, and then rotate the winding rod 4 to wind the No. 1 wire rope 5 and the No. 2 wire rope 6. After that, the nut 42 is screwed again, so that the nut 42 moves toward the direction of the winding box 3 after being screwed, so that the nut 42 approaches the winding box 3 and is close to the end face of the winding box 3. In the process of the nut 42 approaching the winding box 3, the orifice plate 7 is squeezed. After being squeezed by the nut 42, the orifice plate 7 compresses the corresponding No. 2 spring 71 to complete the force storage process of the No. 2 spring 71. After being squeezed by the nut 42, the orifice plate 7 moves toward the bottom of the corresponding strip groove 3a, so that one of the holes on the orifice plate 7 is staggered with the No. 1 hole 38, and the hole on the other orifice plate 7 is staggered with the No. 2 hole 39.

[0069] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate directions or positional relationships based on the attached Figure 1The orientation or positional relationship shown is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it cannot be understood as limiting the scope of protection of the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0070] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A natural gas pressure pipeline anti-freezing and blocking device, comprising: A heating pump (1); the heating pump (1) is capable of circulating, discharging, and sucking in a liquid medium, and heating the medium inside the heating pump (1); A water inlet pipe (11); one end of the water inlet pipe (11) is fixedly connected to the bottom of the heating pump (1) and is in communication with the interior of the heating pump (1); A water outlet pipe (12); one end of the water outlet pipe (12) is fixedly connected to the top of the heating pump (1) and is in communication with the interior of the heating pump (1); Controller; the controller is used to control the automatic operation of the anti-freeze blocking device; Characterized in that, the natural gas pressure pipeline anti-freezing and blocking device further comprises: Antifreeze belt (2); the antifreeze belt (2) is made of a flexible material; the antifreeze belt (2) wraps the pressure-inducing pipeline; An antifreeze chamber (21); the antifreeze chamber (21) is arranged inside the antifreeze belt (2); the upper end of the antifreeze chamber (21) is fixedly connected to and communicated with the other end of the water outlet pipe (12); the lower end of the antifreeze chamber (21) is fixedly connected to and communicated with the other end of the water inlet pipe (11); A winding box (3); the winding box (3) is strip-shaped; the winding box (3) is connected to the outside of the antifreeze belt (2); the winding box (3) is provided with a winding rod (4) penetrating the length direction of the winding box (3); the winding rod (4) is rotatably connected to the winding box (3); one end of the winding rod (4) is fixedly connected to the screw block (41), and the other end is threadedly connected to the nut (42); A No. 1 wire rope (5); one end of the No. 1 wire rope (5) is connected to one end of the antifreeze belt (2), and the other end is passed around the other end of the antifreeze belt (2) and passed through the winding box (3), and then wound around the winding rod (4); An adjusting hole (31) is provided through the outer wall of the winding box (3); an adjusting rod (32) is provided in the adjusting hole (31); one end of the adjusting rod (32) extends into the winding box (3); a through hole (33) is provided through one end of the adjusting rod (32); the other end of the No. 1 wire rope (5) passes through the through hole (33) and is then wound around the winding rod (4); A slide groove (34) is provided on one end face of the winding box (3) away from the nut (42); the slide groove (34) is in a bar shape; the slide groove (34) is connected to the adjustment hole (31); a rack (35) is slidably connected in the slide groove (34); one end of the rack (35) is connected to the bottom of the slide groove (34) through a spring (36), and the other end extends out of the slide groove (34); the adjustment rod (32) is located on the outer wall of the adjustment hole (31) and is fixedly connected to a gear (37); the gear (37) is meshed with the rack (35); The cross section of the screw block (41) is circular; the screw block (41) is tilted on one side close to the nut (42); one end of the rack (35) contacts one side of the screw block (41) under the elastic force of the No. 1 spring (36).

2. The natural gas pressure pipeline anti-freezing and blocking device according to claim 1, characterized in that: The hole wall of the adjustment hole (31) is provided with a thread; the outer wall of the adjustment rod (32) is provided with a thread; the adjustment rod (32) is threadedly connected to the adjustment hole (31).

3. The natural gas pressure pipeline anti-freezing and blocking device according to claim 1, characterized in that: One end of the antifreeze belt (2) is fixedly connected to the second wire rope (6); the other end of the second wire rope (6) is reversely passed around the outside of the antifreeze belt (2) and passed through the winding box (3), and then wound around the winding rod (4).

4. A natural gas pressure pipeline anti-freezing and blocking device according to claim 3, characterized in that: The second wire rope (6) and the first wire rope (5) are alternately arranged in the length direction of the winding box (3).

5. The natural gas pressure pipeline anti-freezing and blocking device according to claim 3, characterized in that: A No. 1 hole (38) and a No. 2 hole (39) are provided on both sides of the winding box (3); a strip groove (3a) is provided on one end surface of the winding box (3) away from the twisting block (41); one of the strip grooves (3a) is connected to the No. 1 hole (38), and the other strip groove (3a) is connected to the No. 2 hole (39); a hole plate (7) is slidably connected in the strip groove (3a); the hole plate (7) and the bottom of the strip groove (3a) are connected. The second spring (71) is connected to the orifice plate (7) by pressing the orifice plate (7) against the end face of the nut (42); the orifice plate (7) is a plate with a hole; the other end of the No. 1 wire rope (5) passes through the No. 1 hole (38) and one of the holes on the orifice plate (7) and is then wound around the winding rod (4); the other end of the No. 2 wire rope (6) passes through the No. 2 hole (39) and another hole on the orifice plate (7) and is then wound around the winding rod (4).

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