Wellhead device for monitoring geothermal production well

Abstract

The utility model relates to the technical field of geothermal well wellhead devices, and discloses a wellhead device for geothermal production well monitoring, which comprises a geothermal well and a water taking pipe, a base matched with the geothermal well is sleeved on the water taking pipe and is in interference fit connection with the water taking pipe, and the base is positioned at the top of the geothermal well. The two sides of the water taking pipe symmetrically communicate with water inlet pipes, one end of each water inlet pipe is provided with a blowout prevention box, the two sides of each blowout prevention box are provided with a water inlet hole and a water drainage hole correspondingly, and a baffle is arranged in each blowout prevention box. Through the arrangement of the blowout prevention box, when blowout occurs in the geothermal well, blowout water impacts the rubber pad and the baffle through the water inlet pipe, the baffle slides along the transverse shaft and extrudes the spring, blocking of the water inlet hole by the rubber pad is relieved, and the blowout water is smoothly discharged through the drainage hole and the drainage pipe; and the situation that the water taking pipe is damaged due to overlarge blowout water pressure is prevented, and the service life of the whole wellhead device is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to geothermal well mouth device technical field, concretely is a well mouth device for geothermal production well monitoring. BACKGROUND

[0002] Geothermal production well is geothermal well, refers to the geothermal energy or water temperature more than 30 DEG C hot spring water to carry out power generation's method and device, geothermal is divided into high temperature, medium temperature and low temperature three kinds, generally in order to make full use of the energy in geothermal well, need to install well mouth device at geothermal well mouth, carry out energy monitoring and utilization to geothermal well.

[0003] The patent document with the announcement number CN207436987U has been published, and the well mouth device for geothermal production well monitoring is disclosed, the patent document is simple in structure, convenient to install, integrates water pumping, downhole and outlet parameter monitoring functions, can improve operation efficiency and reduce production cost, but the thermal reservoir formation around geothermal well is prone to leakage problem, and then gushing may occur, so that blowout occurs in geothermal well, and the above-mentioned published patent document does not have the protection and automatic discharge function for blowout water, so that the pipe is damaged by blowout water under excessive pressure, and the service life of the well mouth device is reduced. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a well mouth device for geothermal production well monitoring, which solves the problem in the background art.

[0005] The application embodiment provides a well mouth device for geothermal production well monitoring, which comprises a geothermal well and a water taking pipe, a base matched with the geothermal well is sleeved and interference fit connected on the water taking pipe, the base is located at the top of the geothermal well, water inlet pipes are symmetrically connected to the two sides of the water taking pipe, a blowout prevention box is arranged at one end of the water inlet pipe, water inlet holes and water outlet holes are respectively arranged on the two sides of the blowout prevention box, and a baffle is arranged in the blowout prevention box, the water inlet holes are communicated with the water inlet pipes, a rubber pad is fixedly connected to one side of the baffle, two horizontal shafts are penetratingly and slidably connected to the baffle, the diameter of the rubber pad is greater than that of the water inlet holes, and the rubber pad is in contact with the water inlet holes, the two ends of the horizontal shafts are fixedly installed with the inner walls of the two sides of the blowout prevention box, and springs are sleeved on the horizontal shafts, and the two ends of the springs are fixedly connected with the baffle and the inner wall of the blowout prevention box.

[0006] By adopting the above technical scheme, when blowout occurs in the geothermal well, the blowout water can impact the rubber pad and the baffle through the water inlet pipe, the baffle slides along the horizontal shaft and presses the spring, the rubber pad is unblocked to the water inlet holes, and the blowout water is automatically discharged through the water outlet holes, so that the damage of the water taking pipe caused by excessive blowout water pressure is prevented.

[0007] Optionally, eight groups of mounting reinforcing assemblies are arranged between the geothermal well and the base, each group of the mounting reinforcing assemblies comprises a mounting bolt, a screw rod, an internally threaded sleeve and a connecting piece, the mounting bolt and the screw rod penetrate the connecting piece, the mounting bolt penetrates the geothermal well and the base, and two matched nuts are arranged on the mounting bolt, the internally threaded sleeve is embedded in the ground, and the internally threaded sleeve is matched with the screw rod, the screw rod is threadedly connected with the connecting piece, and the upper end of the screw rod is fixedly provided with a hand wheel.

[0008] By penetrating the mounting bolt through the geothermal well and the base and tightening the two nuts, the installation of the geothermal well and the base is completed, and the lower end of the screw rod is rotated into the internally threaded sleeve embedded in the ground by rotating the screw rod with the hand wheel, so that the geothermal well and the base are installed again.

[0009] Optionally, the upper end of the water taking pipe is communicated with a gate valve.

[0010] By adopting the above technical scheme, whether the geothermal water in the geothermal well flows out can be controlled.

[0011] Optionally, the drainage hole is communicated with a drainage pipe, and one end of the drainage pipe is communicated with a sewer.

[0012] By adopting the above technical scheme, the blowout water can be transported into the sewer.

[0013] Optionally, a support is arranged on the water taking pipe and fixedly connected, two rubber pads are fixedly arranged on the bottom of the blowout preventer tank on the two sides of the support, and a plurality of supports are fixedly arranged between the support and the base.

[0014] By adopting the above technical scheme, the blowout preventer tank is supported to prevent the blowout preventer tank from falling.

[0015] Optionally, matched gaskets are arranged on the mounting bolts.

[0016] By adopting the above technical scheme, the friction between the mounting bolt and the connecting piece is reduced.

[0017] Compared with the prior art, the beneficial effects of the technical scheme of the present application are as follows:

[0018] 1、By arranging the blowout preventer tank, when blowout occurs in the geothermal well, the blowout water impacts the rubber pad and the baffle through the water inlet pipe, the baffle slides along the horizontal axis and presses the spring, the rubber pad is unblocked from the water inlet hole, the blowout water is automatically discharged through the drainage hole and the drainage pipe, the blowout water pressure is prevented from being too large to damage the water taking pipe, and the service life of the entire wellhead device is increased.

[0019] 2, the technical scheme of the application can complete the installation of the geothermal well and the base by passing the mounting bolt through the geothermal well and the base and tightening the two nuts, then rotating the screw rod through the hand wheel, and rotating the lower end of the screw rod into the internal threaded sleeve pipe embedded underground, so as to install and reinforce again around the geothermal well and the base, thereby increasing the strength of the installation and connection between the wellhead device and the wellhead of the geothermal well. BRIEF DESCRIPTION OF DRAWINGS

[0020] Other features, objects and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments, read in conjunction with the accompanying drawings:

[0021] Figure 1 is a structural schematic view of the present application;

[0022] Figure 2 is a front view of the blowout prevention box of the present application;

[0023] Figure 3 is a structural schematic view of a set of installation and reinforcement assemblies of the present application;

[0024] Figure 4 is the present application Figure 3 is an enlarged view of position A in the present application.

[0025] In the figure: 1, geothermal well; 2, base; 3, water taking pipe; 4, water inlet pipe; 5, blowout prevention box; 6, drain pipe; 7, gate valve; 8, installation and reinforcement assembly; 81, mounting bolt; 82, screw rod; 83, internal threaded sleeve pipe; 84, connecting piece; 85, nut; 86, hand wheel; 87, gasket; 9, support; 10, support rod; 11, water inlet hole; 12, drain hole; 13, baffle; 14, rubber pad; 15, cross shaft; 16, spring. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0027] Please refer to Figures 1-2The utility model provides a wellhead device for geothermal production well monitoring, including geothermal well 1 and water taking pipe 3, and water taking pipe 3 is equipped with and has the interference fit connection with the base 2 matched with geothermal well 1, the base 2 is at the top of geothermal well 1, and the both sides of water taking pipe 3 are symmetrically connected with inlet pipe 4, and the one end of inlet pipe 4 is provided with blowout preventer box 5, and the both sides of blowout preventer box 5 are provided with inlet hole 11 and drain hole 12 respectively, and the inside of blowout preventer box 5 is provided with baffle 13, inlet hole 11 is connected with inlet pipe 4, one side of baffle 13 is fixedly connected with rubber pad 14, and two horizontal shafts 15 are slidably connected on baffle 13, the diameter of rubber pad 14 is greater than the diameter of inlet hole 11, and rubber pad 14 is in contact with inlet hole 11, and the both ends of horizontal shaft 15 are fixedly installed with the both sides inner wall of blowout preventer box 5, and spring 16 is equipped with on horizontal shaft 15, and the both ends of spring 16 are fixedly connected with baffle 13 and the inner wall of blowout preventer box 5 respectively.

[0028] In this technical scheme, through the setting of blowout preventer box 5, when blowout occurs in geothermal well 1, the blowout water can impact rubber pad 14 and baffle 13 through inlet pipe 4, baffle 13 slides along horizontal shaft 15 and extrudes spring 16, the blockage of rubber pad 14 to inlet hole 11 is removed, the blowout water is smoothly and automatically discharged through drain hole 12, the case that the blowout water pressure is too large and the water taking pipe 3 is damaged is prevented, and the service life of the whole wellhead device is increased.

[0029] In some technical schemes, as shown in Figure 1 and Figure 3 , eight groups of installation reinforcing components 8 are arranged between geothermal well 1 and base 2, each group of installation reinforcing components 8 includes mounting bolt 81, screw rod 82, internal thread sleeve 83 and connecting piece 84, mounting bolt 81 and screw rod 82 are all penetrated in connecting piece 84, mounting bolt 81 is penetrated in geothermal well 1 and base 2, and two nuts 85 matched with mounting bolt 81 are equipped with, internal thread sleeve 83 is embedded in the ground, and internal thread sleeve 83 is matched with screw rod 82, screw rod 82 is threadedly connected with connecting piece 84, and the upper end of screw rod 82 is fixedly installed with hand wheel 86.

[0030] When using, by penetrating mounting bolt 81 through geothermal well 1 and base 2 and tightening two nuts 85, the installation of geothermal well 1 and base 2 can be completed, then by rotating screw rod 82 through hand wheel 86, the lower end of screw rod 82 is rotated into the inside of internal thread sleeve 83 embedded in the ground, and the installation of geothermal well 1 and base 2 around can be reinforced again, and the strength of the installation connection between the wellhead device and the wellhead of geothermal well 1 is increased.

[0031] In some technical schemes, as shown in Figure 1 , the upper end of water taking pipe 3 is connected with gate valve 7.

[0032] In use, the geothermal water in the geothermal well 1 can be controlled to flow out through the switch gate valve 7.

[0033] In some technical solutions, as shown in Figures 1-2 The drain hole 12 is communicated with the drain pipe 6, and one end of the drain pipe 6 is communicated with a sewer.

[0034] In use, the well blowout water can be transported to the sewer through the drain pipe 6.

[0035] In some technical solutions, as shown in Figure 1 The bracket 9 is fixedly connected on the water taking pipe 3, and the two sides of the bracket 9 are fixedly installed at the bottom of the two blowout preventer boxes 5. A plurality of supporting rods 10 are fixedly installed between the bracket 9 and the base 2.

[0036] In use, the bracket 9 and the supporting rods 10 support the blowout preventer boxes 5 to prevent the blowout preventer boxes 5 from falling down.

[0037] In some technical solutions, as shown in Figure 3 and Figure 4 The matching gasket 87 is sleeved on the mounting bolt 81.

[0038] In use, the gasket 87 reduces the friction between the mounting bolt 81 and the connecting piece 84.

[0039] Working principle: in the installation process, first, the mounting bolt 81 is screwed through the geothermal well 1 and the base 2, and then the screw rod 82 is rotated through the hand wheel 86, so that the lower end of the screw rod 82 is screwed into the internal threaded sleeve pipe 83 buried underground. Thus, the geothermal well 1 and the base 2 can be installed and reinforced again, and the strength of the installation and connection between the wellhead device and the wellhead of the geothermal well 1 is increased. In use, when the well blowout water appears, the blowout preventer box 5 can make the well blowout water impact the rubber pad 14 and the baffle 13 through the water inlet pipe 4. The baffle 13 slides along the horizontal shaft 15 and presses the spring 16, so that the rubber pad 14 is unblocked from the water inlet hole 11. The well blowout water is smoothly and automatically discharged through the drain hole 12 and the drain pipe 6, so that the well blowout water pressure is prevented from being too large to damage the water taking pipe 3, and the service life of the entire wellhead device is increased.

[0040] The above only describes the preferred embodiments of the present application, and is not used to limit the present application. Although the present application is described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements to some technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A wellhead arrangement for geothermal production well monitoring, comprising a geothermal well (1) and a water take-off pipe (3), characterized in that: The water taking pipe (3) is sleeved with the base (2) matched with the geothermal well (1) and is connected by interference fit, the base (2) is at the top of the geothermal well (1), the water taking pipe (3) is symmetrically communicated with the water inlet pipe (4) on both sides, the water inlet pipe (4) is provided with the blowout preventer box (5) at one end, the blowout preventer box (5) is provided with the water inlet hole (11) and the drainage hole (12) on both sides respectively, and the inside of the blowout preventer box (5) is provided with the baffle (13), the water inlet hole (11) is communicated with the water inlet pipe (4), one side of the baffle (13) is fixedly connected with the rubber pad (14), and the baffle (13) is penetrated and slidably connected with two horizontal shafts (15), the diameter of the rubber pad (14) is greater than the diameter of the water inlet hole (11), and the rubber pad (14) is in contact with the water inlet hole (11), the two ends of the horizontal shaft (15) are fixedly installed with the two side inner walls of the blowout preventer box (5), and the spring (16) is sleeved on the horizontal shaft (15), the two ends of the spring (16) are fixedly connected with the baffle (13) and the inner wall of the blowout preventer box (5).

2. A wellhead apparatus for monitoring a geothermal production well as defined in claim 1, characterised in that, Eight groups of mounting reinforcing components (8) are arranged between the geothermal well (1) and the base (2), each group of the mounting reinforcing components (8) comprises a mounting bolt (81), a screw rod (82), an internally threaded sleeve (83) and a connecting piece (84), the mounting bolt (81) and the screw rod (82) are both penetrated through the connecting piece (84), the mounting bolt (81) is penetrated through the geothermal well (1) and the base (2), and two matched nuts (85) are sleeved on the mounting bolt (81), the internally threaded sleeve (83) is embedded underground, and the internally threaded sleeve (83) is matched with the screw rod (82), the screw rod (82) is threadedly connected with the connecting piece (84), and the upper end of the screw rod (82) is fixedly installed with a hand wheel (86).

3. A wellhead apparatus for monitoring a geothermal production well as defined in claim 1, wherein, The upper end of the water taking pipe (3) is communicated with a gate valve (7).

4. A wellhead apparatus for monitoring a geothermal production well as defined in claim 1, wherein, The drainage hole (12) is communicated with a drainage pipe (6), and one end of the drainage pipe (6) is communicated with a sewer.

5. A wellhead apparatus for monitoring a geothermal production well as defined in claim 1, wherein, A support (9) is sleeved and fixedly connected on the water taking pipe (3), two sides of the support (9) are fixedly installed with two blowout preventer boxes (5) at the bottom, a plurality of supporting rods (10) are fixedly installed between the support (9) and the base (2).

6. A wellhead apparatus for monitoring a geothermal production well as defined in claim 2, wherein, A gasket (87) is sleeved on the mounting bolt (81).

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