Capsule type pressure measuring grouting short joint and grouting pipe

Abstract

A capsule-type pressure-measuring grouting short section and a grouting pipe, comprising a sleeve whose two ends are connected to a grouting pipe section, an elastic sleeve being coaxially arranged in the sleeve, and a closed annular elastic deformation zone being formed between the elastic sleeve and an inner wall of the sleeve, a grouting channel being connected to the grouting pipe section being provided at the center of the elastic sleeve, the annular elastic deformation zone being filled with a liquid medium, a detection head of a pressure gauge passing through the sleeve and extending into the annular elastic deformation zone, the utility model avoids direct contact between slurry and the pressure gauge, thereby avoiding blockage of the pressure gauge and increasing the service life of the pressure gauge.

Description

Technical Field

[0001] The utility model relates to the technical field of grouting, in particular to a capsule type pressure measuring grouting short section and a grouting pipe. Background Art

[0002] In the construction of grouting projects, the control system of construction equipment such as grouting pumps needs to collect slurry pressure signals from different operating links through pressure gauges. In the prior art, the pressure gauge is directly installed on the grouting pipe so that the detection head of the pressure gauge is inserted into the grouting pipe to contact the slurry. During the grouting process, the pressure gauge is often blocked, resulting in inaccurate pressure detection, which may cause the grouting pipe to rupture or the pressure gauge to be scrapped. Utility Model Content

[0003] In order to solve the problem of clogging of the pressure gauge in the prior art, the utility model provides a capsule-type pressure measuring grouting short section and a grouting pipe to prevent the slurry from directly contacting the pressure gauge, thereby avoiding clogging of the pressure gauge and increasing the service life of the pressure gauge.

[0004] In order to achieve the above-mentioned purpose, the specific scheme adopted by the utility model is: a capsule-type pressure measuring grouting short section, characterized in that: it includes a sleeve whose two ends are connected to the grouting pipe section, an elastic cylinder is coaxially arranged in the sleeve, and a closed annular elastic deformation zone is formed between the elastic cylinder and the inner wall of the sleeve, a grouting channel connected to the grouting pipe section is provided at the center of the elastic cylinder, the annular elastic deformation zone is filled with liquid medium, and the detection head of the pressure gauge passes through the sleeve and extends into the annular elastic deformation zone.

[0005] As an optimization solution for the above-mentioned capsule-type pressure measuring grouting short section: the two ends of the elastic tube are bent toward the inner wall of the sleeve to form an annular bending portion, and the edge of the annular bending portion is sealed and connected to the inner wall of the sleeve, so that a closed annular elastic deformation zone is formed between the annular bending portion, the elastic tube and the inner wall of the sleeve.

[0006] As another optimization solution of the capsule-type pressure-measuring grouting short joint, a through hole is provided on the outer wall of the sleeve, and the detection head of the pressure gauge passes through the through hole and extends into the annular elastic deformation zone.

[0007] As another optimization scheme of the above-mentioned capsule-type pressure measuring grouting short section: a boss is arranged on the outer wall of the sleeve, the axis of the boss is perpendicular to the axis of the sleeve, a mounting hole connected to the annular elastic deformation zone is opened on the boss, and the detection head of the pressure gauge extends into the annular elastic deformation zone through the mounting hole.

[0008] As another optimization scheme of the above-mentioned capsule-type pressure measuring grouting short section: the sleeve is connected to the grouting pipe section through a connecting pipe, one end of the connecting pipe is fixedly connected to the sleeve, and the other end of the connecting pipe is fixedly connected to the grouting pipe section.

[0009] As another optimization solution of the above-mentioned capsule-type pressure-measuring grouting short joint: the inner side wall of the connecting pipe is provided with an internal thread, and the outer side wall of the grouting pipe section is provided with an external thread matching the internal thread.

[0010] As another optimization solution of the above-mentioned capsule-type pressure-measuring grouting short joint: the connecting pipes at both ends of the sleeve are fixedly connected, and the end surface of the sleeve is pressed against the end surface of the connecting pipe.

[0011] As another optimization solution of the capsule type pressure measuring grouting nipple, an annular convex ring extending toward the inside of the sleeve is provided at one end of the connecting pipe close to the sleeve, and the annular convex ring is in abutment contact with the end of the elastic tube.

[0012] As another optimization solution of the above-mentioned capsule-type pressure-measuring grouting short joint: the liquid medium is oil or water.

[0013] A grouting pipe comprises a plurality of grouting pipe sections and a plurality of grouting short sections coaxially arranged with the grouting pipe sections, wherein the grouting short sections are the above-mentioned capsule-type pressure-measuring grouting short sections.

[0014] Compared with the prior art, the utility model has the following beneficial effects: the utility model provides a capsule-type pressure measuring grouting short section and a grouting pipe. When the slurry passes through the grouting channel, it will cause the deformation of the inner wall of the rubber tube, thereby affecting the pressure of the liquid medium in the annular elastic deformation zone. The pressure gauge obtains the pressure of the slurry by detecting the pressure of the liquid medium in the annular elastic deformation zone, thereby avoiding blockage caused by direct contact between the pressure gauge and the slurry and increasing the service life of the pressure gauge. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of a grouting short section;

[0016] Figure 2 is a partial schematic diagram of the grouting pipe in Example 4;

[0017] Figure numerals: 1. sleeve, 101. boss, 102. mounting hole, 2. elastic cylinder, 201. annular bending portion, 202. grouting channel, 3. annular elastic deformation zone, 4. pressure gauge, 5. connecting pipe, 501. annular convex ring, 502. fixing bolt, 503. fixing nut, 6. grouting pipe section. DETAILED DESCRIPTION

[0018] The technical solution of the present invention is further elaborated in detail below in conjunction with specific embodiments. The parts of the present invention that are not described and disclosed in detail in the following embodiments should be understood as the prior art known or should be known to those skilled in the art.

[0019] Example 1

[0020] A capsule type pressure measuring grouting nipple comprises a sleeve 1 whose two ends are connected to a grouting pipe section 6, the sleeve 1 is a circular tubular structure, the inner diameter of the sleeve 1 is greater than or equal to the outer diameter of the grouting pipe section 6, when the inner diameter of the sleeve 1 is equal to the outer diameter of the grouting pipe section 6, the connection mode between the sleeve 1 and the grouting pipe section 6 is a threaded connection, that is, an internal thread is arranged near the end of the sleeve 1, and an external thread matching the internal thread is arranged at the end of the grouting pipe section 6; when the inner diameter of the sleeve 1 is greater than the diameter of the grouting pipe section 6, the sleeve 1 is connected to the grouting pipe section 6 through a connecting pipe 5, one end of the connecting pipe 5 is fixedly connected to the sleeve 1, and the other end of the connecting pipe 5 is fixedly connected to the grouting pipe section 6. In this embodiment, the sleeve 1 and the grouting pipe section 6 are connected through the connecting pipe 5, specifically, the inner diameter of the connecting pipe 5 is equal to the outer diameter of the grouting pipe section 6, the inner side wall of the connecting pipe 5 is arranged with an internal thread, and the end of the grouting pipe section 6 is arranged with an external thread matching the internal thread.

[0021] An elastic tube 2 is coaxially arranged inside the sleeve 1, so that a closed annular elastic deformation zone 3 is formed between the elastic tube 2 and the inner wall of the sleeve 1. The center of the elastic tube 2 has a grouting channel 202 connected to the grouting pipe section 6. The annular elastic deformation zone 3 is filled with liquid medium, and the detection head of the pressure gauge 4 passes through the sleeve 1 and extends into the annular elastic deformation zone 3.

[0022] Specifically, the inner diameter of the elastic tube 2 is equal to the outer diameter of the grouting pipe section 6, and the outer diameter of the elastic tube 2 is smaller than the inner diameter of the sleeve 1, that is, there is a certain distance between the outer wall of the elastic tube 2 and the inner wall of the sleeve 1; the material of the elastic tube 2 is rubber. The two ends of the elastic tube 2 are bent toward the inner wall of the sleeve 1 to form an annular bending portion 201, that is, the elastic tube 2 is a dumbbell-shaped structure, and the outer diameter of the annular bending portion 201 is equal to the inner diameter of the sleeve 1, so that the edge of the annular bending portion 201 is sealed and connected with the inner wall of the sleeve 1, and a closed annular elastic deformation zone 3 is formed between the annular bending portion 201, the elastic tube 2 and the inner wall of the sleeve 1. The liquid medium filled in the annular elastic deformation zone 3 is oil or water. In this embodiment, the liquid medium is oil.

[0023] Installation method of pressure gauge 4: a through hole is provided on the outer wall of sleeve 1, and the detection head of pressure gauge 4 extends into the annular elastic deformation zone 3 through the through hole. Since the wall thickness of sleeve 1 is small, in order to install pressure gauge 4 more firmly, in other embodiments of the utility model, a boss 101 is provided on the outer wall of sleeve 1, and boss 101 extends toward the outside of sleeve 1, and the axis of boss 101 is perpendicular to the axis of sleeve 1, and a mounting hole 102 connected with annular elastic deformation zone 3 is provided on boss 101, and the detection head of pressure gauge 4 extends into annular elastic deformation zone 3 through the mounting hole 102, and the detection head of pressure gauge 4 does not contact the outer wall of elastic tube 2.

[0024] In this embodiment, the connecting tubes 5 at both ends of the sleeve 1 are fixedly connected, and the end face of the sleeve 1 is pressed against the end face of the connecting tube 5. Specifically, the edge of the connecting tube 5 away from its axis forms a square; the two connecting tubes 5 are fixedly connected by four fixing bolts 502, and connecting holes are provided at four corners of the connecting tube 5. The connecting holes on the connecting tubes 5 at both ends of the sleeve 1 correspond to each other one by one. The fixing bolts 502 pass through the two connecting holes on the same axis and are locked by the fixing nuts 503, so that the end face of the sleeve 1 is pressed against the end face of the connecting tube 5, thereby realizing the connection between the sleeve 1 and the connecting tube 5.

[0025] When the slurry flows through the grouting channel 202, it will cause the elastic tube 2 to deform, thereby affecting the pressure of the annular elastic deformation zone 3. The pressure gauge 4 obtains the pressure of the slurry by detecting the pressure of the liquid medium in the annular elastic deformation zone 3, avoiding blockage caused by direct contact between the pressure gauge 4 and the slurry, thereby increasing the service life of the pressure gauge 4.

[0026] The above is a basic implementation method of the utility model, which can be further improved, optimized and limited on the basis of the above to obtain the following embodiments:

[0027] Example 2

[0028] This embodiment is an improved capsule-type pressure measuring grouting short section based on Embodiment 1, and its main structure is the same as that of Embodiment 1, with the improvement being that an annular convex ring 501 extending toward the inside of the sleeve 1 is provided at one end of the connecting tube 5 close to the sleeve 1, the annular convex ring 501 is integrally connected to the connecting tube 5, the inner diameter of the annular convex ring 501 is equal to the inner diameter of the elastic tube 2, the outer diameter of the annular convex ring 501 is equal to the inner diameter of the sleeve 1, the annular convex ring 501 is in abutment with the end of the elastic tube 2, that is, the elastic tube 2 is restricted between the two annular convex rings 501, and when the slurry passes through the grouting channel 202, the elastic tube 2 is prevented from moving along the slurry flow direction, thereby ensuring the sealing of the annular elastic deformation space.

[0029] Example 3

[0030] A grouting pipe comprises a plurality of grouting pipe sections 6 and a plurality of grouting short sections coaxially arranged with the grouting pipe sections 6, wherein the grouting short sections are capsule-type pressure-measuring grouting short sections described in Example 2. Figure 1 As shown, in this embodiment, the number of grouting pipe sections 6 is 2, the number of grouting short sections is 1, and both ends of the grouting short section are connected to the two grouting pipe sections 6 respectively.

[0031] Example 4

[0032] A grouting pipe comprises a plurality of grouting pipe sections 6 and a plurality of grouting short sections coaxially arranged with the grouting pipe sections 6, wherein the grouting short sections are capsule-type pressure-measuring grouting short sections described in Example 2. Figure 2As shown, the number of grouting pipe sections 6 is 2, the number of grouting short sections is 2, and the two grouting short sections are located between the two grouting pipe sections 6. In this embodiment, an annular convex ring 501 is provided at both ends of the connecting pipe 5, and there is a connecting pipe 5 between the two sleeves 1, that is, the annular convex rings 501 at both ends of the connecting pipe 5 between the two sleeves 1 extend into the corresponding sleeves 1 respectively, and contact with the elastic tube 2 in the corresponding sleeve 1 to limit the movement of the elastic tube 2. That is, two pressure gauges 4 are provided on the grouting pipe to reduce the detection error.

[0033] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A capsule type pressure measuring grouting short joint, characterized in that: The invention comprises a sleeve (1) whose two ends are connected to a grouting pipe section (6); an elastic sleeve (2) is coaxially arranged inside the sleeve (1); a closed annular elastic deformation zone (3) is formed between the elastic sleeve (2) and the inner wall of the sleeve (1); a grouting channel (202) connected to the grouting pipe section (6) is provided at the center of the elastic sleeve (2); the annular elastic deformation zone (3) is filled with a liquid medium; and a detection head of a pressure gauge (4) passes through the sleeve (1) and extends into the annular elastic deformation zone (3).

2. A capsule type pressure measuring grouting short joint as claimed in claim 1, characterized in that: The two ends of the elastic tube (2) are bent toward the inner wall of the sleeve (1) to form an annular bent portion (201), and the edge of the annular bent portion (201) is sealed to the inner wall of the sleeve (1), so that a closed annular elastic deformation zone (3) is formed between the annular bent portion (201), the elastic tube (2) and the inner wall of the sleeve (1).

3. A capsule type pressure measuring grouting nipple as claimed in claim 1, characterized in that: The outer wall of the sleeve (1) is provided with a through hole, and the detection head of the pressure gauge (4) extends through the through hole into the annular elastic deformation zone (3).

4. The capsule type pressure measuring grouting short joint according to claim 1, characterized in that: A boss (101) is provided on the outer wall of the sleeve (1), the axis of the boss (101) is perpendicular to the axis of the sleeve (1), a mounting hole (102) connected to the annular elastic deformation zone (3) is provided on the boss (101), and a detection head of the pressure gauge (4) passes through the mounting hole (102) and extends into the annular elastic deformation zone (3).

5. The capsule type pressure measuring grouting short joint according to claim 1, characterized in that: The sleeve (1) is connected to the grouting pipe section (6) via a connecting pipe (5); one end of the connecting pipe (5) is fixedly connected to the sleeve (1), and the other end of the connecting pipe (5) is fixedly connected to the grouting pipe section (6).

6. A capsule type pressure measuring grouting nipple as claimed in claim 5, characterized in that: The inner wall of the connecting pipe (5) is provided with an internal thread, and the outer wall of the grouting pipe section (6) is provided with an external thread matching the internal thread.

7. A capsule type pressure measuring grouting short joint as claimed in claim 5, characterized in that: The connecting pipes (5) at both ends of the sleeve (1) are fixedly connected, and the end surface of the sleeve (1) is pressed tightly against the end surface of the connecting pipe (5).

8. The capsule type pressure measuring grouting nipple as claimed in claim 5, characterized in that: An end of the connecting tube (5) close to the sleeve (1) is provided with an annular protruding ring (501) extending toward the inside of the sleeve (1), and the annular protruding ring (501) is in abutting contact with the end of the elastic tube (2).

9. A capsule type pressure measuring grouting short joint as claimed in claim 1, characterized in that: The liquid medium is oil or water.

10. A grouting pipe, comprising a plurality of grouting pipe sections (6) and a plurality of grouting short sections coaxially arranged with the grouting pipe sections (6), characterized in that: The grouting nipple is a capsule-type pressure-measuring grouting nipple as described in any one of claims 1 to 9.

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