Cement stability testing device

Abstract

The utility model discloses a cement stability testing device which comprises a box body, a net grate is arranged in the box body and close to the bottom, the net grate is connected with the bottom of the box body through a rod, a heating pipe is arranged between the net grate and the bottom in the box body, the surface, away from the bottom of the box body, of the net grate is connected with a clamping frame, and laser scanners are installed on the top and the side wall of the box body. The scanning end of the laser scanner extends into the box body, a cooling mechanism is arranged outside the box body, and the cooling mechanism is communicated with the box body through a pipeline, so that the problems that in the prior art, errors exist in the process that a cement test piece is taken out of the box body and then is tested by using a Reynolds clamp, and the cooling time of water in the box body is too long are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of cement stability testing devices, in particular to a cement stability testing device. Background Art

[0002] Cement stability is one of the important indicators of cement quality. Cement stability can reflect the uniformity of cement volume change during the setting and hardening process. When testing cement stability (standard method), it is necessary to first use a boiling box to boil the Redger clamp specimen, and then use a Redger clamp expansion meter to test the boiled specimen.

[0003] At present, the existing cement stability test device includes two devices, namely a boiling box and a Leclerc clamp expansion measuring device. First, place the Leclerc clamp specimen in the boiling box on a frame, add an appropriate amount of water, start the heating system, heat the water to a boiling state, keep it for a certain period of time until the boiling ends, immediately drain the water in the boiling box, and take out the specimen for testing after the box cools down; a Leclerc clamp expansion measuring instrument is required to test the specimen, and the test time interval is relatively large. At the same time, it takes a long time to cool down the hot water in the box, which is a waste of time and not efficient enough.

[0004] Based on this, the utility model designs a cement stability testing device to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a cement stability testing device, which solves the problems in the prior art of errors in the process of testing with Redfield clamps after taking cement test pieces out of a box and the long time required for cooling water in the box.

[0006] The technical solution adopted by the utility model is a cement stability testing device, comprising a box body, a mesh grate is arranged near the bottom of the box body, the mesh grate is connected to the bottom of the box body by a rod, a heating pipe is arranged between the mesh grate and the bottom of the box body, a clamp is connected to the surface of the mesh grate away from the bottom of the box body, a laser scanner is installed on the top and side walls of the box body, the scanning end of the laser scanner extends to the inside of the box body, a cooling mechanism is arranged outside the box body, and the cooling mechanism is connected to the box body through a pipeline.

[0007] The utility model is characterized in that:

[0008] The clamping frame includes four vertical poles, one ends of the four vertical poles are vertically connected to the surface of the mesh, and the other ends of the four vertical poles are connected with cross bars. The cross bars and the vertical poles enclose a rectangular space. The side walls of the four vertical poles are connected by cross bars located in the same horizontal plane. One group of cross bars located in opposite positions in the rectangular space are connected by limit rods. The number of limit rods is not less than four. Several connecting rods are connected between every two limit rods. An arc rod is connected between every two connecting rods. An arc placement groove is formed between the limit rods, the connecting rods and the arc rods.

[0009] A junction box is provided outside the box body, the junction box is electrically connected to the heating tube, and the junction box is connected to the control cabinet through a signal line.

[0010] A temperature sensor is arranged on the inner wall of the box, and the temperature sensor is electrically connected to the control cabinet.

[0011] A water inlet hole and a water outlet hole are opened on the side wall of the box body close to the cooling mechanism, and a drainage pipe is arranged on the side wall of the box body; and a box cover is connected to the top of the box body through a hinge.

[0012] The cooling mechanism includes a tubular heat exchanger, the water inlet and the water outlet of the tubular heat exchanger are connected through a first conversion pipe, a control valve is arranged on the first conversion pipe, the water outlet of the tubular heat exchanger is connected with the water inlet of the first water pump through a second conversion pipe, the water outlet of the first water pump is connected with the water inlet through a third conversion pipe; the cooling water outlet of the tubular heat exchanger is connected with the water inlet of the water storage tank through a fourth conversion pipe, the water outlet of the water storage tank is connected with the water inlet of the second water pump through a fifth conversion pipe, and the water outlet of the second water pump is connected with the cooling water inlet of the tubular heat exchanger through a sixth conversion pipe.

[0013] The beneficial effects of the utility model are:

[0014] 1. The utility model places the cement specimen in a Leclerc clamp, and the Leclerc clamp is placed in a clamp frame. The placement groove in the clamp frame is arc-shaped, and the cement specimen fits the bottom of the placement groove, which increases the boiling stability of the cement specimen during the test; multiple groups of placement grooves are provided, and multiple groups of experiments can be carried out. A laser scanner is also provided, which can directly calculate and read the measurement structure, and there is no need to take out the Leclerc clamp stability test device for measurement. By integrating the box body and the cooling mechanism into a stability test device, it is more efficient and convenient to use.

[0015] 2. When the utility model is in use, through the cooling mechanism, the hot water is pumped out of the box through the water outlet of the box connected by the pipeline under the action of the first water pump, and the hot water in the circulation pipeline is heat exchanged through the tubular heat exchanger to quickly reduce the water temperature, and then it is re-delivered to the box through the water inlet hole of the box for cooling, thereby realizing the circulation of water. The cooling water in the water storage tank can be sucked out and transported to the tubular heat exchanger through the second water pump, and then returned to the water storage tank through the pipeline to realize the circulation of cooling water. Multiple cycles can speed up the cooling of the hot water in the box and shorten the time required for cooling. At the same time, the temperature in the box can be monitored in real time through the temperature sensor, which is convenient for controlling the boiling temperature and ensuring that it is completely reduced to room temperature, thereby ensuring the accuracy of experimental tests. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a cross-sectional structural schematic diagram of a cement stability testing device of the utility model;

[0017] Figure 2 It is a front view of the cement stability testing device of the utility model;

[0018] Figure 3 It is a rear view of the cement stability testing device of the utility model;

[0019] Figure 4 A top view of a cement stability testing device according to the utility model;

[0020] Figure 5 It is a front view of the clamping frame in the cement stability testing device of the utility model;

[0021] Figure 6 It is a left view of the clamping frame in the cement stability testing device of the utility model;

[0022] Figure 7 The figure is a schematic diagram of the cooling mechanism structure in the cement stability testing device of the utility model.

[0023] In the figure: 1. box body, 101. water inlet hole, 102. water outlet hole, 103. hinge, 2. laser scanner, 3. first conversion tube, 4. heating tube, 5. junction box, 6. mesh, 7. clamp frame, 701. vertical pole, 702. horizontal rod, 703. limit rod, 704. arc rod, 705. connecting rod, 8. temperature sensor, 9. control cabinet, 10. box cover, 11. cooling mechanism, 1101. tubular heat exchanger, 1102. first water pump, 1103. second water pump, 1104. water storage tank, 12. sixth conversion tube, 13. drain pipe, 14. control valve, 15. second conversion tube, 16. third conversion tube, 17. fourth conversion tube, 18. fifth conversion tube. DETAILED DESCRIPTION

[0024] The utility model is further explained below in conjunction with the accompanying drawings and specific implementation methods.

[0025] The utility model cement stability testing device is as follows Figure 1 and Figure 2 As shown, it includes a box body 1, a mesh grate 6 is provided near the bottom of the box body 1, the mesh grate 6 is connected to the bottom of the box body 1 through a rod, a heating tube 4 is provided between the mesh grate 6 and the bottom of the box body 1, and a clamp 7 is connected to the surface of the mesh grate 6 away from the bottom of the box body 1. A laser scanner 2 is installed on the top and side walls of the box body 1, and the scanning end of the laser scanner 2 extends to the inside of the box body 1. A cooling mechanism 11 is provided outside the box body 1, and the cooling mechanism 11 is connected to the box body 1 through a pipeline.

[0026] like Figure 5 and Figure 6 As shown, the clamping frame 7 includes four vertical rods 701, one ends of the four vertical rods 701 are vertically connected to the surface of the mesh 6, and the other ends of the four vertical rods 701 are connected with cross bars 702. The cross bars 702 and the vertical rods 701 enclose a rectangular space. The side walls of the four vertical rods 701 are connected by cross bars 702 located in the same horizontal plane, and one group of the cross bars 702 located in opposite positions in the rectangular space are connected by limit rods 703. The number of limit rods 703 is not less than four, and a number of connecting rods 705 are connected between every two limit rods 703. An arc rod 704 is connected between every two connecting rods 705, and an arc placement groove is formed between the limit rods 703, the connecting rods 705 and the arc rods 704.

[0027] like Figure 3 As shown, a junction box 5 is provided outside the box body 1, the junction box 5 is electrically connected to the heating tube 4, and the junction box 5 is connected to the control cabinet 9 through a signal line.

[0028] A temperature sensor 8 is provided on the inner wall of the box body 1 , and the temperature sensor 8 is electrically connected to the control cabinet 9 .

[0029] like Figure 4 and Figure 7As shown, a water inlet 101 and a water outlet 102 are provided on the side wall of the box body 1 near the cooling mechanism 11, and a drain pipe 13 is provided on the side wall of the box body 1; a box cover 10 is connected to the top of the box body 1 through a hinge 103; the cooling mechanism 11 includes a tubular heat exchanger 1101, the water inlet of the tubular heat exchanger 1101 is connected to the water outlet 102 through a first conversion pipe 3, a control valve 14 is provided on the first conversion pipe 3, and the water outlet of the tubular heat exchanger 1101 is connected to the water outlet 102 through a second conversion pipe 15. There is a water inlet of the first water pump 1102, and the water outlet of the first water pump 1102 is connected to the water inlet hole 101 through the third conversion pipe 16; the cooling water outlet of the tubular heat exchanger 1101 is connected to the water inlet of the water tank 1104 through the fourth conversion pipe 17, and the water outlet of the water tank 1104 is connected to the water inlet of the second water pump 1103 through the fifth conversion pipe 18, and the water outlet of the second water pump 1103 is connected to the cooling water inlet of the tubular heat exchanger 1101 through the sixth conversion pipe 12.

[0030] The cooling mechanism provided in the utility model, when working, opens the control valve 14, under the action of the first water pump 1102, the water outlet 102 connected to the tubular heat exchanger 1101 pumps the water in the box 1 into the tubular heat exchanger 1101 under the action of the first water pump 1102, and the water performs a cold-heat exchange in the tubular heat exchanger 1101. After the exchange, the hot water pumped out from the box 1 is converted into cooling water, and the cooling water flows in two parts. One part of the water flows through the first water pump 1102 through the second conversion tube 15 and then through the third conversion tube 15 connected to the water inlet 101 under the action of the first water pump 1102. 6 returns to the box body 1; the other part of the water flows into the water storage tank 1104 through the fourth conversion pipe 17 under the action of the second water pump 1103 to continue cooling, and then under the action of the second water pump 1103, it flows through the fifth conversion pipe 18 through the second water pump 1103 and then enters the tubular heat exchanger 1101 through the sixth conversion pipe 12, and then passes through the first water pump 1102 again and returns to the box body 1 through the third conversion pipe 16, realizing the function of quickly cooling the temperature in the box body 1; and then by observing the temperature value displayed on the control cabinet 9, it is convenient to control the boiling temperature and ensure that it is completely reduced to room temperature, thereby ensuring the accuracy of the experimental test.

[0031] The working principle of the utility model is as follows: open the box cover 10, inject a proper amount of water into the box body 1, install the cement test piece in the Lei's clamp, then put the Lei's clamp into the arc-shaped placement groove formed between the limit rod 703, the connecting rod 705 and the arc rod 704, and the bottom of the Lei's clamp fits with the bottom of the placement groove. At this time, the water in the box body 1 completely immerses the cement test piece, cover the box cover 10, turn on the switch and laser scanner 2 controlling the heating tube 4 in the control cabinet 9, heat the water in the box 1 and scan and record the original opening distance of the Lei's clamp; heat until the water boils and keep it warm for 180 minutes. A temperature sensor 8 is provided in the box 1, and the insulation and heating process can be controlled by the control cabinet 9 The water temperature in the box 1 is monitored in real time; after the heat preservation is finished, the heating tube 4 is turned off, the control valve 14 is opened, and the first water pump 1102 in the cooling mechanism 11 is started to suck the hot water in the box 1 into the tubular heat exchanger 1101. After cooling in the tubular heat exchanger 1101, part of the cooled water is directly returned to the box 1 through the third conversion tube 16, and the other part is returned to the box 1 through the third conversion tube 16 after cooling again. The cooling mechanism 11 and the box 1 are repeatedly circulated with water until the temperature in the box 1 reaches the room temperature, and the laser scanner 2 is turned on to scan and measure the opening distance of the Lei clamp again to obtain the value after expansion. During the whole test process, the measurement by the laser scanner 2 simplifies the operation steps, and the laser scanner 2 is set at two positions, and the data measured by the laser scanner 2 can be compared and corrected to reduce errors; the cooling mechanism 11 can use water circulation to cool down, the cooling speed is relatively fast, and the water cooling is gentle, and the surface or interior of the cement specimen is not damaged.

[0032] Laser scanners 2 are provided on the box cover 10 and the side wall of the box body 1 to scan the opening of the Ray clamp from different angles to obtain multiple sets of data, which are averaged and the final value is calculated using the 0.5 unit rounding method.

[0033] Example 1

[0034] The utility model discloses a testing device for cement stability, comprising a box body 1, wherein a mesh grate 6 is arranged near the bottom of the box body 1, the mesh grate 6 is connected to the bottom of the box body 1 through a rod, a heating pipe 4 is arranged between the mesh grate 6 and the bottom of the box body 1, a clamping frame 7 is connected to the surface of the mesh grate 6 away from the bottom of the box body 1, a laser scanner 2 is installed on the top and side walls of the box body 1, a scanning end of the laser scanner 2 extends to the inside of the box body 1, a cooling mechanism 11 is arranged outside the box body 1, and the cooling mechanism 11 is connected to the box body 1 through a pipeline.

[0035] Example 2

[0036] The utility model discloses a testing device for cement stability, comprising a box body 1, wherein a mesh grate 6 is arranged near the bottom of the box body 1, the mesh grate 6 is connected to the bottom of the box body 1 through a rod, a heating pipe 4 is arranged between the mesh grate 6 and the bottom of the box body 1, a clamping frame 7 is connected to the surface of the mesh grate 6 away from the bottom of the box body 1, a laser scanner 2 is installed on the top and side walls of the box body 1, a scanning end of the laser scanner 2 extends to the inside of the box body 1, a cooling mechanism 11 is arranged outside the box body 1, and the cooling mechanism 11 is connected to the box body 1 through a pipeline.

[0037] The clamping frame 7 includes four vertical rods 701, one ends of the four vertical rods 701 are vertically connected to the surface of the mesh 6, and the other ends of the four vertical rods 701 are connected with cross rods 702. The cross rods 702 and the vertical rods 701 enclose a rectangular space. The side walls of the four vertical rods 701 are connected by cross rods 702 located in the same horizontal plane, and one group of the cross rods 702 located in opposite positions in the rectangular space are connected by limit rods 703. The number of limit rods 703 is not less than four, and a number of connecting rods 705 are connected between every two limit rods 703, and an arc rod 704 is connected between every two connecting rods 705. An arc placement groove is formed between the limit rods 703, the connecting rods 705 and the arc rods 704.

[0038] Example 3

[0039] The utility model discloses a testing device for cement stability, comprising a box body 1, wherein a mesh grate 6 is arranged near the bottom of the box body 1, the mesh grate 6 is connected to the bottom of the box body 1 through a rod, a heating pipe 4 is arranged between the mesh grate 6 and the bottom of the box body 1, a clamping frame 7 is connected to the surface of the mesh grate 6 away from the bottom of the box body 1, a laser scanner 2 is installed on the top and side walls of the box body 1, a scanning end of the laser scanner 2 extends to the inside of the box body 1, a cooling mechanism 11 is arranged outside the box body 1, and the cooling mechanism 11 is connected to the box body 1 through a pipeline.

[0040] The side wall of the box body 1 near the cooling mechanism 11 is provided with a water inlet 101 and a water outlet 102, and the side wall of the box body 1 is provided with a drain pipe 13; the top of the box body 1 is connected to the box cover 10 through a hinge 103; the cooling mechanism 11 includes a tubular heat exchanger 1101, the water inlet of the tubular heat exchanger 1101 is connected to the water outlet 102 through a first conversion pipe 3, the first conversion pipe 3 is provided with a control valve 14, and the water outlet of the tubular heat exchanger 1101 is connected to the water outlet 102 through a second conversion pipe 15. There is a water inlet of a first water pump 1102, and the water outlet of the first water pump 1102 is connected to the water inlet 101 through a third conversion pipe 16; the cooling water outlet of the tubular heat exchanger 1101 is connected to the water inlet of a water storage tank 1104 through a fourth conversion pipe 17, and the water outlet of the water storage tank 1104 is connected to the water inlet of a second water pump 1103 through a fifth conversion pipe 18, and the water outlet of the second water pump 1103 is connected to the cooling water inlet of the tubular heat exchanger 1101 through a sixth conversion pipe 12.

Claims

1. A cement stability testing device, comprising a housing (1), characterized in that: A mesh grate (6) is provided near the bottom of the box (1), the mesh grate (6) is connected to the bottom of the box (1) via a rod, a heating tube (4) is provided between the mesh grate (6) and the bottom of the box (1), a clamping frame (7) is connected to the surface of the mesh grate (6) away from the bottom of the box (1), a laser scanner (2) is installed on the top and side walls of the box (1), a scanning end of the laser scanner (2) extends into the inside of the box (1), a cooling mechanism (11) is provided outside the box (1), and the cooling mechanism (11) is connected to the box (1) via a pipeline.

2. The cement stability testing device according to claim 1, characterized in that: The clamping frame (7) comprises four vertical rods (701), one end of each of the four vertical rods (701) is vertically connected to the surface of the grate (6), and the other ends of each of the four vertical rods (701) are connected with a cross bar (702). The cross bar (702) and the vertical rods (701) enclose a rectangular space. The side walls of the four vertical rods (701) are connected by a cross bar (702) located in the same horizontal plane, and one group of the cross bars (702) located in opposite positions in the rectangular space is connected by a limiting rod (703). The number of the limiting rods (703) is not less than four, and a plurality of connecting rods (705) are connected between every two of the limiting rods (703), and an arc rod (704) is connected between every two of the connecting rods (705). An arc placement groove is formed between the limiting rod (703), the connecting rod (705) and the arc rod (704).

3. The cement stability testing device according to claim 1, characterized in that: A junction box (5) is provided outside the box body (1); the junction box (5) is electrically connected to the heating tube (4); and the junction box (5) is connected to a control cabinet (9) via a signal line.

4. The cement stability testing device according to claim 3, characterized in that: A temperature sensor (8) is provided on the inner wall of the box body (1), and the temperature sensor (8) is electrically connected to the control cabinet (9).

5. The cement stability testing device according to claim 1, characterized in that: A water inlet hole (101) and a water outlet hole (102) are provided on the side wall of the box body (1) close to the cooling mechanism (11), and a drainage pipe (13) is provided on the side wall of the box body (1); and a box cover (10) is connected to the top of the box body (1) via a hinge (103).

6. The cement stability testing device according to claim 5, characterized in that: The cooling mechanism (11) comprises a tubular heat exchanger (1101), a water inlet of the tubular heat exchanger (1101) being connected to a water outlet (102) via a first conversion pipe (3), a control valve (14) being provided on the first conversion pipe (3), a water outlet of the tubular heat exchanger (1101) being connected to a water inlet of a first water pump (1102) via a second conversion pipe (15), and a water outlet of the first water pump (1102) being connected to the water inlet (102). 01) is connected via a third conversion pipe (16); the cooling water outlet of the tubular heat exchanger (1101) is connected via a fourth conversion pipe (17) to a water inlet of a water storage tank (1104); the water outlet of the water storage tank (1104) is connected via a fifth conversion pipe (18) to a water inlet of a second water pump (1103); the water outlet of the second water pump (1103) is connected via a sixth conversion pipe (12) to a cooling water inlet of the tubular heat exchanger (1101).

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